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I have a hp slimline 3100. the cpu fan runs fast everytime i open a program or play a cd. it speeds up the slows down. sometimes it runs really fast, then the computer shuts down. whats going on?

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Also clean the old heat sink compound off both the CPU and heat sink and apply new compound. Radio Shack 276-1372 less than $3. It worked on mine now the fan doesn't even need to turn on.

Posted on Mar 25, 2011

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This is an indication of overheating within the PC. Open the PC case and clean all the air vents. Take the heatsink and fan off the CPU and give it them a good clean. Put the heatsink and fan back on to the CPU and start up the PC. check that the fan on the heatsink is running smoothly.
Also, make sure the vents on the power supply are clear and the fan on the power supply runs well.
If you go into the BIOS setup, you may be able to monitor the fan and the CPU temperature.

Posted on Mar 18, 2011

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