I built a new computer ~1 month ago and I've been having the same issue this whole time.
When I play computer games (mostly CS:S, TF2, and WiC currently) the computer will completely shut off. There isn't any kind of warning like a lock up before it happens, I'm just running along and down it goes. It doesn't happen at regular intervals and it's not consistent between games (at least that I can tell). It crashes the most with HL2: Lost Coast (in game and stress test), then TF2, then WiC, and it has yet to happen while playing CS:S.
In the Lost Coast stress test it would shut off at the same time every time it ran until after I RMAed the first mobo, now it will finish most of the time. (All of the following info is based on the new mobo, in case that was in question.) While playing the game it liked to crash in on particular area, but did crash in other places as well. TF2 is similar, it seems to like certain areas on certain maps more, but will crash many places. I can usually get some where between 10 minutes and an hour or 2 between crashes. Sometimes it will go several hours of game playing and not crash, then I quit the game and everything stays fine.
System:
ASUS P5N-D w/ Noctua NH-U12P and AS5
Intel Core 2 Duo E8400 3.0GHz (No OC)
Corsair XMS2 Dominator DDR2 1066MHz (2 x 1024)
BFG GeForce 8800GTS (G92) 512MB
Thermaltake W0131RU Toughpower 850W Modular Cable
WD Raptor 150GB
LITE-ON CD-RW
LITE-ON DVD-RW
(I have also 2 500GB hard drives, but they aren't powered up because I'm trying anything/everything to figure out what?s going on)
Things I've tested:
3DMark06 - 3 passes- No failures
SiSoftware Sandra Burn-in - 3 passes - No failures
Memtest86 - 6 passes - No failures
Prime95 - 5 hours - No failures
nTune Stress test - 30 minutes - No failures
(nTune will "stop responding" some time after 30 minutes but Windows doesn't crash and the computer stays up)
Fixes I've tried:
Disabling the second monitor output and unplugging the monitor from the graphics card
Video driver: update > uninstall > reinstall > uninstall > Driver Cleaner > reinstall
Setting default GPU fan speed to 50% > 75%
Disabling on-board sound
RMA mobo (for high pitch sounds coming from the back plate/northbridge, not just because of the crashes)
On the old mobo I flashed it up to the latest version and that didn't help any, haven't tried it on the new one yet though.
The install is clean, save for the firefox, flash, mobo software, testing software, office 2003, mouse driver, keyboard drivers, and games.
I've tried running ASUS PC Probe II and nVidia Monitor on the second monitor while in game and don't notice anything too out of the ordinary, at least from my perspective. Also, I've thought about reinstalling the chipset drivers, but I'm not sure how much good that could even do.
I'm really at a loss now. Any thoughts, advice, ideas of things to try would be greatly appreciated. If there is any info I left out just ask. I was trying not to put too much in, but still explain the problem and what I've done to try and fix it... Although I think I might scare some people off with all of this info.
Thanks reading!
UPDATE:
I've unplugged both of the optical drives. Changed GPU power cable. Ran Memtest86+ over night (over 6 passes) with no errors. Still continues to crash.
UPDATE 2:
Ran 3DMark06 with 3 passes, tried under clocking the GPU while increases fan speed, still crashing.
When I play computer games (mostly CS:S, TF2, and WiC currently) the computer will completely shut off. There isn't any kind of warning like a lock up before it happens, I'm just running along and down it goes. It doesn't happen at regular intervals and it's not consistent between games (at least that I can tell). It crashes the most with HL2: Lost Coast (in game and stress test), then TF2, then WiC, and it has yet to happen while playing CS:S.
In the Lost Coast stress test it would shut off at the same time every time it ran until after I RMAed the first mobo, now it will finish most of the time. (All of the following info is based on the new mobo, in case that was in question.) While playing the game it liked to crash in on particular area, but did crash in other places as well. TF2 is similar, it seems to like certain areas on certain maps more, but will crash many places. I can usually get some where between 10 minutes and an hour or 2 between crashes. Sometimes it will go several hours of game playing and not crash, then I quit the game and everything stays fine.
System:
ASUS P5N-D w/ Noctua NH-U12P and AS5
Intel Core 2 Duo E8400 3.0GHz (No OC)
Corsair XMS2 Dominator DDR2 1066MHz (2 x 1024)
BFG GeForce 8800GTS (G92) 512MB
Thermaltake W0131RU Toughpower 850W Modular Cable
WD Raptor 150GB
LITE-ON CD-RW
LITE-ON DVD-RW
(I have also 2 500GB hard drives, but they aren't powered up because I'm trying anything/everything to figure out what?s going on)
Things I've tested:
3DMark06 - 3 passes- No failures
SiSoftware Sandra Burn-in - 3 passes - No failures
Memtest86 - 6 passes - No failures
Prime95 - 5 hours - No failures
nTune Stress test - 30 minutes - No failures
(nTune will "stop responding" some time after 30 minutes but Windows doesn't crash and the computer stays up)
Fixes I've tried:
Disabling the second monitor output and unplugging the monitor from the graphics card
Video driver: update > uninstall > reinstall > uninstall > Driver Cleaner > reinstall
Setting default GPU fan speed to 50% > 75%
Disabling on-board sound
RMA mobo (for high pitch sounds coming from the back plate/northbridge, not just because of the crashes)
On the old mobo I flashed it up to the latest version and that didn't help any, haven't tried it on the new one yet though.
The install is clean, save for the firefox, flash, mobo software, testing software, office 2003, mouse driver, keyboard drivers, and games.
I've tried running ASUS PC Probe II and nVidia Monitor on the second monitor while in game and don't notice anything too out of the ordinary, at least from my perspective. Also, I've thought about reinstalling the chipset drivers, but I'm not sure how much good that could even do.
I'm really at a loss now. Any thoughts, advice, ideas of things to try would be greatly appreciated. If there is any info I left out just ask. I was trying not to put too much in, but still explain the problem and what I've done to try and fix it... Although I think I might scare some people off with all of this info.
Thanks reading!
UPDATE:
I've unplugged both of the optical drives. Changed GPU power cable. Ran Memtest86+ over night (over 6 passes) with no errors. Still continues to crash.
UPDATE 2:
Ran 3DMark06 with 3 passes, tried under clocking the GPU while increases fan speed, still crashing.
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