I've been using my system for the last month and a half with NO hitches... gaming was perfect for 5 hours at a time... NEVER a single problem.
I tried gaming yesterday...
My PC works perfectly in every facet except for when I play a Direct3D/DirectX game (for an unpredictable amount of time). I was playing UT2004 for 20 minutes and no crashes. I play Quake3, and it crashes after 4 minutes. Seems like it crashes fastest with Quake? however, it?s crashed in UT2004, and in MOHAA after like 5 or 6 minutes? it?s completely unpredictable. It just stops and either freezes frames? or? the monitor signal gets cut and my monitor goes into the standby mode? in both, the PC is completely unrecoverable (can?t ctrl-alt-del)
I?ve even gone back to a Ghost image of about a month ago? and I still got the crash. I know it isn?t bios or Cool N? Quiet related (because it was working fine for the last week under the newer bios and CNQ? and the problem persisted even after recovering the month old Ghost backup).
I've pulled out the 9800pro card and tried it in my older PC... no problems.
I tried the older PC's GeForce4MX420 on my PC... no problems.
As soon as I try my 9800pro in my PC again... crash after 5 seconds of playing QuakeIII.
I've found the problem.... urgh...
Well, it seems like my RAM is the source of the problem. I have 2 sticks of 512Mb corsair Value Select in slots 1 and 2. I would get the crashing when I had my Radeon card in... but not when I used the old GeForce4MX card.
When I pulled out the RAM stick from slot 2... Games WOULD NOT crash; However, when the two RAM sticks were in slots 1 / 2 or 1 / 3 ... it WOULD CRASH!
Bizarre, huh? SO... if i want to play games... i've gotta only use 512mb ram in slot 1.
SO... i can't truly narrow down whether the motherboard, video card, or memory is the "True" source of the problem... rather, it seems like it's an aggregate of the three!