PC shuts down after upgrading my intel CPU

[darko6977]

I recently bought a new intel core 2 duo e8400 3.0Ghz cpu and when i install my new cpu normaly u try to turn on my pc and it goes on for about 6-7 seconds and then shuts down. Any help???

 

[Bill Reinhardt]

My best guess would be power supply, what proessor are you coming from?