Hello, I have a problem with Krita.
My krita layer is all black! I don't know how to undo it, but it's all black, nothing works in there, it's kinda scary, I tried to re-install but nothing! Help?
I tried to paint there with white, nothing. I changed the configurations, nothing. Help.

If you're using an Intel graphics card (which is very likely if you're using a laptop), update your display drivers. Intel's display drivers were buggy, so you need the most recent version.