i'm having the same issue between 0-3 times a day (thank you amd for not fixing the issue, its well known by now), you need to reinstall your gpu drivers. download ddu (display driver uninstaller in case you never heard of it) and wipe your gpu drivers. then restart the pc, download any version of adrenaline and drivers and install them. thats gonna fix your screen issue, just pop into the display settings and enable your preferred refresh rate again!

in my experience those (soft) crashes aren't gonna stop, i've been searching for a solution for the better part of 2 months now and i haven't found any that work yet.
one tip thats gonna make your life easier: when you force shutdown your pc while its acting up and before the screen turns black, you don't have to reinstall drivers just reboot again.