Computer does not switch on after power outage

Question

VOLTAGE DROP OFF FOR PC does not restart

The other day my pc was turned off due to power outage. Since that time the computer would not turn on again, no sign of life, it seems dead.

I did several tests, changed the power outlet and disconnect the wires ... also I have reseated the cards ... but the result is that nothing changes.

What can I do? Could there may be damage to the hardware due to the power outage? Note: the voltage drop is not due to a lightning storm and so is not due to damaged components (burnt card etc ...)

Original Text:

l'altro giorno il pc mi si è spento improvvisamente per calo tensione.... da quel momento non si è piu' riacceso...nessun segnale di vita...sembra proprio morto.

Ho fatto diverse prove, cambio presa di alimentazione, scollegare i fili...insomma ho "mischiato le carte"...ma il risultato è che non cambia nulla.

Cosa posso fare? cosa puo' essere successo? Possono esserci danni hardware per il calo di tensione? NB: il calo di tensione non e' dovuto ad una saetta e quindi escluderei danni causa temporale (bruciature scheda ecc...)

Grazie mille

Answer 1

Apperently power surges can happen due to many factors (lightning being least common). I would first try leaving the computer unplugged from power for 10 minutes, then plug it back in again and see if it powers on. If that doesn't work, try it again except also remove the button battery (this will probably reset the BIOS). I'm not sure why this works. Somehow the computer knows that something bad happened and triggered some fail-safe which prevents it from turning on until you drain all power and start over.

Next: Hardware may have been damaged. The first thing I would expect to go bad from a power surge would be the power supply, so that would be the first piece of hardware I would check. You can use some kind of power supply tester. If you are good with electronics, you can try manually testing it as described here.