New built computer doesn't turn on, fans spin for a split second

Eotf

Reputable
Dec 12, 2014
2
0
4,510
I've just built a computer and it ran fine through the bios. After I installed windows and it seemed like it went through ok. Then the computer just turned off and now it won't power back on. But when I press the power button the fans will spin for a quick second. I also notice that the light on the motherboard is on.Any idea on how I can fix this?