Recently my PC cannot shutdown (Ubuntu 16.04). Each time I have to turn it off manually using the on/off button on the computer. Restart works fine.
When I try shutting down the usual way, the screen remains blocked as it will shut down in a few seconds. A violet screen with a little Central "ubuntu" word with 5 dots below it, four lit red, one lit white. Running
sudo init 0 and
sudo shutdown now have the same result.
However, I can restart and open the PC with Windows 7 and then shutdown regularly. What should I do?