Picked up a Xbox One S for free around Xmas, owner said it was temperamental as to if it would run.
Came with original box (poor condition)
Already had a good idea what was probably causing it - overheating.
So I stripped it down, and wow.... yeah... overheating alright, but not due to a lack of paste.
Under the heatsink, was paste EVERYWHERE.
So what I suspect had happened, is that it started overheating, and then someone had a go at re-pasting it themselves.... thinking the whole tube had to be used. It was a mess.
So I got to cleaning it up....
Did bit of a rough job but figured it'll do for now....... gave it some fresh paste and put it back together.
Guess what ?
Its been running fine since :)
I'll strip it down again at some stage and give it a better clean.