I've tried to log in safe mode. Now it works fine, but if I log into normal mode, it works bad.
I've been looking for the problem and I realised that when i'm in safe mode the graphic card is NVIDIA; and when I am in normal mode the graphic card is INTEL.
So the problem is that the INTEL graphic card doesn't work.
I would like to know what can I do if I want that my laptop (when starts in normal mode) starts with NVIDIA graphic card.
PLEASE HELP ME AND GIVE ME ADVICE.