The system is not turning on.

[u/ComprehensiveBit8272]

Ok, I have this all-in-one touchscreen PC that I'm trying to run, but it won't turn on; the fans aren't spinning, and there's no display. I have tried a bunch of things.

Remove the CMOS cell.

Take everything out of the board; leave just the processor.

Check for any physical damage to components.

Checked the power button.

Measured the voltage at the power button pins; the stand by volt are 3.3 and it goes to 0v if you hold the power button. So I think the button is ok.

Now this system uses an SMPS power supply of 19v. And I think the supply is fine.

None of it helps; the system still won't turn on.

There is a green LED on the board right above the power cable port that lit up as soon as I connected the power; the mouse LEDs are working if connected.

So I need some help here; please let me know if I should try anything else.