PC restarts out of nowhere

I have an Alienware Area-51 R4 prebuilt, and I can’t afford to upgrade or replace any hardware right now, so I’m trying to figure out what’s actually causing this.

I think it’s a PSU problem but I’m not sure I’ve looked at event viewer and a lot of the event IDs are 10010 7022 1801 1803 but the ones that caught my eye are 41 and 56

I’ve posted this problem before and they told me I should check this and 41 is most likely a power supply problem. It also gets triggered sometimes by joining certain games and I think it crashes more on high performance but I’m not sure.

Anything I should do?