Monty wrote:

Just do a restore from your last backup - assuming that you do regular
backups on, say, a weekly basis.

If it were that easy, we'd not be discussing this.

http://wetakepic.com/images/2018/02/24/restore_gui.jpg

A reversal to a previous restore point is the very first thing I tried and
that Microsoft Tier 2 Phone Tech Support tried - particularly because I
used "Restore Point Creator" software to manage the restore points - but
the recovery console won't find them.