Lost files in Windows 10, but only in one folder tree and timestamped after specific date?

Solution 1:

My daughter's computer has two disks: C and D. Windows installed on C. Some apps installed on D instead of C due to limited space on C.

Splitting Windows into two drives often causes issues.

So three things:

(A) In this case, the Reset ignored Drive D: because it was not looking for it as a source for Windows Apps or even data if not looking to see Windows data on another drive. It depends, but I never saw it as safe.

Always have a good backup.

(B) Better for the long term to install a bigger HDD or SSD drive in the laptop so that Windows and all regular data goes on Drive C: Make sure data stored on another drive is always backed up.

(C) A Windows 10 Repair Install and Keep Everything (using one Windows drive for Programs and Apps) is a much safer way to repair issues.

I have seen a number of cases like this.