PC shutting down....cant figure it out

Emodin

Distinguished
Feb 28, 2009
1
0
18,510
MB- MSI K9AG NEO 2
CPU- Amd 6000 Dual Core
Video Card - Radeon X1650 Pro
PSU- Cooler Master 500Watt



Ok this is becoming a major pain. This started a week ago at compeletly random times the pc just shuts down, no power what so ever. I have replaced the video card and memory and have the same issue. When this happens the only way to get it to have power is to flip the switch on the power supply off for a few seconds ..the power light on the front of the pc will blink on then off and then i can turn the power supply back on and it will reboot. This may happen every 5 minutes for an hour....or once a day.

I have also reseated the processor and applied some fresh Artic silver twice because a dozen people have told me its the CPU overheating, i downloaded a program called core temp and it shows it running between 35-42c on both cores.

any help would be great.