PC won't power on

[InsertFunnyNameHere]

I left on vacation and when i came back my pc didnt want to turn on. When i press the power button the fans spin and the power led lights up for a second and then everything shuts off. After that the power button doesnt do anything. When i turn the power supply off and on again(with the button) and press the power button again the same happens. Any ideas?

[PineyCreek]

Might have been hit by a power surge.  Start troubleshooting.  Do you have a PSU tester or another PSU (power supply)?  Do you have any indicator lights on the motherboard?  Information about the system would help.

[InsertFunnyNameHere]

The system is really old, i dont even use the pc. The power supply is some LC power 420w power supply and i dont have a psu tester. I have a psu from my main rig but it would be complicated to unplug everything now.

[PineyCreek]

8 minutes ago, InsertFunnyNameHere said:

The system is really old, i dont even use the pc. The power supply is some LC power 420w power supply and i dont have a psu tester. I have a psu from my main rig but it would be complicated to unplug everything now.

Considering it was just sitting there plugged in, I'm going to guess either something pulled loose in the system, or you have a bad PSU for whatever reason.  Could even be bugs in the PSU that shorted it out, although usually the aftermath involves smoke.

[InsertFunnyNameHere]

I just tested the psu and it works(the fan spins when i short the green and black wires) so it's probably something like a bad motherboard

thanks for the support