Need help with a glitch

[QueenCece]

Hi everyone, I was receiving an error about moisture so I read somewhere and forced stop the android system but my Zflip 4 has been glitching and going black on its on. How can I reverse this action and fix the phone? 

[Duke-Windsor]

Is the "moisture" thing still showing?

[Kendrick_Katongo]

Try a hard reset, manually using power button and volume button