Question Computer glitches out, with no recovery.

[Portside]

Hi, so as of lately my computer has being doing some weird voodoo. I've never experienced anything like this up until the last week or so. Here is an example of what happens. When I reboot it sometimes doesn't fix it, and comes up with a bright green screen. Other times when I restart it comes up with a lilac/purple screen. Any information is greatly appreciated as I'm baffled!

 

[Portside]

Computer information;


OS: Windows 10 Home Edition
Motherboard: b450
GPU: RTX2070ti
RAM: Corsair Vengeance RGB PRO 16GB (2x8GB) DDR4 3200MHz C16 LED
SSD OS Boot: Kingston 256gb
PSU: 650W PSU