When you come up with the error unable to complete the installation
Hit SHIFT-F10 to bring up command prompt. Type MMC and hit enter Click File -> Add/Remove Snap-in... (Or CTRL+M) Select Computer Management (Double click and Finish on Local Computer) Click OK Double click Computer Management (Local) -> System Tools -> Local Users and Groups -> Users -> Double Click Administrator -> Uncheck Account is disabled -> OK Now right click Administrator -> Set Password... -> Set a decent password to get started.
Restart and if it still doesn’t work then try this:
SHIFT-F10 to bring up command prompt. Type: CD C:\windows\system32\oobe Type msoobe and hit Enter Make a generic account and password. Hit finish (if it requests a product key and you have one, enter it now. If OEM/No key required, just finish). Set time/date. Finish. Restart.