[SOLVED] PC Won't Boot Up? Nothing Lights Up, No Display Either.

[plinkaberry]

Initially, the GPU and Motherboard were lighting up, and the fans were spinning...but the monitor had no display. I tested the monitor with the laptop using an HDMI cable, and found that the monitor was working just fine. As of now, pressing the power button, nothing lights up in the PC, not even the motherboard or GPU.
I know that it seems like a PSU issue, but what about when everything was lighting up while the monitor was not getting signal?

Please help

 

[signorigianmario]

Try another PSU. If it happens again, there is a 99% there is a motherboard issue.

Awaiting further replies.