CPU Fan Not spinning problem

Q: My CPU fan sound has been very large, removed and found no exception. After the boot, the CPU, video card fan 5-6 seconds will not turn, and then the panel red light has been bright, green flashing, no alarm sound, long press power key can not shut down, only unplug the plug to be able to shut down the machine, what is this problem?

A: This situation is very rare, may be due to the motherboard parts short circuit, please clean the board components on the dust, and pull out the cards and wipe the gold fingers, and then reinstall, the fault should be able to eliminate.