... restarts or reboots while you play games or watch video.
Try updating the drivers for your video card, and upgrading DirectX to version 9.0c
Otherwise, scan for viruses.
basically...my computer turns off when i play games or watch movies, like completely. then it just turns back on normally. i bought a new graphics card since it seemed like that was the case and i could run games longer than usual but it still shut off after about an hour. everything seems fine inside the computer too.
if anyone knows anything that could help that would be greatly appreciated. i'm not too great with computers as you can see :/
my specs are
pentium(R) dual-core CPU E5200 @ 2.50GHz
DDR2 dual channel 2048 Mbytes
Radeon HD 4350