I was trying to install a driver and I needed to access something in the Terminal. It was a driver for a NVidia GeForce 8400GS. I needed to type in "sudo -s" and then type in my password. The problem is that the Terminal refuses to allow me to type any letter or number at that point. I can still press enter, control, alt, shift, whatever. But not any letter or number. I can't past into the field either.

I am used iAtkos v5i to convert my computer, so how can I fix this? Can I at all? Is there another way to get the driver without doing this?

Thank you ahead of time.