I have a Dell Inspiron 15 7559, which comes with ubuntu 14.04 LTS pre-installed.
After updating, the software update application gave an error indicating something wrong with my laptop with two options available: update or partial update for as many updates as possible. Running sudo apt-get dist-uprade
fixed the issue.
Then I upgraded the Ubuntu to 16.04 LTS. Everything went well but until the installation rebooted and froze at the splash screen saying 'ubuntu....' .
I am new to Ubuntu, so could you please provide answers in a step-by-step manner?