Method 1: Using Ctrl + Alt + Delete

  1. Press CTRL + ALT + DELETE simultaneously.
  2. Select Change a password.
  3. Type your old password.
  4. Type your new desired password and re-type to confirm it.
  5. Press Enter.

Method 2: From Settings

  1. Click Windows key.
  2. On the left side, click the account icon.
  3. Click Change Account Settings

Image

  

  3.Select Sign-in options.

Image

4. Start setting or changing the password, PIN, or picture password.

After doing so, try signing out then signing in again using your new password.