Fried CPu and MOBO

Asus mb / P4s800d-x
May 16, 2009 at 12:29:06
Specs: Windows XP, P4 3.0 Ghz/2 gig
The post that the CPU Heatsink fan clamps to broke and the clamp and heatsink came loose. I discovered this when the computer would come on for 3 secs. and then shut down and I took the case apart. I ordered another P4 and replaced the old CPU. Now the computer comes on but I get no video at all, just "no signal" on the monitor. I switched out vid. cards but no change. I'm thinking the Mobo is fried but I don't know how to test it. Any other ideas or way to test the Mobo?

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May 16, 2009 at 17:55:30
You can't overheat a P4 to's virtually impossible. They're designed to shutdown if the temp gets too high. Years ago one of the hardware sites actually ran a P4 with no heatsink at all so chances are good you did not have to replace the CPU. But you do need it install the heatsink properly.

Find your CPU on this list, then check the instructions. If you installed the heatsink differently than shown, you did it wrong & that *could* be the cause of your problem.

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May 16, 2009 at 20:27:52
Thanks for reply. I had to change out heat sinks because the Masscool clamps wouldn't work after the post on the mobo broke. I switched to another heat sink with different clamps that hold the heatsink down. When the post on the mobo broke the metal clamp came loose and I don't know what it might have contacted. The old P4 would shut down after about 3 secs. When I changed it out, the computer runs but it doesn't look like any video is getting out.

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