If you choose to install the system again, please provide the installer log before you reboot.
It may give us more clues.
Provide Installer Logs (calamares ISO LiveSession):
While you are still on the ISO Live Session logs are stored inside livusers home:
/home/liveuser/endeavour-install.logYou can open with text editor or from file browser, or send via tools (needs internet connection):
cat ~/endeavour-install.log | eos-sendlog