Is my Power Supply working?

[StephenMcG]

I was editting a video in After Effects earlier and my Desktop shut down by itself, when I went to switch it back on, the pc just made a noise as if it was shutting down, there is power going into it I think, the LED's for my graphics card is on, the led for my power button is on, but when I press the button, my fans don't turn on, nor my computer, what in the world is happening?

 

[digitaldoc]

Take the care apart, and make sure all the cables are fully connected, and that the RAM is fully inserted and seated. Taking these things apart, and reinstalling them is the best method.