9800se goes blank

[EnforcerGT]

I got my 256bit powercolor 9800se about a month ago from newegg. Ever since I got it, after about 1-2 hours, the vid card shuts off. After I reboot its fine. Not really a big problem but it could turn out to be one so I could use any help. Thx in advance.

 

[joemama]

Could be a power supply issue, try a stronger power supply and see if the problem goes away..