Today I started my PC and I saw that my screen was black. Tried some stuff and said "Oh whatever I'll just install again."

But the problem persist through my original installation of Ubuntu 18.04 LTS, Kubuntu 18.04 LTS and Kubuntu 20.04 LTS. I installed Ubuntu 18.04 LTS again and it's still the same.

When I try to login to my desktop environment, doesn't matter the login manager (Tried sddm, lightdm, gdm3 and a bunch more) It just goes black for a second and login prompt comes back again. Same with tty prompts. I enter my user name and password but it seems like it's going to login for a second, but spits me back out to default tty login page.

And I know that I enter the correct credentials too. When i enter wrong password it just says wrong password or something. But when I write the correct one it just loops endlessly. I've never got a problem where I couldn't at least login to tty.