watching videos

So I was watching a YouTube video and I opened services.msc to check something. When I alt+tab back to the video, the picture was frozen for a bit while audio was still playing fine. I opened Task Manager and recorded a video with my phone, because I didn't want to slow down my laptop with a...

Ive had this Problem for so long, i cant even remember when it started Basicly, my PC Bluescreens with WHEA Uncorrectable Error 24/7 on a Loop, meaning it Reboots itself and after some Minutes, crahses on its own, rince and repeat, unless im either watching Videos (even then its not guaranteed)...