I have just bought a Dell "Inspiron 15 3552U" with Ubuntu 14.04 pre-installed. I made all the software update, and the system now proposes me to upgrade to Ubuntu 15.10. My goal is to have the last version 16.04 in the end.
I try to launch the upgrade simply by accepting it when the system proposes from the desktop or the software update manager. My computer doing the rest...
I manage to download all packages, but I get a black screen during the installation (more or less in the middle of the process).
My question is therefore: should I wait and my computer will wake up with a brand new version of Ubuntu one day? Should I force the shut down and press the power button? I know this is not the solution. Last time I tried, I had to restore the factory settings to be able use my computer again. Ubuntu was not launching and I got something like the Ubuntu terminal with commands to enter.
I am totally new with Ubuntu, so any help and guidance would be very welcome.
Many thanks for your help,