Originally posted by: ih8regs
abit ip35-e
kingston 800mhz 2x1 gb DDR2
Intel E2200
Antec 500w basiq
so first i had a radeon 3450 in there....running CoH on high would last maybe 2 min
now i threw a geforce 8600gt and it lasts a bit longer but still crashes
i minimize while im playing and CoreTemp shows 40 degrees. so i duno.
Is this a new build? Other games crash too (No? check for game patches from company website)? Does the OS/browsing etc work fine (yes? Update all drivers, chipset which could be the case since both vids crapout and neither known to have probs with that game, sound (disable in the game and if stable hmmm....), and especially vid though doubtful on the vid since ATI AND Nvidia died so fast)? Chipset is a biggie on considering two very new vid cards but still not likely.
Can you pass memtest or prime stable?
Video is not your problem (well, could be but, I'd bet money against it).
Up the mem .1volt if you're not already at 2.2v or higher. All memory will run fine for 2 minutes without blowing at 2.2v

I'm guessing new build maybe, and at 1.8v when it needs a bit more for whatever timings it's defaulting to. If you're 1.8v you could go straight to 2.0-2.1v no problem just to check for stability. Naturally I'd try 1.9 if stable at 2.0v etc to get it lower after stable.
If you don't know anything about memtest/prime try swapping modules real quick and see if it changes in your game. If it does yank one and test stable. still not? Change them still having just one. Stable now? You just found the bad one (assuming you did the volts above first ruling out timing crap probably). Since they are the same modules changing slots should not affect anything if it's NOT the modules. These are the quick/easy changes without much work.
You got another game you can toss at this system? Before we go screwing around any more we really need more info. When was PC built, is it just a new vid update, whats the whole system. Help us help you

Describe the crash better. Feel free to long post
Cr0nJ0b did a pretty good job of telling you where to look, I think I just repeated him with a bit more depth on his points.