Computer restarts without any help from me... I need some help.

[Speck102]

Hey people, I have been having problems with my PC lately, and I don't know which component is acting up as I recently upgraded my CPU, mobo, RAM, video Card, and PSU. I can run Windows for days without a hickup, but if I watch a DVD, or play a 3D game, after awhile, the computer just randomly reboots. Here are my system specs:

AMD 3000XP+
Chaintech 7NJL6 nForce2 Ultra 400
512megs Mushkin PC3200
Radeon 9800 pro(with custum hs/f, I havn't checked if it was installed properly by the previous owner)
Athena 450-watt PSU, +12v 19a, +3.3v 25a, +5v 36a, -5v 0.5a, -12v 0.5a, +5v-sb 2.0a

If there is any other info that may help, LMK.

 

[Uncle Bob]

disable auto reboot on error in system properties. If your system blue screens now rather than rebooting, then the most likely cause is an overheating video card.

if it still reboots randomly, then it's PSU (19a on the 12V rail is borderline)

 

[Speck102]

Thanks. What I did was take out the video card, and reapplied the thermal paste with some arctic 5. Now instead of rebooting, the system just hangs after awhile of playing games. I think that it is most likely the vid card. I will try a new hs/f. I will see if I can get another vid card to try out so I can be sure.

 

[amdskip]

Yeah, I've never heard of that power supply. Did it come with your case? How heavy is it?

 

[Speck102]

It was on sale at Fry's, it's pretty cheap, I believe the original price was about $50-$60. Not too heavy.