There have been reports in the past about problems accessing the bios, I found 2 (both acer machines):
Check for a BIOS update, when that machine is running again.
As to this problem, first boot into single user session without graphics:
- press esc (repeatedly) on boot to access grub menu
- press e to edit the current boot entry
- edit the line starting with
linux /boot/vmlinuz... and append a (literal) 3 to it (separated by a space)
- press f10 to boot the adjusted entry
That should boot up the machine in single user mode, where you can undo your actions:
- remove the non-fitting/-working graphics driver:
$ sudo mhwd -r pci video-nvidia
- re-install the previously working one
$ sudo mhwd -i pci video-hybrid-intel-nvidia-prime
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