I have a single boot Acer laptop where I performed a clean installation of Ubuntu.
After boot it shows a bootable device not found error.
I tried running boot-repair and when it finishes it says that repair was successful, but the error persists.
The laptop did not have any operating system previously installed on it.
I also tried to deactivate UEFI, but the desktop would not load correctly making it impossible to install.
Any ideas on how to fix it?