Try a system restore.
WILL TRY AFTER SOME MORE KIND COMMENTS FROM YOU, PLEASE. SEE BELOW.
This is not a restore of the operating system which at this time is OTT.
COULD YOU KINDLY CLARIFY TO THIS SENIOR+ WHAT DO YOU MEAN BY THIS.
Hope you have your photos and documents backed up.
THIS IS OK - THEY ARE ON AN ADDITIONAL SEPARATE DISC STATION.