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Computer monitor turns off and then computer locks up

Last response: in Windows 7
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May 30, 2012 3:19:41 AM

I already made a thread about my other computer, but I thought that this would be a good time to make one about my main computer and its problems.

Once again, I can't find anything concrete on this subject so I wanted to ask all of you specifically.

Whenever I play games (World of Warcraft, League of Legends, DotA2, and other games) my computer occasionally does this weird thing where (in this order) the monitor will turn off, I can still talk on skype for a few seconds, then my computer locks up and all I can hear is the in game music and sounds infinitely looping.

This is a problem for me because most of these games are competitive and online, so when I crash my team and friends are likely to lose. For this reason, I have taken a break until I can solve this problem.

Here are my specs:

Operating System
MS Windows 7 Home Premium 64-bit SP1
CPU
Intel Core i7 980 @ 3.33GHz 38 °C
Gulftown 32nm Technology
RAM
12.0 GB Triple-Channel DDR3 @ 802MHz (9-9-9-28)
Motherboard
Alienware 0XDJ4C (CPU 1) 23 °C
Graphics
DELL U2711 (2560x1440@60Hz)
AMD Radeon HD 6900 Series (ATI) 51 °C
AMD Radeon HD 6900 Series (ATI)
AMD Radeon HD 6900 Series (ATI) 64 °C
AMD Radeon HD 6900 Series (ATI) 71 °C
CrossFire Disabled
Hard Drives
1954GB ARRAY0 (RAID)
Optical Drives
PLDS DVD+-RW DH-24ABS SCSI CdRom Device
DTSOFT Virtual CdRom Device
Audio
Creative X-Fi Audio Processor (WDM)

Any help/suggestions would be appreciated.
a b $ Windows 7
May 30, 2012 4:45:32 AM

is your system overheating when you are playing these games?
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May 30, 2012 5:30:01 AM

nhasian said:
is your system overheating when you are playing these games?


It stays relatively cool when I play. The numbers here were a bit off for some reason. I usually get on average around 50 degrees celsius.
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June 9, 2012 12:48:26 AM

Does anyone else have any suggestions?
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June 9, 2012 8:26:04 AM

Sounds like a video card driver problem. If you have the most up to date one installed already then try uninstalling it in safe mode and then do a reinstall
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June 9, 2012 11:46:17 AM

do you have spare videocard? it happens to me before. a videocard issue.
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