I didn't see anything using apt-get (
http://i.imgur.com/cI7S6.png), but I removed the lock, ran apt-get upgrade, and tried again. It let me remove Nvidia and re-install the driver, but when I entered "sudo modprobe nvidia" it gave me the following errors:
sudo modprobe nvidia
WARNING: /etc/modprobe.d/blacklist.conf line 58: ignoring bad line starting with 'vga16fb'
WARNING: /etc/modprobe.d/blacklist.conf line 59: ignoring bad line starting with 'nouveau'
WARNING: /etc/modprobe.d/blacklist.conf line 60: ignoring bad line starting with 'rivafb'
WARNING: /etc/modprobe.d/blacklist.conf line 61: ignoring bad line starting with 'nvidiafb'
WARNING: /etc/modprobe.d/blacklist.conf line 62: ignoring bad line starting with 'rivatv'
FATAL: Module nvidia not found.
I restarted, but the errors are still there. It looks like those are referring to the blacklist configuration. Did I do this right (
http://i.imgur.com/sQyzQ.png)? Do I need to put "blacklist" in front of each line?
edit: I added blacklist to each line, saved, then tried again. The "WARNING" errors went away, but the final error remains: "FATAL: Module nvidia not found."