My specs
CPU : AMD Phenom II x6 1090t
GPU : AMD Radeon r7 370 2gb
RAM : 8gb DDR3

dada666 Any help? I really wanna stay on Linux!

This forum is a great place for solving problems like yours, but it would help to know which desktop environment you're using. E.g., Budgie, Plasma, MATE, etc.

      dada666 I'm no expert, but strange artifacts on the screen normally mean a problem with your gpu, and since the problem persists across two different distros it definitely sounds more hardware related than software.

      If while your computer is booting up you continuously press f12 key over and over again are you able to get into your bios? Or is there just no signal going to the display at all?

      Do you have a second graphics card you could try hot swapping in if you have to?

          I also think it might be a hardware issue. this sounds a lot like what my last graphics card did when it was failing - it would be fine for a while, but as it heated up under load it would eventually start displaying corrupt graphics and crash the system.

          how long ago did you switch from Windows 10 and were you having any issues then?

            To rule out a hardware problem, I would try the Solus live stick to see if the problem is there

              synth-ruiner I switched to Linux last week and I had one problem where the system was not booting because lightdm failed to start.

                dada666 the live usb also doesnt work unless I add nommodeset

                when you initially installed Solus, did you have to do "nomodeset"? or is this something that's recently started happening?

                    dada666 Does Windows still work? If not it's a bad GPU, everything currently points to the GPU being defective. When using 'nomodeset' it disables GPU hardware acceleration.

                    Max_The_Bear Having to use nomodeset indicates it maybe a hardware issue.