Check for broken motherboard?

Matuteh

Honorable
Jul 31, 2013
25
0
10,530
Hello i would like to know how to check if my motherboard is broken.

When i turn on my computer there is no display, also the power button only works for turning it on, but not to turn it off, however:

I checked the PSU, it's not the problem.
I tryed all the components with another MOBO, they work.
There is no signal of broken capacitor

How can i be sure it's broken before buying a new one? Thank you!