How to test for a fualty motherboard

GREG40000

Honorable
Jun 8, 2012
1
0
10,510
Hi all .
my pc has recently broken. Everytime i connect a new power supply to my pc everything will whizz around and sound working. Although there will be no image on the monitor. After iv failed to get my pc to work with a new power supply , i tesed my power supply to ckeck if that was the culprate. turns out the (-5v) is not lit on my pc tester, but alll the other lights are. Im suprised to think that just turning on my computer could blow the pc.
Please help me , im lost
regards