Having problems with your HP Pavilion a305w (DM181AR) PC Desktop ?

System fan computer not running , checked setup and reading that system fan not spinning (0 rpm) checked cup, and found no visual problems with any fans.


Answers :

Lesbn man, if by your second post you mean the CPU fan is not spinning then that is likely the cause it won't boot. When the CPU overheats it'll start to do calculations wrong (causing a fault + restart or hang) or the BIOS will shut down the machine to avoid damage. Either one will keep you from getting into windows.

> Check for dust buildup on the CPU fan housing that could be keeping it from spinning. If clogged , blast it out with canned air.

> Check the power lead coming from the CPU fan to see if it connected to the motherboard.

> If you feel comfortable doing it you can further isolate the problem by plugging the CPU fan into one of the other 3 prong jacks that you have a WORKING system fan. If it spins up when you turn on the machine it's not the fan and you probably have a software config problem. Don't run it in this state for long (by that I mean seconds not minutes), you're just trying to see if the fan works at all. If it does it's likely what Nick described above.
You may have less fans than possible readings. That 0 rpm fan may be absent and so it is not the problem.
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