I have a system that reports that the processor fan is not working and turns itself off after 5 seconds. I installed a new fan which also would not run when plugged into mainboard. I tried two different places.
I then connected fan directly to power source and the fan runs ok. I guess i need to access the bios in order to switch off the fan monitor function but how can i do this ?? If the 5 volt rail is dead what can i do?