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Computer won't boot or show video


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#1 sporkman101

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Posted 07 December 2010 - 02:56 PM

All right my system specs are AMD single core CPU. Onboard video. 1gb of ram. Dvd burner and a sata HD. I have had this computer for about 2 years now and decided to open it up to clean it out. I only removed the CPU heatsink and blew it out and when I put it back and hit the power button all the fans and HD start, but no beeps (POST) or video to be seen. I have already checked all the connections and tried unplugging the DVD drive to no avail. Any help is appreciated.

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#2 dc3

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Posted 07 December 2010 - 10:25 PM

The first thing that comes to mind is that you have removed the heat sink and fan assembly from the CPU which means that you will need to clean the surface of the heat spreader of the CPU and the heat sink and then reapply the thermal compound which was installed between the two.

The thermal compound is important as it provides a molecular bond between the CPU and the heat sink which enhances the thermal convection increasing the cooling of the CPU.

The second thought is did you bend any of the pins of the CPU when you plugged it back in?

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#3 sporkman101

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Posted 10 December 2010 - 03:47 PM

I reapplied some thermal compound when I put it back on and none of the pins got bent.

#4 DeexEnigma

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Posted 10 December 2010 - 09:31 PM

Im agreeing with dc3 on the CPU front for your immediate issue.

It sounds as if you didn't remove the CPU?
It may be booting and not have a good thermal contact on the CPU heat-sink, check and recheck.
Being an AMD check the cpu hasn't been crushed/warped either, being that the heat-sinks do require a level of trickery to install flat.




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