A lot of the < to go back to previous screens simply refuse to work - still.
My way out is to Power Off, wait, Power On, and if I have the same frustrating screen then I Power Off, pull battery, wait, set battery back in (keep back off for duration - in case), and try again. If they don’t already have one, but CTRL - Alt - Del would be handy.
FYI - It doesn’t matter - I have tried gentle tap, harder taps, space between taps, what ever - short of using feathers or hammer to fix this.
~s
and I replace the back.. for it’s safety and my privacy - of course 