RAM lesz a hunyó:

The 8E error points at RAM problems. It's pretty unique for a STOP code in that it only points at RAM problems when you look it up! So there's a good start.

There are a couple of ways to diag it.

You don't say which PB model it is, but if it has two sticks of RAM you can try removing one of the sticks to see if the problem persists, and then swapping with the other stick likewise.

The other way is to download a RAM test utility and run that.

Azaz ha két darab RAM modul van benne, simán kisakkozod melyik a döglött.

Sok sikert! :)