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  • Find out when a system went down?

    - by Clinton Blackmore
    I have a Mac OS X 10.5 server, with a RAID set in it, that went down due to a power outage on Thursday, and the machine is not happily booting right now*. It is possible to find out when the machine went down, while not booted off the internal drive? (I'm booted off an external drive, waiting for the RAID sets to initialize.) Normally, I'd run last. The man page doesn't indicate that I can run it against a different startup volume. It looks possible to parse /var/log/utmpx, but I don't think it'd be worthwhile to try to do that from scratch for this one-off problem. * I'm still trying to figure out why it isn't happy, and may ask a follow-up question. Right now I can see that UserNotificationCenter crashed repeatedly early Thursday morning, and that securityd, mdworker, and ARDAgent crash shortly after startup [I think -- I want to verify when the box went up and down]. The login window does not come up right (I think it is crashing or not able to cope with a dead securityd). The box is supposed to be set to go down when the UPS tells it power is out; at the moment, I'm wondering if it went down, and turned back on multiple times! I sure hope not.

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  • Why did my laptop turn off?

    - by darenw
    Normally I can slip my running laptop into a backpack, go somewhere, and if it's no more than about half an hour later, it'll still be running. At the destination I plug in the AC power unit and all is well. I run it off of the AC unit before and after the trip, have the screen at less than full backlight brightness, and don't have any peripherals that burn power. Sometimes the wireless switch accidentally slides in the backpack, and that causes extra power to be used and the laptop dies before I reach the destination. Sad, but so be it. But sometimes the wireless switch is off, I've reached the destination in less than 30 minutes (typically 10-20 min), and I know the battery was fully charged, yet the machine is off. Is there a way to determine, after the fact, why the machine shut itself off? I'm running Linux on a fairly powerful Gateway with 4GB RAM, fancy nvidia graphics, dual core cpu, chosen more for number crunching power than battery life, but should last easily for half an hour if not an hour.

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  • Computer randomly shuts down with a fading alarm power button and CD drive

    - by Shad
    I am currently experiencing something very very odd. Having build my PC myself, I have never had any issues (or anything heat related). A few moments ago my computer shut down very randomly and everything goes blank, when I looked down on my case's power button it was fading on and off in such way I've had never seen before. I noticed the CD drive all of a sudden also started blinking randomly. What do you guys think this problem is related to? It is definitely not a overheating issue and I am pretty sure my 600 watt power supply didn't blow because right now I am able to turn it on and boot up the PC but 20 seconds later it shuts down (sometimes doesn't shut down for 2 minutes). I have no idea what this is... My specs are (built by myself): i5 3570k (unoverclocked) GTX 560ti Asrock Z77 Pro4-M motherboard 8GB Vengeance RAM 600W Corsair power supply 500GB of Seagate HD Case: Corsair Carbide 300R

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  • PC shut downs automatically after 10-20 second. No POST screen, no beeps

    - by emzero
    I have this not-so-old computer that's not being used for a year or so. Specs: Motherboard: ASUS PN5-E SLI CPU: Intel Core2Duo E4300 RAM:2x2GB SuperTalent DDR2-800 VGA: Zogis GeForce 7950GT PSU: Vitsuba San-55-S 550w HD: No hardrives yet When I power on the computer, everything seem to start, but right away the whole system shuts down. I've removed and changed the RAM sticks, take out the VGA, everything I could think of. So what could it be causing this? The PSU? The motherboard is dead? The CPU? Any help to isolate the problem will be useful. Thanks PS: Please don't close the question, this could be helpful to anybody having a similar problem, even with different hardware. UPDATE I've removed the old thermal paste and apply a brand new one. I also cleaned every dust using a high pressure gas dust remover. Checked for bad capacitors, all of them seem ok. Opened the PSU, removed big giant dust balls, cleaned with high pressure dust remover. Still the same problem, but now it stays powered on for almost 20 seconds maybe. But no POST screen, no beeps at all, nothing. So I suspect it's a motherboard or PSU failure. Unfortunately I don't have an energy tester to test the PSU... Don't know what else to try. I don't have another 775-motherboard to test the CPU, RAM and VGA with it.

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  • Click sound from computer when shut down

    - by user32569
    Hi, I build my new computer yesterday and I noticed, when computer is shut down, I mean the exact time its looses power from PSU, relativelly loud CLICK sound occurs. Please does anyone knows from where? I think MB, SSD, VGA, CPU nor coolers are not cousing this. I would guess maybe Samsung 1TB HDD (maybe when heads go back to LZ) or some hard safety switch or relay in PSU? Or just the MB speaker? (Yes, its actually installed). Do you have any experience with this? Thanks.

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  • Samsung laptop randomly shuts down

    - by Dmatig
    I've rewritten this question because it turned into an indecipherable mess. I have a Samsung R560 laptop that is overheating, and shutting itself down under load consistantly. Thank you quickcel for reccomending me Speedfan to monitor my temps. Here they are (Load / Idle): (Ignore "Temp1 and Temp2", whatever sensors they are they'd always random, pretty sure they're broke). The load temperature is after just 5 minites of playing Fallout 3 - another 5 minutes and it (the GPU - 9600M GS) consistantly breaches the mid 90's then shuts down, so it's hard to get a good picture of it. I'm looking for some solution or way to decrease these temperatures, because they seem far too high even idle. I've tried: Opening up the case and clearing of all dust with compressed air. Updating drivers for my Graphics card Have purchased and am using a notebook cooler I don't want to: Undervolt / underclock (defeats the point of having a more expensive card) Use lower power / performance settings (again, i might as well have bought something cheaper) Is there anything else i can try (software or inexpensive hardware) that can help me fix this? Has anybody had a Samsung laptop and knows if this can be sorted under my warranty, and the turnaround time of sending it off (UK?)(it has always ran hotter than it should, but now at 6 months old is getting hot enough to power off)

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  • Laptop shuts down randomly without warning

    - by Robert P.
    My Asus Zenbook UX32V turns off randomly when I'm working on it. This happens both when the computer is recently turned on (5 minutes), and after being on for several days. I'm not running any heavy software The laptop is not heating The fan is not working on the maximum capacity (it's not heating) It happens when the laptop is lying still on the table It is no warning, it simply goes black It happens both when charging and on battery My guess is that it suddenly lose power somehow. What puzzles me is that I can flip the laptop upside down, sideways, shake it, etc. without it shutting off. This makes me think it's not something that's loose causing occasional short-circuits. I realize that the laptop probably doesn't like flipping and shaking, but it was the best way I could troubleshoot. I rarely turn the computer off, only have it in hibernate or sleep mode (most often hibernate). I've never experienced that the laptop is off when I wake it up from sleep mode. I've had the problem for a few months and it happens 2-8 times a week. Specs: Asus Zenbook UX32V Windows 8.1 (it happened in Windows 8.0 too) Intel i5-3317U CPU @ 1.70GHz The laptop is approx 1.5 years, but it has a small dent on one of the sides that probably voids the warranty. The dent has been there since week one and I don't think it's related to the problems I'm having now. Does anyone have a clue what might cause this, and how it might be fixed? I've read all other questions (some of which are listed below) that seem related to my issue, but none report the same behavior as I'm experiencing. Most report heavy games, heating etc. Asus N53J Laptop randomly shuts down Laptop is randomly shutting off Computer shuts down without warning My laptop acer aspire 5720 suddenly turn off randomly Computer randomly shutting down Windows 8.1 randomly shuts self down ASUS K55VM Laptop unexpectedly shuts down

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  • What damage will powering down instead of shutting down do?

    - by JonHopkins
    What is it that Windows is doing when it shuts down? Assuming I've saved everything, what negative impact does powering down instead of shutting down properly have? We've all done it at some point and personally I don't know anyone whose machine has died as a result. (Just to be clear, I know I shouldn't, I'm just not sure why.)

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  • Laptop overheating within minutes of start up

    - by Spik330
    I have a Dell Windows 7 Home Prem with an I7-720QM. More information on the computer can be found here http://www.dell.com/support/home/us/en/04/product-support/servicetag/51CVCN1/configuration The Problem I am having is the computer will over heat unnaturally fast. From the time it takes from boot to when i can run my diagnostic tools which takes about two minutes the cpu temp is 86c after a few more minutes the cpu temp will reach 100 and the computer will black screen shut down. In total the the laptop can only be run for 3-5 minutes before completely shutting off. During this time there is nothing extensive running. After the laptop shuts down you have to wait for it to cool down or it will shut off even faster sometimes 7-15 seconds well still in the boot screen. Does anyone know what could be the problem maybe a sensor or is the computer fried?

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  • Windows 7 - 64 Computer shuts off unexpectedly

    - by C. Ross
    I have a home built Windows 7 x64 computer with a Core 2 Quad CPU. It has recently taken to suddenly shutting down/turning off at unusual intervals. It seems to be most common when playing media. I have tried running SpeedFan, and the CPU temp seems to hover around 49C. The computer has been running fine for over 1 years. Could heat be my problem, and how should I address it?

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  • PC shut downs automatically after a second

    - by emzero
    I have this not-so-old computer that's not being used for a year or so. Specs: Motherboard: ASUS PN5-E SLI CPU: Intel Core2Duo E4300 RAM:2x2GB SuperTalent DDR2-800 VGA: Zogis GeForce 7950GT PSU: Vitsuba San-55-S 550w HD: No hardrives yet When I power on the computer, everything seem to start, but right away the whole system shuts down. I've removed and changed the RAM sticks, take out the VGA, everything I could think of. So what could it be causing this? The PSU? The motherboard is dead? The CPU? Any help to isolate the problem will be useful. Thanks PS: Please don't close the question, this could be helpful to anybody having a similar problem, even with different hardware.

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  • Is it really necessary to call /bin/sync twice before an unmanaged power-off?

    - by Jeremy Friesner
    Hi all, My company sells an "embedded device" which is implemented as a headless Linux box with ext4 on an internal SSD. Some of our users have a habit of doing a "save current settings" on this box, and then cutting power to the unit as soon as the unit reports that the save completed (ie two seconds later). This was causing occasional corruption of the saved files, as the data wouldn't always get flushed to the SSD before the power went out. So I tweaked my software to run /bin/sync immediately after writing the file (after closing the file handle but before notifying the user that the save completed). This appears to fix the issue, but my coworker says that one call to /bin/sync isn't sufficient, and that to be really safe I ought to run /bin/sync twice in a row. That sounds like paranoia to me... Perhaps a habit from earlier versions of Linux or unix whose sync utility didn't work reliably. Does his advice have merit, or should one call to /bin/sync suffice?

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  • How can I know I'm buying a heatsink that will work with my CPU?

    - by Mike Peshka
    Recently I've been using my CPU a lot more for gaming, and as of two days ago, my computer had just been shutting off suddenly with no warning. I'm inclined to believe I need a new heatsink and cooling fan system. (Correct me if I am wrong.) Now I went around to BestBuy and Staples to purchase a new one, but both places instructed me to look online. Now I am posed with a problem. I don't know how to shop for one online because I want to make sure it will work with my unit. My CPU is a Pentium® Dual-Core CPU E2210 @ 2. 20GHz

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  • Random shut down? Asus N53J Laptopi

    - by Mr.Y
    My Laptop is pretty new and today it random shut down on its own. I was surfing the net and the computer shut down on its own (Like losing power, without any warning). It was the 2nd time, the first time was 3 weeks ago. Btw it happens during cold days. I remember one time I was unable to turn on my laptop at all. So I'm pretty sure it's not related to heat issue... could it be the laptop is too "cold"? My room temperature is around 17=18 degree on average :P edit -I use Windows 7 Professional. -I run memtest86 once and it passed. -I run my laptop WITHOUT battery all the time.

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  • Windows fails to restart on reboot

    - by daramarak
    We have many machines running windows xp embedded. The machines are configured to reboot if any problems should occur. But our problem now is that in some cases the machines seems to shut down, but never reboots again. The same machine might reboot fine in the next time we try. Does anyone have clue what the problem might be. Does anyone got some advice on how to debug this problem. Are there any logs that might contain valuable information? Recreating this problem is not done easily so elimination methods are not feasable.

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  • MacBook Pro (2007 - ATI-Card) Screen goes half black then shuts down the entire computer

    - by BluePerry
    Hey, when I'm starting my MBP I get about 10-60 seconds of the booting process before the screen goes half black (Its like applying a black to transparent gradient from the left side of the screen to the middle of the screen). After a 5 seconds the entire screen blacks out and the MBP shuts down. There have been issues with heat and some minor artifacts on the screen in the past but nothing serious as far as I know. Everything could be resolved by rebooting or letting the MBP cool down a bit. I would like to identify the problem now. There are 3 possibilities I can think of right now: My graphics card is defect and shuts down after a few seconds. (But if thats true, I find it kind of hard to explain the HALF black screen) My LCD-Panel is defect and sends back wrong signals so the system shuts down??? (I not sure about that) My fan or/and thermal sensors are defect and forcing the graphics card to shut down. Can anyone point if I'm right or if there yet another reason for this. I'd be thankful for any hint or tips. Cheers, Per

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  • Windows 7 laptop with problems shutting down

    - by Seth Sticco
    This is a thinkpad convertible tablet with Windows 7. When you try to shut down, it seizes at a screen with a gradient background and a Think/Thinkpad logo (forgot which). If you close it at that point, wait for the moon led to light up (meaning it's sleeping), then open it back up, it immediately continues and shuts down successfully. Any ideas on how to troubleshoot this?

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  • Why does my laptop shut down, does it get too hot?

    - by Kevin P.
    When I play games, or use powerful-applications such as Autodesk Maya, my laptop just shuts down, ofcourse without any warning at all. This is what I've tried so far: Cleaned my fan, completely! Checked if I have enough RAM and good enough graphics card, and I do. (6 GB RAM, Nvidia GeForce GT540M with 2 GB VRAM) None of these options worked. Even tried to clean my fan twice! Now, I have some options I could also try, but I don't know if that have anything to do with it or not. I was thinking reinstalling my Windows 7, because maybe it has to do something wrong with the installation? My laptop is about a year old, and this problem just happend out of no where, short after I downgraded from Windows 8 Release Preview to my original Windows 7.

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  • How can I find out which service is keeping Vista from restarting?

    - by Jeff
    Running Vista on my Toshiba laptop for several years now. Recently, I noticed it will not restart - I have to power cycle it. I have enabled Verbose Status messages, so I know it's stuck at "Stopping services". Is there a way to figure out which service is not stopping? I'm hoping for some kind of log like the bootlog. I've tried looking through the event viewer - no luck there.

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  • How to sleep computer via batch file? (Windows 7)

    - by Saebin
    So I want to make a batch file that will sleep my computer after a period of time. The closest thing I have found is placing it in standby, but seems to work differently then the sleep button on my keyboard (longer bootup, doesn't wake on mouse click). Any ideas? Would it be easier in python or c#? The less then ideal technique mentioned above is calling this in the cmd prompt: Rundll32.exe powrprof.dll,SetSuspendState

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  • Computer randomly shuts itself off

    - by Decency
    I have not been able to determine a pattern for why this happens, despite my best efforts. I've attempted to run it on full power with Prime95 and this doesn't trigger a restart. Generally the restarts occur while I'm playing games, watching videos, or even just having multiple tabs open in a browser. However, I often play processor intense games for hours without any restarts occurring, and sometimes they'll happen 3-4 times in an hour during less intense activity, so I don't think that is the problem. I imagine it has something to do with overheating or power consumption so I've been monitoring CPU temperature and cleaning with compressed air, but the problem keeps happening. I don't know how to track power consumption, and assume that this is the problem. Whenever this occurs, the sound gets stuck in a short loop of whatever was playing at the time, though restarts also occur when nothing is playing. Here is a screenshot of temperatures: and under load: Here's the parts list: http://secure.newegg.com/WishList/PublicWishDetail.aspx?WishListNumber=10546754 As shown in the list, the case includes a 585W Power Supply, which I've been told should be plenty. I built the computer myself with a friend's guidance but it's very possible I did something wrong. Right now I'm looking into ensuring that I have the latest drivers for all components. Any help would be appreciated- thanks.

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  • On Windows 7, how to Shut Down the computer without the Update?

    - by Jian Lin
    Sometimes when my Win 7 machine has programs that crashed, maybe Firefox, or IE, I would like to shut down the computer without installing any Windows update. That's because I worry that if IE or Firefox crashed, the system is not in a very stable state, so I would rather install the update later. But it seems I only have 2 choices: 1) Shut Down and it always will do any Update 2) Restart, and no update is done (these are 2 choices among the shut down / log off option) So is there a way to Shut Down without doing the Update? Or must I restart first, and then do the Updates, and then Shut Down?

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