Powering a mobo issue.

Correiaf

Reputable
Sep 27, 2014
5
0
4,510
Hi all i have just changed motherboard, processor and RAM. My main issue is that i cant power the motherboard. I have a power unit with 750w and the power supply is an 8 pin connector. The new mobo hás only 4 pins. I have tried using a P4 cable and using the standard 8 pin connector to no avail. No power comes to the motherboard. I have power elsewhere(gpu) but nothing on the Mobo.

I have an alienware XPS machine and upgraded the mobo

The new mobo is brand new too
 

Correiaf

Reputable
Sep 27, 2014
5
0
4,510
Let's see if this helps anyone. I have found that there is a click button on the power unit. If I press it everything turns on but I need to keep pressing it for the machine to stay on. The front power button doesn't power the machine at all. Have I missed anything?