Why does the computer turn off every other day or when it turns off immediately 1 second after turning it on?

Question

Electronics

Help, - it happens that in a day, sometimes in two, a week .... after pressing the turn button, the computer turns on and goes out in a second? helps - pull out the power cord wait 20-25 seconds and turn it on again then it starts ... what could be the reason?
Home PC, 5 years already, mother ga-ma78lmt-us2h, percent with a hair dryer 2x6 1055t, I don’t remember the power supply xs, I need to untwist it
. case? who knows?

Answer 1

libastral tells me that the kayuk has come to the capacitors. Open, watch, solder.

Answer 2

Change the power supply