Computer starts up and off right away

KHFreak741

Honorable
Apr 16, 2013
60
0
10,630
Whenever I try to start my computer by pressing the power button the blue led lights up for a second and the PC turns off immediately. I don't know what's wrong it was working fine two days ago. Yesterday I didn't even use my computer. I've already tried switching electrical ports, and I tried changing the power wire. Any ideas on what could have happened or how to fix it?
 

KHFreak741

Honorable
Apr 16, 2013
60
0
10,630
Dammit I'm so broke, too young to have that kind of money, for another PSU! I'm going to wait a little before trying to turn it on again, maybe there's not enough power for it to start up.