This might be an appropriate time to bring up the subject of “BACKUPS”.
A simple and tested disk or partition backup may negate the need to reload windows and/or MSFS.
Do it… Test It… It works. Do a full backup followed by Weekly Differential backups to give yourself a fallback point to restore your system in event of boot failure or just total catastrophe.
I maintain 2 Full/Differential backups and a Cloned Disk … Spinning disks are cheap these days.
Do yourself a HUGE favor and create yourself a TESTED backup.