PC crash, now it almost no longer works?

For the situation, I was programming on the UE4 and suddenly it crashes. When I tried to restart it then it worked. Now comes the problem, I could always get to a menu but everything I tried didn't work. It was critical process denied (or died, do not remember). At first I thought it was the SSD. What it didn't do was try it with another one, it didn't work for them either. I put the hard drive of my laptop in the PC and it crashes after 10 minutes. What do you think it was?

I used to have graphic errors and games crashed but never that bad.

CPU: Amd 2400 G (did not have a graphics card at first)

Graphics card: RTX 2070 with A chip gigabyte

Motherboard: asrock b350

Ram: 2 × 8 Gb corsair vegeance per rgb

As far as I know there's no Ryzen 2400 without G. There are only boards without the appropriate output. But that's not important either. I think your graphics card has it behind. Try to get any other card and then test it.