Custom comp. issues

[DeLoreanDMC]

I'm new to the forum, so if I do anything incorrectly, please notify me.  Today I left the house as I always do, with my computer on. I keep it in a well ventilated area, on a hard surface. The tower has four fans in it, so I think I'm good in that department. I came home, and saw the computer was off. So like any other person, I tried to turn it back on. It wouldn't budge. I followed the common things and turned it off, unplugged everything, plugged it all back in etc. When that did not work, I opened my tower up to see if everything was in order. As far as I could see, nothing looked out of place. When I go to turn it on, the power lights flicker, then go dead.  Anyone have an idea? Here's my stats on the comp:
Processor Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz
Nvidia GTX GeForce 760 Graphics Card
(I don't know much about power sources so bear with me aha)
APOWER AK SERIES 680W POWER SOURCE
I have somewhere around 1,500 gigabytes of data, and 8 gigabytes of ram.
4 fans, as I've said before.

Please, I spent quite a pretty penny of this comp, and I'm hoping somebody out there can help me out. Thanks in advance.

[camerongray]

APOWER AK SERIES 680W POWER SOURCE

I would first of all try a different power supply, that looks like a very low end, generic PSU, not the sort of thing that should be used in any PC really, let alone a performance one like that.

The power supply is the one part of the PC you should never cheap out on, if it turns out that you do need to replace it, get a good brand of unit such as XFX, Corsair, Seasonic, EVGA, Antec, Superflower.etc.

[DeLoreanDMC]

Aha! This would make a great deal of sense. I plugged the computer into several different outlets, and only one worked. Power source it is! Thank you very much Mr.Gray!

Resolved

[Geek-9pm]

That kind of thing can also mean the power cord has a problem. It is a good idea to have a spare power cord on hand. It happens.

[patio]

I'm confused...are you saying it was the power source and not the PSU ? ?