How to reset windows 10 password without losing data?

 If your computer has multiple accounts and you still remember the passwords of other administrator accounts, you can reset the passwords through other accounts:

1. Log in to other administrator accounts.
2. Press Win + X and select "Computer Management".
3. In "Local Users and Groups" on the left, click "Users".
4. Find your user name, right-click it, and select "Set Password".
5. Enter the new password, confirm it, and then log in to your administrator account with the new password.

I hope these three methods will help you, and the data on your C drive will not be affected when resetting Windows 10 password without losing data. Wish you good luck!