Computer can't turn on

[Moonkee]

Title pretty much says it all. My computer is pretty good and about 11 months old, i've never had any problem with it before. This problem occured today when i tried to turn it on. The night before i had gamed for 17 hours straight atleast.
i'm a total nub at Computers so i hope someone here can help me out. The problem is that when i try to turn it on the power light will flash for less than a second and nothing will happen.

[Dizey]

Could be a bad motherboard, could be the power supply. Is your computer a prebuilt, and if so, it should still be just inside the 1 year warranty.

[Bitmap]

My old box does this sometimes. unplug it from the wall, hold the power button for ~5 seconds, then plug it back in and try again. I think it's something with built up charge from shoddy components. Worth a try at least

[Karteli]

I'm going with a bad power supply. I seem to have bad luck from them the most.

You could rule out power issues too if you have a voltmeter to check your AC lines (brownout conditions, or too high), just to rule that out, or try a different socket entirely.

Does the light come on everytime you try? That's just to rule out a residual charge leftover that you saw.

[Major Montana Max]

Is your computer plugged right into the wall, or is it plugged into a surge protector? I had a friend who had his computer plugged right into the wall, and a giant thunderstorm made his power flick on and off really fast for like 30 seconds, and after that his PSU was fried, if none of that happened, then i would check the PSU, gaming for almost 20 hours non stop might of made it fry...

[entrust]

I had the same problem today, and I think it's PSU as it was in my case. I was playing around a little bit to rule some things out and was almost sure that it was PSU and... it was. GL