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My friend has been playing games on his new build for some time now. However, lately, his computer will randomly reboot out of nowhere, so far only happening in game, and presumably only to happen in game as it happens nowhere else. This can happen in game during play or even in the options. Note, it isn't a crash or blue screen. It's just a normal reboot. This started today, I believe, and has only occured in two games: Dead Space and Stalker: Shadow of Chernobyl. He has played a handful of games before these, for about a week or so, without this problem.

We theorized on two possibilities: Maybe something is overheating? Maybe the power supply is inadequate? These two were quickly dismissed, as all his components were operating at normal temperatures when he got back to his desktop from the reboot, and we all know these parts don't exactly cool down quickly, especially if they get hot enough to trigger a reboot. Besides, I know at-least my motherboard reports processor overheating at start-up, and requests I press f1 to continue into boot. The PSU one was dismissed too. He has an 850w power supply on a rig that was estimated to take only 720 some watts, that's with some overcompensating to be safe.

He opened up his case to make sure nothing was seated wrong or in the way. All was fine, but he did notice a sticker on his video card. It had a giant barcode on it and some numbers. Now, I'm used to seeing these stickers, they're the warranty stickers, right, and removal voids the warranty? Yeah, well, we find it odd because this sticker is slapped right over the circuits of the video card, not on a block or anything. Is this normal? Should he remove it?

Right now, I am concerned with the memory. Could that be at fault? Here are his specs:

  • Windows 7 Home Premium, 64-Bit
  • Intel i7 950
  • EVGA GeForce 570 GTX
  • 4 GB DDR3 PC10666 dual-channel Corsair RAM
  • Corsair 850w PSU
  • Gigabyte GA-X58A-UD3R
  • Western Digital 1 TB WD1001FALS
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It may be blue-screening anyway. When you reboot next time, turn off the "Automatic restart" option (under the F8 menu). For what it's worth, I think it's video card drivers. –  user3463 Dec 24 '10 at 22:44
    
He said he is using these drivers: nvidia.com/object/win7-winvista-64bit-263.09-whql2-driver.html Shouldn't he be getting his drivers from EVGA's site instead? –  Reznor Dec 25 '10 at 0:44
    
Also, he said that it doesn't actually reboot. It fully shuts down. He has to manually power it back on. –  Reznor Dec 25 '10 at 0:46
    
No need to get EVGA drivers -- nVidia makes the chip (which is what needs the drivers). –  Matthieu Cartier Dec 25 '10 at 0:56

2 Answers 2

some bios have the option to shutdown/reboot a system if it passes a certain temperature, i might be a small value causing the problem, i would go there and poke around the ACPI options also.

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+1 for thermal issues. Check the Processor, Chipsets, GPU(s), Powersupply, make sure fans aren't gunked up with dust. Make sure thermal paste is properly applied to all heatsinks, etc. –  vcsjones Dec 25 '10 at 1:59

Bad memory could certainly do it. Boot up a memtest86+ CD and run a torture test overnight to see if that's it.

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He ran memtest. No problems. –  Reznor Dec 25 '10 at 0:34
    
Switch DIMMs around. Sometimes memtest86+ won't catch everything. –  ultrasawblade May 17 '11 at 17:21

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