Today when i turned on my laptop. I got nothing but a blank screen. Where all the icons were not visible. I was able to open only externally downloaded apps like vlc, browsers etc that too by guessing their icons location. Even terminal was not opening

Today when i turned on my laptop. I got nothing but a blank screen. Where all the icons were not visible. I was able to open only externally downloaded apps like vlc, browsers etc that too by guessing their icons location. Even terminal was not opening. Neither files nor setting.
Please help



Have you received any updates lately before shutting down your laptop?
What specs are your system?

Yes i was updating it(upgrade). But i was in rush ,so had to shut down on 75%

The obvious fix for this is save what you can then do a clean install.

It may has cause corruption of the packages/files.
ctrl+alt+F4

sudo dpkg --configure -a
sudo apt update && sudo apt upgrade
sudo reboot

It is continuously showing login incorrect. Can you pls guide me how to retrieve my username?