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• Configure linux machine as bridge/switch and end device

  - by leemes

  At my home, I have two desktop PCs in two rooms. The router / DSL modem is in one of these rooms. Now I want to configure a home server (having 2 LAN ports, running 24/7) in the corridor between the two rooms, using only one LAN cable at each door. This gives me the following physical configuration: (door) (door) .----/-/----. .-----/-/----------._ FritzBox | | | .----´´ DSL Router PC1 Server | PC2 As just said, the server has 2 network interfaces and is running Ubuntu. What I need now is a network configuration which enables both the server and PC1 to connect to the router. I think the server needs to serve as a bridge or switch. Currently, all computers are configured having static IP addresses. If I'm understanding it correctly, a bridge / switch doesn't have its own IP address, but as the server needs to be configured as an own end device, it needs to have one. My first question is, do I have to configure both interfaces separately, giving both the same static IP address? My next question is, how do I bridge the two physical networks into one? I have basic understanding (but am always confused again and again) of bridges and switches, but I don't know how to configure it in software. I only know that it's possible to do so :) The third question is: Is it possible to configure this in a way that network packets from/to PC1 to/from the router only go through hardware or only consume low CPU in the server? Can you help me? Thanks in advance!

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• Does Guest WiFi on an Access Point make any sense? [migrated]

  - by Jason

  I have a Belkin WiFi Router which offers a feature of a secondary Guest Access WiFi network. Of course, the idea is that the Guest network doesn't have access to the computers/devices on the main network. I also have a Comcast-issues Cable Modem/Router device with mutliple wired ports, but no WiFi-capabilities. I prefer to only run one router/DHCP/NAT instead of both the Comcast Router and the Belkin Router, so I can disable the Routing functions of the Belkin and allow the Comcast Router to But if I disable the Routing functions of the Belkin device, the Guest WiFi network is still available. Is this configuration just as secure as when the Belkin acts as a Router? I guess the question comes down to this: Do Guest WiFi's provide security by 1) only allowing requests to IPs found in-front of the device, or do they work by 2) disallowing requests to IPs on the same subnet? 1) Would mean that Guest WiFi on an access point provides no benefit 2) Would mean that the Guest WiFi functionality can work even if the device is just an access point. Or maybe something else entirely?

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• How can I make a copy of a printer in Win7?

  - by hawbsl

  Has anyone been able to copy an existing printer in Win7? I know that we were able to do this in XP (not as a direct copy/paste, but by installing the printer twice) but in Win7 it doesn't seem to be possible. Googling the answer is hopeless because searching for "copy printer" or "duplicate printer" you get a bunch of posts about "printer copiers" or people complaining about duplicate printers getting created in the background (precisely what I'd like to be able to do) It'd be good to know how to do it in general, but if it depends on the printer type, then in our case we are trying to make a copy of an HP Laserjet. Tried installing from the CD - but the CD is too old for Win7 Tried installing via Add Printer and that seems to install the printer but it's marked with an error. Tried installing via the .exe installer from the HP site and that does result in a successful printer being installed, but it won't let you install the same printer twice (stalls on the "insert USB cable now" step - simply won't enable the greyed out "Next" button). The reason this is required is so that we can print to one to the feeder and to the tray separately.

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• Port mirroring on multiple switches

  - by Matt

  So here is the deal, I have a server on switch A where port 3 is monitoring traffic for most of the ports on switch A. However I have other users on switch B that needs to have port 3 on switch A monitor as well. Is this possible? I have been reading about rspan but doesnt seem to work. Switch A: monitor session 1 source interface fast0/1 - 2 monitor session 1 source interface fast0/4 - 46 monitor session 1 destination interface fast0/3 (this works great for switch A, I need a solution to get switch B to also have some ports sent to port 3 on switch A for monitoring.) Onxx, All the traffic on switch A is fine, there will be about 10-15 ports on switch B that I need to send to fa0/3 on switch A as the destination. I have the switches connected with a ethernet cable with a trunk port on both switches on port 48 on switch B and A and port 47 on A connects to our sonicwall. So I am assuming they are daisy chained? What if I did the following: Switch A monitor session 1 source interface fast0/1 - 2 monitor session 1 source interface fast0/4 - 46 monitor session 1 destination interface fast0/3 Put all of the ports on vlan 10 because I made an rspan vlan 10 On switch B monitor the ports I need will say 1-10 monitor session 1 source interface fast0/1 - 10 monitor session 1 destination remote vlan 10 as a prerequisite I would have created vlan 10 as a rspan vlan on switch B. Switch A Monitor session 1 destination remote vlan 10 Would this work? By the way I am working with cisco catalyst 3560 switches.

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• Computer won't start up. Stuck on Lenovo splash screen. Help Diagnose

  - by Ace Legend

  I have some (I'm not sure exactly what model) Lenovo 21" IdeaCentre. Honestly, the computer works off and on. I have had problems with it not being able to shutdown, which I fixed. The fan seems to be constantly running, a few other problems as well. Anyway, nobody was using it when all of a sudden it switched to a blue screen. I was in the kitchen, but when I got over to the computer I read the message. It said something about bad drivers, but that is all I saw and then it restarted. However, when it got to the Lenovo Splash screen, nothing happened. I waited there for over 10 minutes, but still nothing. I tried to turn of the computer, but the only way to do it was to pull out the power cable. I then removed all USB devices and tried again. Still nothing. It also won't respond to keyboard input when I try to use enter to interrupt normal startup. My guess is some piece of hardware is damaged inside the machine. However, I have no idea what piece it is. Does anybody have any idea what could be wrong with it? Thanks.

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• Screen randomly goes blue/black/white

  - by FubsyGamer

  Problem Randomly, while using my computer, the monitor goes dark grey/almost black, or it goes white with faint grey vertical lines, or it goes blue with black vertical lines. It's as if the computer powers off. People tell me I sign out of Skype, Spotify stops playing when it happens, etc. When I look at the tower, it doesn't seem like it's off at all. Nothing changes, fans are spinning, lights are on, etc. If you were only looking at the tower, you'd never know there was a problem The only way I can get it to come back up is to push and hold the power button and turn it off, then back on This never happens while I'm playing video games. I've done 5-6 hour sessions of League of Legends, and it doesn't do anything When I'm just browsing the web, reading email, checking Reddit, etc, it happens all the time. It can happen multiple times in a session, it usually takes only about 5 minutes from the time I start browsing to when the computer crashes This started happening after I moved to a new apartment (this has to be relevant somehow, it was not happening where I lived before) There is nothing in the crash logs or event logs System Specs i5 2500k CPU AMD Radeon 6800 GPU Gigabyte z68a-d3h-b3 motherboard WD VelociRaptor 1 TB HDD Screenshots Device manager About screen Things I have tried I was getting a WMI Error in my event logs, but I fixed it using Microsoft's fix, KB 2545227 I was using Windows 8. I wiped the HDD and downgraded to Windows 7 64 bit I took out the video card and used a can of air to totally clean out the video card, all fans, and the inside of the computer in general. I made sure all of the video card pins were fine, then reconnected it I tried to update my motherboard BIOS, but anything I downloaded from Gigabyte was only for 32 bit machines, not 64. I don't even know how to tell what my motherboard BIOS is at right now I am using a power strip, and anything else connected to it works just fine If I re-seat the monitor cable while this is happening, nothing changes Please, help me. I've been battling this for several weeks now, and it's so frustrating it makes me not even want to use the computer.

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• HD working with IDE USB adapter but not recognised by bios

  - by Rajeeva

  I have a Windows XP Pentium III desktop with two hard drives. The first one has the OS and is luckily working. The second drive on the secondary master IDE channel few days back was unable to read some files and since then for some time it was failing and reviving intermittently and now it is always showing as failed on the IDE channel When the HD was intermittenly failing, I was able to copy some data from it to the other drive - also during that time if the system was running and the hard disk failed at that time, the system froze and then i had to reboot. then I got a new 80 gb hdd similar (same make - seagate barracuda) to the earlier failing one, a new data cable for the drive and an IDE to USB adapter. the new hard drive i installed in the previous drive's place (secondary master), formatted it and it worked for 1 day and then it also failed - simultaneously i connected the old hd to the IDE/USB adapter and i could view all the data - some of that data i was able to back up from the old hd to the new hd before the new hd failed the new hd i have tried connecting on the primary channel as the slave disk but when i do that then the bios does not detect either the OS drive or the new drive and the system does not boot surprisingly, the older (previously failed) hd and the new hd are both working fine on the usb channel with the IDE/USB adapter. i have ruled out any problem with the secondary channel since the dvd rom i was earlier using as primary slave have now connected to secondary master and it works fine. i am really confused by this behavior on my system. please can anybody try to solve this for me. thanks.

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• Motorola Surfboard SB6121 modem conected to 2WIREi38HG wireless router but there's no internet access

  - by Jessica

  I have just switched to Comcast cable internet from AT&T Uverse and I was hoping to use the 2WIRE wireless router with the new Surfboard modem so I can have wireless access. I messed around with some settings and got it working for my laptop (I'm not terribly well versed in computer stuff; I think it was mostly luck) for about a week. The other day I tried to get online and there was no internet connection. I restarted the equipment with no success and then plugged the modem directly into the laptop. This worked, so I knew there was no outage. I connected the ethernet cord to the router and a second cord to my laptop and that worked, too. But when I tried again just with the wireless the laptop connects to the router, but doesn't recognize it or find an internet connection. I tried to go to http://gateway.2Wire.net to fiddle with the settings, but all I get is a Server Not Found page. I tried to check the ip address but this is really kind of over my head and I get different things checking it while plugged into only the modem vs when I plug into the router. Can anyone help? The frustrating thing is that I had it working for awhile, so I know it can do it!

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• Strange File-Server I/O Spikes - What Is Causing This?

  - by CruftRemover

  I am currently having a problem with a small Linux server that is providing file-sharing services to four Windows 7 32-bit clients. The server is an AMD PhenomX3 with two Western Digital 10EADS (1TB) drives, attached to a Gigabyte GA-MA770T-UD3 mainboard and running Ubuntu Server 10.04.1 LTS. The client machines are taking an extremely long time to access/transfer data on the file server. Applications often become non-responsive while trying to open files located remotely, or one program attempting to open a file but having to wait will prevent other software from accessing network resources at all. Other examples include one image taking 20 seconds or more to open, and in one instance a user waited 110 seconds for Microsoft Word 2007 to save a document. I had initially thought the problem was network-related, but this appears not to be the case. All cables and switches have been tested (one cable was replaced) for verification. This was additionally confirmed when closing down all client machines and rebooting the server resulted in the hard-drive light staying on solid during the startup process. For the first 15 minutes during boot, logon and after logging on (with no client machines attached), the system displayed a load average of 4 or higher. Symptoms included waiting several minutes for the logon prompt to appear, and then several minutes for the password prompt to appear after typing in a user name. After logon, it also took upwards of 45 seconds for the 'smartctl' man page to appear after the command 'man smartctl' was issued. After 15 minutes of this behaviour, the load average dropped to around 0.02 and the machine behaved normally. I have also considered that the problem is hard-drive-related, however diagnostic programs reveal no drive problems. Western Digital DLG, Spinrite and SMARTUDM show no abnormal characteristics - the drives are in perfect health as far as the hardware is concerned. I have thus far been completely unable to track down the cause of this problem, so any help is greatly appreciated. Requested Information: Output of 'free' hxxp://pastebin.com/mfsJS8HS (stupid spam filter) The command 'hdparm -d /dev/sda1' reports: HDIO_GET_DMA failed: Inappropriate ioctl for device (the BIOS is set to AHCI - I probably should have mentioned that).

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• SSD not detected on boot up running windows 7, with installed blank hdd

  - by Matt. G

  I have recently built a PC for a friend, after the original system build, which included a 60GB primary SSD and a secondary 1TB HDD. I kept getting blue screens of death and kernel power errors, after investigation it was revealed that a faulty power cable and insufficient thermal paste provided with the included heat sink was the cause. This resolved the problem but after 3 months I received a phone call saying that the PC was not starting at the point of loading the operating system, with an NTLDR error. I had an idea of the cause, and after the user removed the HDD the computer started up with no issues, then I asked him to power off and reattach the HDD, and this completely resolved the issue; beforehand even restarting would not fix it. He does not have a surge protector and I thought that maybe some registry corruption had occurred due to a power surge, this might be a stupid answer though. Any ideas to what occurred with the machine would be most appreciated. No other issues have been found since the initial fault. The PC uses Windows 7 Home Premium installed on the SSD.

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• What switch should we use for PCoIP?

  - by Jay R.

  We have a small lab space that seats 10 people and has 20 machines. Each machine is set to 1920x1200 resolution because the user apps are best used at that resolution. Currently the machines are all located close enough to montors that a DisplayPort cable will reach, but the pending lab remodel positions them around 80 feet or more away in racks. Our proposed solution is to use PCoIP. We purchased 10 PCoIP portals and 20 PCoIP host cards. We plan to set up a dedicated network to handle just the PCoIP traffic. After testing just one portal and one host card with a cheap 1G switch from a local office supply store, we were left with less than good impressions about the usefulness in our lab. The framerates were not spectacular and the mouse seemed jerky. Our concern is that we can't get away with the cheap 1G stuff from the store because adding more machines to the switch will just make the user experience worse. What switch would be recommended to best support our PCoIP situation? We will need to plug in at least 30 cables based on just those machines. Is there a particular feature to search for that makes a difference? Is there a switch that works best with PCoIP? Added Info: The reporting webapp for the host card shows maximum bandwidth usage to be 220000 kbps. The average appears to be around 180000 kbps. The reverse direction is much lower, like 15000 kbps.

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• What is the solution to enable Dymo Turbo 400 Label Printer to work on Win 7 / 64-bit?

  - by mdpc

  It's Christmas time and time for printing labels for all those Christmas cards. I've upgraded to Windows 7 64-bit from XP. I've been unsuccessfully attempting to get the connected Dymo 400 Turbo label USB printer to work again. The latest manufacturer drivers have been successfully loaded and installed. The drivers are supposed to work on Windows 7/64-bit. The Win 7 system(s) in question are patched and up-to-date on that score. The Windows Update site responds with a driver when the USB cable is connected to this printer. The printer queue seems to be established correctly. What happens is that I submit a job to the printer (either using the DYMO s/w or not), it delays for a period of time, and then I get the message 'printing error'. Can't seem to locate the appropriate error in the new and improved event log. Several combinations of rebooting, re-installation and power cycling components fail to make the printer work. Sometimes during some type of reset it spits out the last thing to be submitted, but that seems intermittent. I have tried different USB cables and different USB (2.X) ports as well. I have run the Windows 7 troubleshooter it tries to fix the problem but alas it doesn't. Interestingly, trying the USB printer (and its associated manufacturer drivers and s/w) on another Windows 7 64-bit system has the identical failures noticed on the original system. I did not find anything on the manufacturers' site concerning this problem. The printer has no hardware problems or issues.

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• WAN Optimization for Small Office/Home Office

  - by TiernanO

  I have been reading up on WAN optimization for the last while, mostly out of interest of speeding up my own internet connections, but also to speed up the office internet connection. At home, I have 2 cable modems plugged into a RouterBoard RB750, which load balances the connections. In the office, we have a single connection into a NetGear router. Most of the WAN Optimization products I have seen, seem to be prohibitively expensive, but also seem to be based on the idea of having multiple branches around the world. What I am looking for, ideally, is as follows: software install: I am "guessing" I need to install it in 2 places: one in the office or house, and one in "the cloud". any connections going to, say, The US (we are in Europe, but our backup's live in the US currently, which would be something important to speed up) would be "tunnelled" though the Optimizer. If downloading or uploading large files, open multiple connections between both "the cloud" and the optimizer... This is where a lot of speed could be gained. finally, for items not compressed, they would be compressed on the cloud side of things, also items that are already on the optimizer could be not sent again. kind of like RSync or Proxy servers... So, is there something that can be done? Is it available using off the shelf components (some magic script with SSH, Squid, Linux and duct tape) or is it something that needs to be purchased? or even an Open Source Project that does 90% of what i am asking?

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• Can a non-redundant RAID5 cause any serious problems (compared to RAID0)?

  - by leemes

  I used to have a three-disc RAID5 (mdadm) in my computer for personal media storage (music, videos, photos, programs, games, ...). It had three discs with 750 GB each, resulting in an array capacity of 1.5 TB. One day (one year ago), I needed one of those discs to install another operating system. I thought, I don't need the redundancy anymore since I backup the most important stuff (personal photos e.g.) on an external disc anyway. So I decided to remove one of the three discs without converting the RAID to RAID0 or even two separate discs, because I had no temporary storage (since one cannot simply convert the RAID5 to RAID0 AFAIK). So now, for about one year, I have a non-redundant RAID5 with 2 of 3 discs running. Sometimes, one of the discs has a defective contact at the power cable or something similar causing the drive to stop working temporarily (I don't know exactly what it is). Since it still works when rebooting the computer and in most cases by calling some mdadm commands, it wasn't that problematic. Note that the data is not very critical, since I still have a backup of the most important stuff. But in the last few weeks, one of the drives fails very frequently (every few hours), so it gets really annoying to manage this. My questions are: Is there any disadvantage (apart from the annoying management) of a non-redundant RAID5 (with one drive less than typical) over a RAID0? If I understand it correctly, both have no redundancy and the same capacity. On a temporary drive failure, I can restart the array in both cases, assuming that the drive itself still works after the failure. Can it happen that the drive contents alter on a drive failure, making the array inconsistent? If so, can I tell mdadm to check the array for failures (without a file system level checking tool)? Since the drive most probably only has a defective contact causing it to fail for a second only, can I tell mdadm to automatically restart the array, so I will not even notice the failure if no application wanted to access the file system during the failure?

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• ADSL2+ - High sync-rate, good line attenuation, but low noise margin and slow speeds

  - by Mark Pim

  I've been with my ISP (IdNet) for a few months and have been getting some good speeds, but in the last week the speed has dramatically decreased (from 15 Mbps+ to around 0.2 Mbps). This happens at all times of day, not just peak periods. Obviously I've done all I can to isolate problems my end - only one PC is connected to the router (via ethernet cable) and no other background programs are using the network etc. I've raised the issue with the ISP and they've suggested trying a new ADSL filter to see if that is casuing the problem, but I thought it would also be good to get the opinion of superuser on possible causes or other troubleshooting I can do. Here are the juicy stats :) My router (Netgear DGN1000) reports: Downstream Upstream Connection Speed 17602 kbps 1062 kbps Line Attenuation 17.9 db 8.6 db Noise Margin 6.0 db 6.1 db I used RouterStats and it seems to show those figures stay fairly consistent all the time I ran the BT speedtest and it reported: download speed of 164 kbps, out of a max achievable of 21000 kbps upload speed of 859 kbps, out of 1048 kbps DSL connection rate 17719 kbps down and 1048 kbps up IP Profile of 15000 kbps Is there any more troubleshooting I can do? Does this look like a problem with my equipment / wiring or with BT's line? Any advice would be great :)

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• iptables rule on INPUT between 2 ethernet cards on the same host

  - by user1495181

  I have 2 eth cards on the same host. Both connected directly with LAN cable. I set eth0 with ip - 192.168.1.2 I set eth1 with ip - 192.168.1.1 I set this rule: iptables -A INPUT -p tcp -j NFQUEUE --queue-num 0 There are no other rules. (I ran iptables -X,-F) I send TCP syn packet ( with c++ program by using raw socket) from 192.168.1.2 to 192.168.1.1 In wireshark i see that the packet received on eth0, but the iptables rule (above) dosnt apply for this packet. when i sent the packet to remote host and apply this rule on the remote host than it work correct. So, i guess that this is due to the fact that both eth cards exists the same host. . I need to create iptables INPUT rule for local eth card (dest and src on the same machine ). I need it for simplify test. Did i guess the problem correct? is there a way to bypass this? Ps - connected them via switch didn't help. the rule wasn't applied. Run on Ubuntu. TCDUMP show the packet: 10:48:42.365002 IP 192.168.1.2.38550 > 192.168.1.1.34298: Flags [S], seq 0, win 5840, length 0 but logging of iptables like this, has nothing: iptables -A INPUT -p tcp -j LOG --log-prefix '*****************' iptables -A OUTPUT -p tcp -j LOG --log-prefix '#################'

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• How can I monitor network traffic?

  - by WIndy Weather

  I have a home network with about 10 devices including BluRay player [netflix] and both windows and linux machines. I need to collect network traffic statistics so that if questions come up about how much traffic I'm using I have the answer independent of my ISP. I've looked at DD-WRT, but I see that even buying a new router that will be supported is a problem since I might get the wrong version of the hardware. I have a DIR-655 and a DIR-501 - neither of which is supported. I don't mind buying new hardware, but it looks like a crap-shoot to get one that will work. DD-WRT looks like a bad solution unless someone knows of a place to get a router that is guaranteed to work. Does someone know of an arduino or other SBC solution? I have plenty of NAT routers already, so I just need traffic statistics for external traffic. The network is GBit Ethernet inside and Cable / soon to be DSL outside. The DIR-655 only gives me "packets", not bytes transferred oddly enough. Thanks, ww

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• how to get ip address of a PPP(Point-to-Point Protocol) network interface?

  - by Xsmael

  I have a Linux machine with two network interfaces, and I'd like to get the IP address of the PPP interface w1g1 but it doesn't show up in ifconfig. There is a public IP on the PPP interface, but there is no internet connection, I'm trying to troubleshoot but I need to get the IP address of the interface and I can't. ifconfig : eth0 Link encap:Ethernet HWaddr 00:30:48:8D:F0:2C inet addr:192.168.2.254 Bcast:192.168.2.255 Mask:255.255.255.0 inet6 addr: fe80::230:48ff:fe8d:f02c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:9970 errors:0 dropped:567 overruns:0 frame:0 TX packets:4338 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:1441024 (1.3 MiB) TX bytes:915814 (894.3 KiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:675 errors:0 dropped:0 overruns:0 frame:0 TX packets:675 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:50659 (49.4 KiB) TX bytes:50659 (49.4 KiB) w1g1 Link encap:Point-to-Point Protocol UP POINTOPOINT RUNNING NOARP MTU:240 Metric:1 RX packets:748994 errors:0 dropped:0 overruns:0 frame:0 TX packets:748992 errors:0 dropped:0 overruns:0 carrier:3 collisions:0 txqueuelen:100 RX bytes:179758560 (171.4 MiB) TX bytes:179758080 (171.4 MiB) Interrupt:177 Memory:f881c400-f881e3ff w1g1 is connected to a modem by an RJ45<-Serial cable and the modem is connected to the phone line. The modem is a NOKIA DNT2Mi you can see it here Routing table : 192.168.2.0/24 dev eth0 proto kernel scope link src 192.168.2.254 169.254.0.0/16 dev eth0 scope link default via 192.168.2.180 dev eth0

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• Setting a subdomain to access home machine with windows remote desktop

  - by ianhales

  I'm trying to remotely connect to home machine through Windows Remote Desktop (amongst other things, but this is currently my primary focus). I can do this fine using my home WAN's static IP (thank god for cable!) with port-forwarding, but I would like to access it from a subdomain of my web-site (e.g. home.mydomain.co.uk). In the cPanel for my hosting account, I've gone into DNS zones and altered the A-record to point to my WAN's IP, which I thought should do the job, but I still cannot connect. When I ping the subdomain, I get my web-host's IP, which I guess is to be expected as I believe the DNS of the host domain is used first, then my server handles the redirection of traffic to the IP in the A-record. Is this the correct idea? Do A-record changes suffer from the same propagation delays as DNS record changes, as I suppose that could explain it? (by the way, this thread confirms my thoughts that setting the A-record should be enough: Hostmonster Subdomain redirected to home server IP: How to ssh into home server using subdomain)

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• Intel Motherboard Lightning Victim Dies Hard

  - by Stetson RDT

  Today, I have a more hardware-related question. I have an Intel board, and I really do not know which board it is, I built the machine for a relative, but he forgot to keep the documentation. Long story short, the computer was disconnected during a lightning storm, but a lightning strike travelled in via the ethernet cable (It was directly connected to a power brick commonly seen on those long distance ISP Wireless transmitters), and the motherboard was shocked. I am attempting to get this PC going. The problem is as follows: The computer will randomly reboot, just in the middle of anything as it pleases. May load to EFI (or whatever BIOS is nowadays), may load to bootloader, may even get to the OS. But before 5 minutes is up, the system will always die. Out of curiosity, I plugged my voltmeter in to a molex connector. On the 5V side, it gets a good, consistant +5.13V. On the 12V side, it fluctuates, as follows: Upon immediate startup, it soars to 12.11-12.13V. It will now do one of two things: it will immediately jump down to 12.04-12.05V, or hover for about a minute at 12.11-12.13, then jump down. It seems the longer the voltage stays at 12.11-12.13, the shorter the machine will stay running. Also, post codes, whenever the machine locks up, but does not die hard, seem to be between "AA" and "AC". Does this make any sense to anybody? Do you all think this motherboard is salvageable? It was an expensive bugger, and I'd prefer to not replace it.

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• Windows 7 - ignore security when reading external drive

  - by w-

  hi, My system hard drive on an XP computer kind of failed (random corrupt sectors). So i got a new harddrive and am trying to recover the files. The filesystem is NTFS. The system i'm trying to use when recovering the files is Windows 7. I'm obviously an admin on this box. The last data i'm trying to recover is stuff in the Documents and Settings folder. I'm using a SATA to a USB cable thingy so that I just plug it in as an External Hard Drive. The problem: In Windows Explorer when i try to copy the data, I keep getting prompted with Security warnings and error messages. It keeps telling me i have to change the owner permissions of the folder and all it's contents. If i tell it to change all the files and folder permissions it takes a really long time because it has to recurse through all the folder contents to change the permissions. Is there a way for me to ignore the file permissions when doing this? thanks

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• Windows 7 does not detect my new hard drive?

  - by jasondavis

  I just built a really nice new PC. Some specs... Intel i7-930 CPU ASRock Extreme X58 motherboard with sata 3 and USB 3.0 12gb of G-Skill DDR3 RAM 80gb Intel G2 Solid state drive for Windows 7 and other programs to run on Windows 7 Pro 64bit OS 2 1gb grapghic cards for 4 monitor support Thats the main components. Well today my new 1tb western digital hard drive came which I plan to use for data to preserve the life of my SSD (hopefully). I hooked up it's sata power input and then hooked up it's sata data cable to a sata 2 port on my motherboard, I boot windows 7 and go into my computer and the drive is not showing up with my other drives. I then re-boot again and check again, no luck. I then shut down the PC and open the case back up, I then check my connections and they all look good. I then boot up and I can see the new HD is on and spinning. I then go into my BIOS settings to see if it registers there and it DOES! It shows I have a WD 1tb hard drvie on sata 2 port 6. So I am at a loss of why it is not showing up as an option in windows? Windows acts as if the drive is not there. Please help

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• Graphics artifacts/distortion with Win7 and nVidia

  - by Gepard

  Problem I encounter is rather hard to describe, so I provide a screenshot: http://dl.dropbox.com/u/1732760/video-distortion.png As you can see there are some horizontal stripes in random colors. These stripes appear sometimes in all windowed apps, games and on the desktop too. They tend to stay in place until I refresh window (or force it to to redraw by for example minimizing and maximizing again). They also tend to appear in the same place and shape multiple times, even if they disappear, it's very likely they will be again in the same place after a while. These artifacts do not blink or change if computer is idling. If I don't touch anything, do not use mouse, they will stay in place forever (unless some app redraws its window on its own). I first encountered this problem some weeks ago. Back then I thought it might be cooling problem, so I took out the graphics card, removed dust from the radiator and fan and put it into PC back. I also ran some stress test using Furmark (peak tempearature was ~65C) to see if the problem becomes more intense if the card gets hotter, but suprisingly no artifacts whatsoever appear during the stress test. Graphic card is Galaxy GeForce 7300 GT with DDR3 memory, was never overclocked. Drivers are the latest, from Nvidia site. OS is Windows 7 64-bit, updated. AMD64 3000+, 2GB RAM. I'm running a dual monitor setup with 2 19'' Samsung LCDs and problem is on both, so I assume it's not a monitor or cable issue.

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• windows 7 clock jumps back about every hour + internet disconnects

  - by IlyaD

  I have the weirdest problem, for the last few days every hour or so (not exact) the clock jumps about back in jumps of 15 to 60 minutes and after some time the internet disconnects. i can reconnect the internet by unplugging and plugging back the network cable. This is the second time this problem happens to me, the first time was when I installed VirtualBox. whaen I removed it the problem was gone. This time I have no idea what triggered it, the only thing I installed about the time the problem started was iTunes update (10.5.1) I tried removing it but the problem remained. (also tried to remove other programs i installed day or 2 before and it also didn't help) also, this is not a VM and currently I don't have any VM software. any ideas..? UPDATE since the solution is in the comments i'll write it here - apparently the windows time service got broken, this is the fix: http://technet.microsoft.com/en-us/library/cc738995(WS.10).aspx (run "fix it" from IE browser only) UPDATE 2 The fix didn't work, about 2 hours passed and first the internet disconnected and then the clock jumped back... This probably means that the problem is not only in the clock

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• Custom PCI bracket with support, for custom PCB?

  - by newbiez

  I am considering to put a custom PCB card that I made, into my computer. It won't go on any PCI connector, it plugs in on a USB connector on the motherboard, via a ribbon cable. I need thou to plug a device to it; which means that either I leave the PCB outside the case, hanging by the ribbon (bad idea), or I could put it in a PCI slot, using a bracket. The issue is that the brackets that I have, do not have tabs, so I have no way to screw the PCB on them. I was hoping to find something that would allow me to put the PCB on it, and then just fit it in the PCI bracket opening, like this: http://www.idotpc.com/TheStore/pc/viewPrd.asp?idproduct=1203&idcategory=0 This one won't fit the bill since the holes are too close apart, compared to the one that I have already on the PCB (and can't make more holes). Do you know if there is a place where they make universal PCI bracket mounting systems for custom PCB? I just need one, so can't even order a custom one (they ask me 120 dollars for one). Thanks in advance!

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