Mobo powers on automatically when the PSU is switched on.

roguish

Reputable
Jun 28, 2014
9
0
4,510
My new pc (all brand new components) is sitting on my table breadboard style. I only have the CPU, its fan, and 1 stick of ram installed. The CPUs power and the main ATX power are both connected. As soon as I turn the PSU on (at the back) the mobo powers on and the CPU fans start spinning but it doesnt POST/beep at me. I suspect a DOA mobo or PSU, but Im not sure how to work out what it is?

EDIT: Also just noticed the fan on the PSU isnt spinning, even when its powering the mobo.