Random Artifacts appearing.

[Soctial]

I have a modified Dell XPS 8700 with a MSI GTX 1060 3GB OC, 10GB of DDR3 ram, and a 460W PSU stock with the PC. It has lasted me for about a year, but yesterday I decided to paint my room and had to disconnect my PC and put it on my bed. I was done painting and put it on another desk in my house and after 20minutes of usage, it started have purple and red artifacts and restarted, I was only watching YouTube, nothing too demanding. I then decided to play COD WW2 and after about an hour I got off, went back to YouTube and started having artifacts again. I tried to update the drivers, but after a minute of pressing Express Download on the GeForce Experience program the pc screen turned white and restarted and repeatedly kept doing it whenever I tried installing new drivers. I also looked into the PC and I see a light next to my PCI slot labeled RP4 AUX PWR. Any ideas on what is wrong?