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• Laptop connects to other network but not to my home wireless

  - by Nilesh

  My home network's wireless SSID is say "XYZ" I also have an ethernet wire from the same router. I have two laptops A and B Earlier both A and B were able to connect to my home internet through the ethernet and wireless. Suddenly, the laptop B can no longer connect to XYZ or through ethernet. When I do plug the wire, i get the connection icon all green but when I try to access any web page it errors out (page not found) But strangely laptop B connects to my neighbours wireless SSID "ABC". I have also tested laptop B with other networks and it connects fine. Laptop A and many other devices still connect fine with my home wireless "XYZ" Strange thing is when my laptop B connects wireless through XYz, it gets the IP address but then none of the browsers (chrome,firefox, IE) can show any web pages. What settings should I be checking on laptop B that is preventing it to connect to my home internet. Thank you

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• servers connected to a poweredge 6248 receive traffic for their 'neighbours'

  - by Hannes

  In the network we have a few vlans but at the moment I was investigating vlan2 which carries the most traffic. When tcpdumping on the eth0.2 interface, I see a lot of packets arriving which are not addressed to, nor coming from the server. I checked this on several servers in the network and they all have the same issues. In short, our switches don't switch the traffic but threat it like they are a hub. Can you tell me what settings on the dell poweredge 6248 should prevent this behaviour?

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• Files slow to save sometimes after Ubuntu upgrade

  - by Matchu

  I haven't quite been able to track down why this happens sometimes in Ubuntu 10.04 and not other times. I'll go into gedit or OpenOffice.org and try to save files, and, during some sessions, it will take up to 10 seconds to save the file, sometimes causing the program to become unresponsive. But during these same sessions, the files sometimes save instantly. This didn't start happening until after the 10.04 (Lucid) upgrade. I suspect that something is reading all the changes I make, or that there's some other big file action going on, or something like that. I disabled Tracker a while back, before the upgrade, and don't see it under the settings - could it be back under a different name under Lucid? You probably don't already know the answer, but how can I go about finding the cause of this problem?

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• Group traffic shaping with traffic control?

  - by mmcbro

  I'm trying to limit the output bandwidth generated by an application with linux tc. This application sends me the source port of the request that I use has a filter to limit each user at a given downloadspeed. I feel that my setup could be managed way better if I had a better knowledge of linux tc. At the application level users are categorized as members of a group, each group have a limited bandwidth. Example : Members of group A : 512kbit/s Members of group B : 1Mbit/s Members of group C : 2Mbit/s When a user connects to the application, it retrieves the source port to the origin of the request from the user and sends me the source port and the bandwidth at which the user must be limited depending on group to which it belongs. With these informations I must add the appropriate rules so that the user (the source port in reality) is limited to the right bandwidth. If the user that connect isn't a member of any group it should be limited at a default bandwidth speed. I'm actually managing this by using a self made daemon that add or remove rules from when it receive a request from the application. With my little knowledge of tc I'm not able to limit other users (ones that aren't in a group, all others in fact) at a default speed and my configuration seems awful to me. Here is the base of my tc qdisc and classes : tc qdisc add dev eth0 root handle 1: htb tc class add dev eth0 parent 1: classid 1:1 htb rate 100mbps ceil 125mbps To classify a user at a given speed I have to add one subclass and then associate one filter to it : # a member of group A tc class add dev eth0 parent 1:1 classid 1:11 htb rate 512kbps ceil 512kbps # tts associated filter to match his source port tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip sport 50001 flowid 1:11 # a member of group A again tc class add dev eth0 parent 1:1 classid 1:12 htb rate 512kbps ceil 512kbps # tts associated filter to match his source port tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip sport 61524 flowid 1:12 # a member of group B again tc class add dev eth0 parent 1:1 classid 1:13 htb rate 1000kbps ceil 1000kbps # tts associated filter to match his source port tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip sport 57200 flowid 1:13 I already know that a source port could be the same if its coming from a different IP address the thing is the application is behind a proxy so I don't have to manage any IP address in that situation. I would like to know how to manage the fact that for all other users (request/source port, whatever you name it) could be limited at a given speed each. I mean that each connection should be able to use at max 100kbit/s for example, not a shared 100kbit/s. I also would like to know if there is a way to simplify my rules. I don't know if it is possible to use only one class per group and associate multiple filters to the same class so each users could be handled by one class and not one class per user. I appreciate any advice, thanks.

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• Cannot SSH into Amazon EC2 instance

  - by edelwater

  I read: Cannot connect to ec2 instance http://stackoverflow.com/questions/5635640/cannot-ssh-into-amazon-ec2-instance Amazon EC2 instance ssh problems etc... But could not fix it: suddenly (after a year of service, no changes on my winscp settings) it gives me "network error connection timed out" (im using ec2-user) (also from the amazon console). Log FILE: http://pastebin.com/vNq6YQvN All Sites that run on it run fine port 22 is allowed (never changed it) (security group) using the correct ec2-user and domain via my winscp / putty i can connect to other hosting (via ssh) update: SOLVED. I spend 2 days without looking at my own IP address .... (since it did not change the past 3 years....). Your comments made the spark in my brain. thank you so much. (and only now i find dozens of discussions from angry users that the static addresses from my provider are changed to dynamic ones: http://gathering.tweakers.net/forum/list_messages/1501005/12 ...)

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• Win2008 - restrict VPN user permissions

  - by Sebas

  Windows 2008 R2 SP1 Foundations file server with no AD, only workgroup sharing some folders, and now a RRAS server. Shared folders are open to everyone in the office (XPs and Sevens) without accounts/passwords, but I was thinking about partially limiting access to the new "VPNuser" account. I'm new to Windows Server and its permissions settings: I thought about denying access to vpnuser through NTFS rights in some folders. It doesn't work, but now I'm guessing that the vpnuser is not considered as a logged user (doesn't appear as such) and is considered a "guest", like the rest of people connecting in the office. I say that because of this: http://social.technet.microsoft.com/Forums/windowsserver/en-US/ff6d3726-ff41-4d3f-9d97-5361af0206dd/vpn-users-on-server-shows-as-guest?forum=winserverNIS Also, because when I create a txt file using the VPN connection, owner field shows in description as "guest". Am I right? How can I set different rights for the VPNuser from the rest of "guest" users in the office?

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• Is there a way to do a Windows 7 repair install when you are unable to start/boot Windows 7?

  - by irrational John

  My understanding is that the only way to perform a "repair install" in Windows 7 is to run the install setup.exe within the Windows 7 installation you want to repair. This seems a little brain dead to me since usually the reason I wanted to perform the repair install was because the existing installation was so broken that I could no longer boot and use it. It seems Microsoft is saying my only option in that case is to do a clean install and then reinstall all my apps. So I'm wondering if anyone knows of a way to perform a Windows 7 repair install ... one that preserves your existing OS settings and application installs ... on a Windows 7 partition that cannot be booted.

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• Changing Admin Site URL (actually port) - how?

  - by TomTom

  I have a new install of the band new SharePoint 2010. I use host header identified site collections for everything. By default the admin site is on a random port. I would like to move the admin site to port 80, for the server name. As all sites have coded names (for example "intranet", "projects") this would allow administration via the server name - which is easier as external access does not have to remember the port number. How do I do this? I already changed the default URL, but the site (application) is still wrongly mapped. I dont find anything to change the IIS settings in the admin site. I possibly just miss it - so can anyone point me in the right direction?

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• hp laserjet 4200 madness

  - by C-dizzle

  I have an HP LaserJet 4200 printer that is acting really weird. I can print from internet just fine, no problem... but when I try to print from a document used in microsoft word, for example, I always get "Manual Feed Tray 1". I have racked my brain on this and cannot get it figured out. It's a networked printer and only an administrator account can make changes to it, I have also reset the printer back to factory settings, uninstalled and reinstalled onto the pc's and server it is connected to. Running out of hair since I'm pulling it all out... please help.

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• SharePoint 2010 MySites - Simple explanation needed!

  - by Chris W

  I've been playing around with the 2010 beta for a couple of weeks, experimenting with topology options etc. I think I've got myself totally confused as to how it works hence if there's any SP experts out there that can explain things in simple terms for me I'd appreciate it! I want to setup a farm with 3 servers providing the content & MySites. I presume that the way to do this is to load balance or DNS round robin traffic between the 3 servers. The bit where I'm confused is that My Site Settings page asks for a specific My Site Host hence all my site traffic will be pushed to a single server even though we have 3 in the farm. If this hosts fails I presume MySites will be unavailable. Is this right? How do I configure it so that access to MySites is load balanced across the 3 servers in the farm?

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• Grep all files in a directory and print matches with file name

  - by javanix

  I have a list of log files that I create as part of a video encoding script that I wrote. I would like to search all of them and print out certain statistics from the encode - how fast they were encoded, what settings were used, etc. I can search for the average framerate in one file via this 1 liner: cat ${filename} | grep average which outputs: work: average encoding speed for job is 23.211176 fps and search for the ratefactor: cat ${filename} | grep RF I would like to search all files in the directory and print off one, or prefereably both pieces of information along with the filename. Is there any way I can use find or grep to get this in a one-liner, or do I need to write a script? I would like output like this: /home/javanix/filename.log <RF line> <average line> I would like this to either work using FreeBSD 9 or Ubuntu 12.04.

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• Green bar on top of every (web) video, distorted colors too

  - by Walter Maier-Murdnelch

  Hey since a few days I have a problem with some videos I watch on the web (youtube, vimeo etc). There is a green bar on the top of the video and the colors are distorted, it looks like they are somehow shifted. I am not sure since when this problem appeared, I guess it might have been an update for the flash player. Anyways, I found a workaround. Disabling the hardware acceleration helps. right click on video - settings - disable hardware acceleration. After reloading of the page the green bar is gone. The problem is taht this setting doesn't seem to be persistent and so I have to disable it again on every other video. How can I make this setting permanent or how to get rid of the green bar alltogether? (I will add a screenshot later)

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• What's the best encoding for videos on the Zune?

  - by Will

  I've got videos I want to encode to put on the zune. Have the encoding software (using Expression Encoder), but I'm not sure about what I should transcode to. I used the settings built into EE for the Zune, but the sync software still shows these videos are being converted before sync. I already have to get these videos into an acceptable format, so encoding twice is a waste of time and space. What I'm looking for is a video codec, audio codec, bitrate, WxH, and anything else I need to encode a video so it goes straight from my disk onto my Zune without re-encoding.

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• How do I set my router up to authenticate with my service provider?

  - by João Lourenço

  Currently I have this setup: D-Link DSL2640U connected to the phone line: VPI/VCI 0/40, Service Category UBR Without PCR Service pppoe_0_40_3 Interface nas_0_40 Protocol Bridging (LLC/SNAP-Bridging) 802.11q not enabled Bridge Service Enabled Computers have individual PPPoE connections (in Network and Sharing Centre - Set up a new connection or network - Connect to the Internet - Broadband (PPPoE) - Username and Password) How would I move these settings on each individual PC to the router so that all I need to do is connect to the wireless? I have been unsuccessful setting up anything other than Windows PCs on the network (I have tried Macs, iOS and Nokia SmartPhones too). Thanks for the responses in advance!

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• Logitech Revue - tv picture extends too far off left/right side of tv?

  - by super user

  Hi, I got a logitech revue (for google tv). I hooked it up, works ok, but the picture is not fitting horizontally in my hdtv. The hdtv is a Sony Bravia, 2010 model. The tv picture is fitting vertically just fine, but it looks like the left and right ends of the picture extend way off farther than they should be. In other words, it looks like the picture is starting about 4 inches to the left of the left side of the tv, and extends 4 inches past the right edge of the tv. I know in menu - settings you have an option to "maximize" your picture, which works for the vertical directions, but the horizontal directions seem convinced that they're maximized properly and I cannot adjust. Any help here? Thanks

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• Nginx & Apache Cannot get try_files to work with permalinks

  - by tcherokee

  I have been working on this for the past two weeks not and for some reason I cannot seem to get nginx's try_files to work with my wordpress permalinks. I am hoping someone will be able to tell me where I am going wrong and also hopefully tell me if I made any major errors with my configurations as well (I am an nginx newbie... but learning :) ). Here are my Configuration files nginx.conf user www-data; worker_processes 4; pid /var/run/nginx.pid; events { worker_connections 768; # multi_accept on; } http { ## # Basic Settings ## sendfile on; tcp_nopush on; tcp_nodelay on; keepalive_timeout 65; types_hash_max_size 2048; # server_tokens off; # server_names_hash_bucket_size 64; # server_name_in_redirect off; include /etc/nginx/mime.types; default_type application/octet-stream; ## # Logging Settings ## # Defines the cache log format, cache log location # and the main access log location. log_format cache '***$time_local ' '$upstream_cache_status ' 'Cache-Control: $upstream_http_cache_control ' 'Expires: $upstream_http_expires ' '$host ' '"$request" ($status) ' '"$http_user_agent" ' ; access_log /var/log/nginx/access.log; error_log /var/log/nginx/error.log; include /etc/nginx/conf.d/*.conf; include /etc/nginx/sites-enabled/*; } mydomain.com.conf server { listen 123.456.78.901:80; # IP goes here. server_name www.mydomain.com mydomain.com; #root /var/www/mydomain.com/prod; index index.php; ## mydomain.com -> www.mydomain.com (301 - Permanent) if ($host !~* ^(www|dev)) { rewrite ^/(.*)$ $scheme://www.$host/$1 permanent; } # Add trailing slash to */wp-admin requests. rewrite /wp-admin$ $scheme://$host$uri/ permanent; # All media (including uploaded) is under wp-content/ so # instead of caching the response from apache, we're just # going to use nginx to serve directly from there. location ~* ^/(wp-content|wp-includes)/(.*)\.(jpg|png|gif|jpeg|css|js|m$ root /var/www/mydomain.com/prod; } # Don't cache these pages. location ~* ^/(wp-admin|wp-login.php) { proxy_pass http://backend; } location / { if ($http_cookie ~* "wordpress_logged_in_[^=]*=([^%]+)%7C") { set $do_not_cache 1; } proxy_cache_key "$scheme://$host$request_uri $do_not_cache"; proxy_cache main; proxy_pass http://backend; proxy_cache_valid 30m; # 200, 301 and 302 will be cached. # Fallback to stale cache on certain errors. # 503 is deliberately missing, if we're down for maintenance # we want the page to display. #try_files $uri $uri/ /index.php?q=$uri$args; #try_files $uri =404; proxy_cache_use_stale error timeout invalid_header http_500 http_502 http_504 http_404; } # Cache purge URL - works in tandem with WP plugin. # location ~ /purge(/.*) { # proxy_cache_purge main "$scheme://$host$1"; # } # No access to .htaccess files. location ~ /\.ht { deny all; } } # End server gzip.conf # Gzip Configuration. gzip on; gzip_disable msie6; gzip_static on; gzip_comp_level 4; gzip_proxied any; gzip_types text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript; proxy.conf # Set proxy headers for the passthrough proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_max_temp_file_size 0; client_max_body_size 10m; client_body_buffer_size 128k; proxy_connect_timeout 90; proxy_send_timeout 90; proxy_read_timeout 90; proxy_buffer_size 4k; proxy_buffers 4 32k; proxy_busy_buffers_size 64k; proxy_temp_file_write_size 64k; add_header X-Cache-Status $upstream_cache_status; backend.conf upstream backend { # Defines backends. # Extracting here makes it easier to load balance # in the future. Needs to be specific IP as Plesk # doesn't have Apache listening on localhost. ip_hash; server 127.0.0.1:8001; # IP goes here. } cache.conf # Proxy cache and temp configuration. proxy_cache_path /var/www/nginx_cache levels=1:2 keys_zone=main:10m max_size=1g inactive=30m; proxy_temp_path /var/www/nginx_temp; proxy_cache_key "$scheme://$host$request_uri"; proxy_redirect off; # Cache different return codes for different lengths of time # We cached normal pages for 10 minutes proxy_cache_valid 200 302 10m; proxy_cache_valid 404 1m; The two commented out try_files in location \ of the mydomain config files are the ones I tried. This error I found in the error log can be found below. ...rewrite or internal redirection cycle while internally redirecting to "/index.php" Thanks in advance

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• Jumbo Frames, ISCSI and ESXi

  - by vlannoob

  I have enabled Jumbo Frames (9000) in ESXi for all my vmNICs, vmKernels, vSwitches, iSCSI Bindings etc - basically anywhere in ESXi where it has an MTU settings I have put 9000 in it. The ports on the switches (Dell PowerConnects) are all set for Jumbo Frames. I have a Dell MD3200i with 2 controllers, each with 4 ports for iSCSI. Each of these ports is set to Jumbo Frames (9000) as well. So now the questions: Do I need to log into each Windows Server VM I am running and delve into the NIC properties and manually set it to Jumbo Frames in the NIC properties in the device Manager as well? Whats the best way of testing that Jumbo Frames are indeed working as intended?

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• .gitignore, hidden file

  - by Tonja

  I have some problems with the hidden files. I can see a file in cmd (it is a .gitignore file), but I cannot see it when I open it normally in a folder. I have changed alredy an option to see all hidden files. And I cannot see it as well in a git command prompt. What should I do to be able to see it? Thanks. PS. I can see it normally in a folder BUT it has no name. When I click on this file's settings it shows me: Datatype: Textdocument(.gitignore) Is it normal`?

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• SAS disk performance drops a while after reboot.

  - by Flamewires

  So we have some workstations with identical hardware. The Fedora14 box has a couple weeks uptime and still get good performance. hdparm -tT /dev/sda /dev/sda: Timing cached reads: 21766 MB in 2.00 seconds = 10902.12 MB/sec Timing buffered disk reads: 586 MB in 3.00 seconds = 195.20 MB/sec The Cent 5.5 boxes however seem to be okay after a reboot, /dev/sda: Timing cached reads: 34636 MB in 2.00 seconds = 17354.64 MB/sec Timing buffered disk reads: 498 MB in 3.01 seconds = 165.62 MB/sec but some time later( unsure exactly, tested at approx 1 day uptime) /dev/sda: Timing cached reads: 2132 MB in 2.00 seconds = 1064.96 MB/sec Timing buffered disk reads: 160 MB in 3.01 seconds = 53.16 MB/sec drop to this. This is with very low load. I believe they all have the same bios settings. Any ideas what could cause this on Cent? Ask for more info. It might also be worth noting, that passing the --direct flag causes the slow boxes to perform similarly to the non-slow ones for buffered disk reads.

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• Block site on a PC logged into a domain and using a proxy

  - by Rauf

  I read lot of posts related with blocking sites. Most of the posts says to edit hosts file. I know it is a good method. But this one is not working for me. Can you guess what is the issue by analyzing the following details, My PC is joined to a domain and using proxy settings, and the logged in user having administrator privileges. After reading some answers, I did the following Changed the hosts file to have # 38.25.63.10 x.acme.com # x client host 127.0.0.1 localhost 127.0.0.1 www.facebook.com Added no proxy for facebook, Still, it is not working. Why ?

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• How can I view a PDF in Firefox when the server specifies the wrong content type?

  - by Sam

  I am using Mozilla Firefox with a PDF viewer plug-in. The plug-in has been correctly associated with Adobe Reader files to view them in the browser in the settings. I would like to be able to view PDF files in Firefox rather than downloading them. This already works correctly when a web server indicates that a file has the Content-Type of application/pdf. However, some web servers provide other Content-Types for PDFs, such as application/octet-stream. (See this example of a PDF served with a non-pdf Content-Type.) I have looked at Firefox's MimeTypes.rdf file, and it appears to only support mapping applications based on file types for non-Internet-based files. How can I have Firefox view all PDF documents in-browser rather than only the ones with the application/pdf Content-Type?

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• Network on linux server is periodically down

  - by Fabian

  I have an old server running Fedora 4 that occasionally just stops responding via network for about an hour. This happens 1-2 times a week. Also no connection from the server itself to any other computer on the network is possible when it happens. The network settings and routes look fine. There are no unusual log messages and no unusual processes running at that time. If I restart the network or just do an ifconfig eth0 down & ifconfig eth0 up it works fine afterwards. I know that the server should be updated to a currently supported OS, but that is not really an easy option right now. Any ideas on how I could diagnose and fix that problem?

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• page up/down print ~ instead of history search in terminal

  - by Desmond

  I am on a Macbook Pro with mac os x 10.8.2 I have set: page up: \033[5~ page down: \033[6~ in terminal keyboard settings (pressing esc to get \033). My ~/.xinputrc is: # Be 8 bit clean. set input-meta on set output-meta on set convert-meta off # Auto completion options set show-all-if-ambiguous on set completion-ignore-case on # Keybindings "\e[1~": beginning-of-line # Home key "\e[4~": end-of-line # End key "\e[5~": history-search-backward # Page Up "\e[6~": history-search-forward # Page Down "\e[3~": delete-char # Delete key "\e[5C": forward-word # Ctrl+right "\e[5D": backward-word # Ctrl+left I am just following a guide found on internet (actually there are a lot of guide really similar): http://macimproved.wordpress.com/2010/01/04/fix-page-updown-home-end-in-terminal/ Unfortunately, the only (terrific) result is that when I press page up (fn + up arrow) just a "~" is printed in the terminal.

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• How can you configure the uPnP server on windows home server?

  - by pschorf

  I'm currently helping my parents with their home network set up while I'm home. I have a Synology NAS device which supports a uPnP server. I have a few MPEG-4 movies stored on the box, and simply enabling the uPnP server on the NAS streamed the video to some devices they have, including their Xbox 360 and Samsung television. They have a windows home server (HP MediaSmart.) I put one of the movies in the "Videos" folder of the device, and enabled sharing. It shows up on the television, but when played it produces an "unsupported file type" error. I have all of the transcoding settings disabled on the Synology device, so it should be streaming the same file. Is there some additional configuration I need to perform on the home server unit?

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• Best way to reformat/recover in Windows when your CD key is no longer valid?

  - by CSarnia

  I have a copy of Windows 7 Professional that I have downloaded from the MSDN e-academy (thanks to my school). Now, the problem is that these license keys are one-use only. If I need to reformat or do a factory reset, what is the best way for me to do so, without invalidating my license and screwing me out of an operating system? Edit: I would also like to know some information on the "restore to factory settings" option in Windows 7 recovery center. Does it do exactly as the name implies and starts you off as if you had just done a fresh install? If I had some kind of nasty trojan or virus, would it be able to survive through the factory reset? The recovery center also has an option for reformatting, though I don't think that it's an actual format - it just backs up your stuff into a Windows.old folder or something like that. Does that require a valid license key?

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