Open /etc/default/grub in a text editor of your choice and remove quiet splash.
sudo vi /etc/default/grub
Press insert button on your keyboard.
Remove mentioned words quiet splash
Press Esc button on your keyboard.
Type one by one commands below:
Then remove single using above tutorial and then one more time ...
Single user mode in Ubuntu/Elementary OS
Ubuntu/Elementary OS will drop you into single user mode automatically if it cannot boot normally. To manually enter single user mode, use the following instructions:
From GRUB, press 'e' to edit your boot entry (the Ubuntu entry).
Look for the line that starts with linux, then look for ro
Add single after ro, ...
You can try to run Linux in single mode and get into the system to remove the splash screen from the /etc/default/grub and then you will be able to see what is going on. The splash screen is nice but nonsense, because when there is an issue during the start of the system users are unable to see what is wrong. If you want to do that, let me know and I will ...