Reset Administrator’s password in Windows Server 2008 / R2

Step by step to reset Windows 2008 or Windows 2008 R2 edition from console:

1. Insert DVD to server and restart Boot to DVD
2. Select Repair your computer – Choose ‘Use recovery tools that …’ : Choose ‘Windows Server 2008 R2’
3. Command Prompt, type : + X:\Sources; type C: + C:\Dir # Check folders
4. C:\cd Windows + C:\Windows\cd System32
5. C:\Windows\System32\ ren utilman.exe utilman.exe.old
6. C:\Windows\System32\ copy cmd.exe utilman.exe
7. C:\Windows\System32\ Shutdown -r -t 0
8. Click ‘Ease of access’ after the GUI boot is completed
9. C:\Windows\System32\ net user Administrator abc@123 # Set new password is abc@123
10. Logon using new password

You’re done.

Ref:
https://support.hpe.com/hpesc/public/docDisplay?docId=emr_na-c03476650