All of a sudden, my Windows 7 PC has started to suddenly reboot without warning shortly after starting up a game, and I'm curious if I should suspect the video card or the power supply being at fault. Oddly, after turning off the automatic reboot option in Window's Startup and Recovery options, I don't see a true blue screen of death when this happens. Instead, my screen goes black, and my system seems to hang.
The full details:
I played games for a few hours yesterday with no problem. Towards the end of the day, I upgraded my Nvidia drivers from 360.97 to 310.90. After another 30 or so minutes of gaming, I had no problem. This morning, however, I can't load up a game for more than a minute before it causes my screen to go black (again, it was automatically rebooting at this point until I set Windows to stop doing that).
(I had a similar situation about a month ago, where I started getting graphical artifacts in my games for a a few minutes before my system would in fact get a true BSOD, which indicated an issue with the video driver. After a few days of this, the card permanently died, and I couldn't get any video output from it. I RMA-ed the card to MSI, who sent me a replacement. Everything seemed fine until today.)
Initially thinking that the driver update last night started the problems, I did a system restore back a few days to version 360.97. I saw the same black out/system hang behavior still, so I did a clean reinstall of the drivers, only to see the same issue still occur. So, I'm wondering now if I've managed to burn out yet another video card, or if this is a sign of something different - say, my power supply unit slowly going bad and not being able to provide enough power to my system when my video card starts kicking into gear. It seems too soon for the replacement video card to be going bad too.
Is there any way I can tell what might be going wrong for sure? Without a true blue screen appearing, I can't tell what it is that is failing.
Here are my general system specs: Windows 7 Pro x64, ASRock Z68 Extreme4 Gen3 motherboard, Intel i5-2500K CPU, 16 GB RAM, MSI GTX 560 Ti video card, OCZ 500W PSU (I can't remember how old the PSU component is, though I'd guess at least 3-4 years)