HELP! Photoshop shows black screen and no files work anymore???

Here is a picture of what happens once I open a file or make a new one. Before I open anything, PS works just as usual, but just when I open a file or make a new one, the screen looks like this:

The weird thing is, the whole screen looks like this but I can still click on the (invisble) tools etc and they work...

I already:
- deinstalled and reinstalled PS
- emptied my system memory
- renamed the PS folder (as recommendet by Adobe support)
- updated PS and my graphic card to the newest versions
- made a new User, made it administrator and tried PS there but the same problem appears
- turned the laptop on and off (yes, also inbetween installing and deinstalling etc.)

It worked just fine yesterday and then I closed the file for an hour to get me some dinner and when I reopened it EVERY file I tried to open looked like this.
Support seems to just give me the solutions which you can already find online with google and neither of them could help me.
Does anyone have a solution? 😞