I had a lock-then-shut-off problem a while back so I repalced the PSU and heatsink/fan combo for my AMD2000+ on my ASUS A7N8X.
I'm getting some issues again now, but these are only lock ups, no forced shut offs. It seems my computer gets under load, somehow when running media player, or certain mp3s. I want to say that sometimes I'll see the task manager register explorer as spiking in the resources department right before my system becomes unstable.
I actually cannot get an anti-virus run to complete without the triggering of this nusance. My computer locks and I guess restarts too(I always run the utilities while away).
Motherboard Monitor(or whatever it's called) says 87 degrees F CPU socket, 98 CPU diode and 120 on average, for the case reading.
When playing media players, VLC, Media Player Classic, and both packaged Windows Media Players(both modern and old school), all make the computer go to poo with certain mp3s. Some videos will cause the animation and music to pause at random times but I can close the video player and resume computer operation normally.
Some of these symptoms run along with other heat problems I've had before but I might suspsect a virus. I can't get some old school games to install, which normally should, because of issues over time. It's been a long time since formatting so maybe I should just do it and get it over with.
Or maybe figure out hardware/virus issues first?