Question Computer doesn't wanna turn on after a power outage ?

Dec 23, 2020
Hi, so a power outage happened at my house while my computer was in sleep mode. After that, when i press the power button, it just didn't wanna turn on. i tried the hold power button and unplug the power cable thing, and it didn't work. The fans aren't spinning, no led light is on whatsoever. now this is the second time it has happened, the first one i brought it straight to a technician. he basically just clean some things up and took some parts out. sadly he didn't give a helpful explanation abt what was going on and how he fixed it.

so is this a normal thing considering it happened to me twice already? and how do i supposed to fix it?

thanks in advance :))