Reset Windows 7/10 password with Windows 10 DVD/USB Media > only use if you have forgotten your password or do not have your Microsoft account info

Follow the steps to reset your Window 7/10 password:

• Boot from the Windows 10 DVD or USB Media. Make Sure to change your boot order.
  
  Boot from Windows 10 DVD
• Press SHIFT + F10 to open a command prompt.

• Replace the file utilman.exe with cmd.exe. You should probably make a copy of utilman.exe – if you like, so that you can restore it later. Windows 10 is usually installed on drive D: if you boot from a DVD. You can verify this with “directory d:\windows\system32\utilman.exe.” If the system cannot find utilman.exe, try other drive letters.

1. 1. 2 move d:\windows\system32\utilman.exe d:\windows\system32\utilman.exe.bak
      copy d:\windows\system32\cmd.exe d:\windows\system32\utilman.exe
      Replace utilman.exe with cmd.exe
      

• After you have replaced utilman.exe successfully, you can remove the DVD and restart your problematic Windows 10 installation:

1. 1 wpeutil reboot
   
   Reboot Windows 10

• On the Windows 10 sign-in page, click the Utility Manager icon.
  
  Click Utility Manager icon
  
  We replaced the Utility Manager with the cmd.exe, a command prompt should open now instead of the Utility Manager

Command prompt

• You can now add a new user with the command below. We also have to add the user to the administrator group (has full rights to computer). Replace username with the account name of you would like to use. Pick a NEW account name.

net user <user-name> /add
net localgroup administrators <user-name> /add

Now add the user to the local administrators group

• Your account should show up, and you can sign in without a password. Reboot if needed.

Let me know if you have any questions or issues with the steps and I will be glad to help and assist - where need be...