Case fan rpm problem, error msg on boot up

Please try to replace the fan and after replacing it, reset the bios.
another way is to change the position of the fan's power source.

This is not that unusual, I have an HP with the same sensor error on it's PS fan. Generally you can disable the warning if you know the fan is working by going into BIOS and poking around.

If this is not an option in your BIOS, you can try simply replacing the effected fan as it is difficult to test which has failed, the motherboard sensor or the sensor in the fan.

When you replace the fan $10, it will either continue on it's way or give you the error, if it still gives the error, comment back with the make and model of the board and we'll see what else we can do for you.


Hope this helps FixYa,

Chris

Hi there.
Look on the motherboard for a three pin white plug (header) next to its should be marked system fan it looks like this >>>>

Plug the fan connector into this check the bios again.

Please post back with the results and more help if needed, good luck and thanks for using FixYa!!