my pc turns on but!....HELP ME!!!

[guernseynick]

My pc turns off after about 30 seconds once i have turned it on. It lasts longer with the arctic cooling freezer 7 than the stock intel cooler....about 10 secs more. Is my cpu overheating?....
What can i do to stop it?
I am using a fatality aa8xe, 320w aerocool psu, sapphire x700, 1 gig of ddr2 ram and a artic cooling freezer 7.....socket 775 3.4 P4...
Is my psu too small and there is not enough power for the system?

thanks for any replies...

[tylerhskate]

Id say its def the psu

[pcboarder]

I would have to agree on the psu needing to be better get something around 420^ and you should be fine get like an enermax fortron...ect

[vaio]

Have you checked your bios readings???
See what pc health stats you have showing in there.