System won't turn on after shutdown

JustThatJordo · Feb 22, 2014

I turned my system off last night before i went to bed and when i woke up it isnt doing anything when i press the power button. I have no idea what this could be so any help would be deeply appreciated.

Thanks

Ubrales · Feb 22, 2014

When the power is connected to the PC, are there any lights and fans that turn ON? Unplug the PC and then plug it back into a known good wall outlet, and check. If nothing comes ON then it is likely that the PSU has failed.

JustThatJordo · Feb 22, 2014

Everything is connected as it was last night, everything was working perfectly. Literally nothing happens when i press the power button on the case, i also tried shorting the power to start the pc (looked at some videos online) how do i know if the psu is the problem?

Ubrales · Feb 22, 2014

There is a "paper clip" test to check whether the PSU is functional, but this is not a very reliable test because it does not test the PSU under load.

http://www.corsair.com/us/blog/testing-your-corsair-power-supply/

A good way to check your computer's operation would be to use a different known good PSU.

Ubrales · Feb 22, 2014

Make sure that the home circuit breaker has not tripped due to some other cause. Re-set it.

JustThatJordo · Feb 22, 2014

I immediately thought it was the psu. Would it be worth just going out and buying a new PSU even if i don't know for sure the PSU is the problem?

Ubrales · Feb 22, 2014

JustThatJordo :

1. Make sure that there is power to the WALL outlet. Use a table lamp to check this.

2. Then ensure that the computer is directly plugged into the wall outlet - NOT to a multi-outlet power strip.

3. Now try to turn the computer ON.

After you do the above, if you notice that NO lights, and NO fans turn ON, then it is safe to conclude that the PSU has failed. At this point you may buy a 10% higher wattage replacement. The label on your present PSU will state the wattage.

Good brands of PSUs are Corsair, Seasonic, XFX, Antec, to name a few.

JustThatJordo · Feb 22, 2014

I plugged the power cable into the socket which my monitor was using and the PC still doesn't power up. Nothing happens no lights, no fans. Nothing, are you sure it's the PSU? I will go out now and buy a new PSU if that's the problem

Ubrales · Feb 22, 2014

JustThatJordo :

You can run the paper clip test and after that buy the replacement PSU. This test will convince you that it is the PSU.

What is the make and model of the computer? And PSU?

JustThatJordo · Feb 22, 2014

I built the computer myself with cheap parts just to play a few games that i wanted to play. The PSU model is EZCool

Ubrales · Feb 22, 2014

JustThatJordo :

http://www.tomshardware.com/forum/291781-28-ezcool

Not many good things said about this PSU.

Yes get yourself a good PSU - Corsair, Seasonic, XFX, Antec.

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System won't turn on after shutdown

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