My PC will not turn on Please help???

Oh wait i found out ssomething!!!!!

When I press the power buttom the light in the back of the powerbox turns off like it always did, but nothing happens as usual.... but i held the button down to see if something would happen and the light back in the powerbox turned back on, I think that it could be the power buttom because when ever i turned on the pc the light in the back turns off, and once i turned it off the light goes back on, so I think it could be the power buttom thats not sending the pulse to the motherboard? could that be it???

No power from the computer can be caused by any of the below possibilities: Connections not connected properly,Third-party hardware,Bad power cable,Incorrect power supply,Bad battery,Bad power supply, power button, or power board or inverter. Also, check your boot set-up for further information.

Hey guys, i checked all the wires, took out all the componets and cleaned them, Now i realized that its a connection problem on the PC Main wires.

My PC is working now but I don't know for how long, since its a bad connection, I'll have to take time to get back to the pc and see which one is broken or faulty. Thank you guys again for your help. Much apreciated.

Hey guys It working, after I took out all the cords and wires, and componets cleaned them and then put them back in. I found out that it was a bad connection in the ATX Power supply cable, now I don't know which cable but I'll check each one indivisually later. Thank you guys for your help!!!!!