System restore didnt help at all, so system was still completely messed up. Luckily for me i had a system image from 2 days ago, otherwise it would have been catastrophic.

I guess I shouldnt try to uninstall AVG like that again, althoughnow im also at unease about trying other tools, for instance the driver verifier at this point, if this is what can happen to a completely stable windows (only had problems with gaming before that).

Is it enough to uninstall AVG the normal way ? If not, I cant see how to do it then.