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Random Computer Reboots while playing games

September 2, 2010 at 13:58:23
Specs: Windows 7 Ultimate 64-bit, Quad Core, 2.86Ghz, 6GB ram

I've a problem - My PC reboots itself randomly during games. Not all games though, only some - ie Dawn of War II, Fear 2, Portal & Company of Heroes all run fine, no problems; whereas Starcraft 2, Half Life 2, Alien Swarm, Crysis, AVP, and bizarrely winamps visualiser, all cause the machine to reboot, at differing times - Most last for a minimum of 5 minutes before the reboot, some will run for half an hour or more before rebooting.

Really at a loss.
System is 100% virus & spyware free
Graphics Card is an nVidia 285GTX, 1GB.
PSU is 950watt, 12V line is delivering 12.25V or thereabouts.
GPU temperature is in the 55 - 80deg. range (when playing).
CPU temparature is 44deg - 55deg when playing.

All fans are working. GPU fan currently running at 40%.

Any suggestions?

Thanks in advance!

See More: Random Computer Reboots while playing games

September 2, 2010 at 14:02:47
"PSU is 950watt, 12V line is delivering 12.25V or thereabouts"

Useless info. We need a brand name, model number, number of +12v rails available & the amperage rating of the +12v rail(s).

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September 2, 2010 at 14:14:29
Apologies -

Full name is X-Power PRO GTX Extreme 950

It has 4 +12v rails, rated at 20amps each

Does that help?

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September 2, 2010 at 15:52:16
"X-Power PRO GTX Extreme 950"

There's your problem. For one thing, you do not need a 950W power supply but you DO need a decent quality power supply made by a reliable name brand manufacturer. And generally speaking, a single +12v rail with high amperage is much better than numerous +12v rails at 18-20A each.

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Related Solutions

September 2, 2010 at 17:49:20
Figured that might be the case. I've always built my own PCs but in this instance I bought a pre built system... Any recommendations as to what brand / model I should go for?

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September 3, 2010 at 00:06:00
rosewill green series RG630-s12 (single +12v@50A) cost $60 (

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