I had Ubuntu 14.04 running on my Dell Vostro. I started upgrading it through the update manager. It downloaded all the required packages, installed them and (probably) restarted.
When I checked back after about 30 minutes, I was at the login screen. I entered my username and password and since then it's stuck at a black screen with the blinking cursor.
No keys are working except for the power button - which simply switches off the computer after showing a bunch of "stopped xxxxxxxxx" scripts.
Sorry as I couldn't add more details. This is what all I could post through my phone.
Here's what the otherwise empty screen shows before shutting down when I press the power button:
After leaving for about 30 minutes, it shows me this:
And it remains here forever.
2 Answers
I propose first to burn an ISO-CD and run Ubuntu in Test Mode in a ramdisk. Here we (maybe) see if generally the thing works. Upgrade to 16.04-64?
Couldn't figure out what to do. So, as the last option, I made a bootable USB for 14.04, logged in through it and copied all my important files to an external hard drive.
After that, I installed 14.04, erasing everything that was there earlier.
