PC fan running full speed - Solved
Its an HP tower PC. Following a recent power failure, the CPU cooling fan now runs full speed, sounds like a jet taking off! I've checked the CPU temp, its running about 31 degrees C. The cooling fins...
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We have some HP small chassis PC at work that will do that. The problem is a bad electrolytic capacitor on one corner of the mother board. I believe it's 1000uf at 6.3 volts. If you look at the caps you will see several that have the tops pushed up and it's one of those. Have changed 4 so far and has fixed everyone. Did a Google search initially and found it.
