Motherboard won't start with power button

Masud Imran

Honorable
Aug 5, 2013
5
0
10,510
When I connect my power cable the LED on my motherboard comes on. However when I hit the power switch on the front, absolutely nothing happens, no CPU & PSU fan spinning, no beeping, nothing. I tried circumventing the powerswitch by short the two pins but with exactly the same result.

Important: I found that the PSU is faulty, while shorting the Green and Black , fan is not spinning properly.After change the PSU result is same.
 

Masud Imran

Honorable
Aug 5, 2013
5
0
10,510

I short and hold for 2-3 secondes the Green (PS_ON) and the Black (GND) cable at the ATX connector to start up my Mobo, then CPU fan & PSU fan start spinning but to nothing appear in monitor.