I am running an Acer Swift 3 laptop - model SF314-54 (x86_64) - dual boot [ Win10 / Manjaro Linux ]. Grub failed some weeks ago, and it always boots without issue into Linux.
I have lost all sound, and cannot access BIOS via F2 at boot (this should work). I need to enlarge my root partition but cannot get to BIOS so I can force boot from an install disk, then run gparted.
Research I have done suggests that this is a firmware update problem, but I am far from competent in diagnosing such matters.
One suggested solution I found was to remove the CMOS battery, wait 3 minutes, then reinsert it. This, it was said, would force a reinstall of the factory BIOS, and I could go forward from there.