Please help have I fried the cpu?

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Joined: Oct 20 2007
Posts: 3

Hi all I'm in a little bit of a pickle a friend asked me to have a look at his PC as it wasn't starting very well, it was booting as far as the windows front screen (the one with the little bar running) and then rebooting in a loop.
I noticed that it was covered in dust and I mean covered in dust especially between the heatsink and fan so I started to take out the components and clean everything, this was going ok until I tried to take the heat sink off the processor I wiggled the heatsink to free it from the CPU and as I lifted it both the heatsink and the CPU came away together the CPU pin/bar that is used to insert the CPU was still in the lowered position. So anyway I gently prized the CPU away from the heatsink and noticed that the thermal paste had hardened to a hard black mess so I cleaned the heatsink and processor with a little touch of methylated spirit on a clean cloth then added new thermal paste and replaced everything and rebooted and to my horror the PC didn't work, it sounded as if it was going through the usual routine I could hear it booting in to the hard drive but nothing on screen, I mean nothing not even the DOS screen just a blank screen.
I have taken the ram out and dont hear any beeps from the computer.
What have I done have I fried the mobo or the CPU?
Please help!

The Mobo is an Gigabyte model ga-8simlnf
and the pcu is Intel celeron 2.66/256/533
sl7dl Malay
l426c217
Skt 478

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Jon's picture
Jon
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Joined: Dec 20 2003
Posts: 2804
Have you pulled the CPU again

Have you pulled the CPU again to be sure all the pins are present and straight?

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Joined: Oct 20 2007
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Yeah I have had a quick look

Yeah I have had a quick look at it and all the pins look fine Sad

coius's picture
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Joined: Aug 25 2004
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Check your PM

I have the exact same Model CPU I am willing to part with Smile and it's cheap compared to eBay!

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Joined: Oct 20 2007
Posts: 3
I was told that a quick test

I was told that a quick test for the processor is to remove the heatsink and fan and boot up the computer and if the processor heats that it should be ok.
I noticed that a few of the pins weren't perfectly straight so I straightened them and tried this and it heats and I thought magic but when I replaced the hs&fan it was the same result blank screen.

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Joined: Jan 20 2005
Posts: 683
i would highly stress the fac

i would highly stress the fact that this cannot be done with all cpu's. i did the same test on one of my older athlon cpu's and it literally blew the die apart within 2 seconds and burned my hand.

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coius's picture
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Joined: Aug 25 2004
Posts: 1975
Die Sizes

only the larger Dies (like the P1/II/III and K6-2/3) were able to do these, however, the newer ones that have this itty-bitty dot for the actual chip, has no way to dissipate the heat enough for that few seconds before it overheats and destroys the processor. Usually, the smaller the center is (the actual die), the worse it will fare under this type of test.

Athlons/Semprons/Durons and P4/Later Celerons were the ones that you cannot do this to no matter what without having a definite risk of them blowing up.

This is just a hint for people thinking of doing this. BE CAREFUL!

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