Computer won't boot,no fans spin after shutting down normally yesterday.

[dragonballz4]

I switched off the computer normally yesterday and when i try to press the front panel power button nothing happens, no fans, no lights on mobo, no hard drive sounds. I tried to start using the power switch on the mobo (which has its LED lit up) still the same thing. I tried to unplug everything and boot up with 1 stick of ram still nothing. I read other threads having similar issues and most of them hint at either a dead PSU or motherboard but i don't understand how to check which one is it

My specs:-
Intel i5 4690k
16 gb ram
Nvidia 750ti
Asus Z-97 Motherboard
750 Watt corsair power supply

 

[alexoiu]

Try clearing the CMOS (unplug the power cord and remove the CMOS battery for a minute).
If still no go, try testing the power supply: https://www.youtube.com/watch?v=5FWXgQSokF4
See if a fan connected to it does spin.

 

[dragonballz4]

it failed the paper clip test fan didn't spin.

 

[alexoiu]

Then try testing different power supply.

 

[Drew-]

I literally just fixed my brothers with a similar problem about 10 mins ago.

I checked the PSU on another PC and it was fine.
I cleared the CMOS and nothing.
I took the motherboard out to clean any build up and power it on while still out of the case and it booted up. Something was probably touching the board.

I hope this solves your problem.

 

[dragonballz4]

The power supply was faulty. Computer booted up normally with another one.