for a while now my friend has a problem with his pc when he plays games.
after 1-2 hours the games closes, returning back to windows.
we updated all the drivers many times, reinstalled windows many times,
i even took the pc to my house, did RAM tests & HDD tests, after that did a stress test for 2 days while playing in the computer & nothing happend while the pc was in my room & i thought it was over for that prob.
& it came back again soon after.
the pc specs are:
P-D 3.4Ghz @ stock with Stock HS.
Gigabyte 8I945P-G-RH (Bios F3) [installed new chipset drivers yesterday....& still]
Hynix 512MBx2 RAM
Sapphire 6800gts 256MB
WD 160GB IDE
if anyone can think about the sorce of the problem it will be very helpfull...
it's with all games...
so i think of a problem with 100% load for a long time...
can it be the PSU?
i think it will react like heat load & not turning of the prog...
maybe a mem prob? ( i did stress tests & ram tests- 0 errors)
The first thing that comes to mind is the video card potentially overheating, since it only happens while gaming. Also does the computer sit "in" a desk at his house? It may not be getting enough cool air. When it was closing to windows was it logging any kind of errors in event viewer?
You could start by posting what game he is playing. Perhaps there are log files associated with the game where errors could be getting logged to that you may not necessarily see on screen. Perhaps check the Windows application log for errors specific to the game. I know you say it doesn't happen at your house but that aside, it could be a problem with the game too, perhaps a known issue fixed in a later game patch, make sure you have the latest version of the game.
a few things i'd recommend, if you have a spare harddrive (doesn't have to be big) install a fresh copy of windows on the spare disk to check if it is windows (its memory mapping is weird), aside from that i can't really think of anything aside from mobo, psu or graphics, but i doubt it to be them for some reason...