I have an eMachines T5246 running Ubuntu 14.04 LTS set up as a home media server with Plex.
Everything has been running well (if slowly) up until today when I installed the updates that showed up in the auto-update and restarted.
When I next booted it up, the screen was completely blank until I moved the mouse, at which point the pointer appeared. I have rebooted several times, and a few times the login screen and wallpaper has appeared, and after logging in, the wallpaper disappeared when I clicked onscreen.
I can boot to other devices. I booted to tails on a usb to see if I could access the files, but I don't remember the Admin password, so I couldn't access the files.
I think that when I first installed ubuntu, the computer had some graphics driver issues, but I believe that was from ubuntu automatically using 3rd party drivers.
What can I do?
UPDATE 1: I have not been able to fix the problem, but I can access the terminal from the login screen using CTRL+ALT+F1
UPDATE 2: I have tried booting using nomodeset, but I got the same screen and reaction when I booted up.