Summarize:

If you have access to an administrator account on your computer but you don't have the password for a specific local account (not a Microsoft account), you can log into the administrator account and change the other account's password from Control Panel. Click the Windows logo in the bottom-left corner of the screen. Type in control panel, then click Control Panel in the search results. This heading should be on the right half of the Control Panel window. Doing so opens your user account page. If clicking User Accounts opens another page with User Accounts listed at the top of the window, click User Accounts there. It's a link below your profile picture. This will bring up a list of local accounts, one of which should be the account for which you want to change the password. Click the account for which you want to change the password. It's to the left of the account's current profile window. Type your new password into both the "New password" and the "Confirm new password" text boxes. You can also add a password hint in the "Type a password hint" text box. This may help you remember the password in the future. It's below the profile window. Doing so will reset the password for your local account, allowing you to log in with your new password the next time you restart your computer.
Understand when you can use this method. Open Start . Open Control Panel. Click User Accounts. Click Manage another account. Select your local account. Click Change the password. Enter a new password. Click Change password.