Where to tear down video drivers in Ubuntu 16.04?

Question

linux

They bought me a new vidyashka for the 2nd monitor today. Ah, how I waited. Vidyakh GT630. She has 2 DVI inputs, I have 2 VGA monitors. I took adapters, installed everything, everything ran. Only infa about monitors did not grab. The resolution of both was set to square-stained. I installed the proprietary nvidia 304 drivers (thinking it would fix the problem), but after a reboot, ubunta wouldn't let me in at all. At what even under the guest.
I enter the password, enter ... parasec, black screen, and again a welcome window with a password.
I suppose it is necessary to demolish the 304 firewood nafig, but I just don’t know where they were put, because I install it from the gui of the "programs and updates" settings section.

Answer 1

Ctrl-Alt-F1
login
password
sudo apt-get remove nvidia*