FoLLow Steps

1. Goto "start"

2. Run-type in "regedit"

3. Goto "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\WPAEvents" 

4. choose "oobe timer" in the right side panel and double click

5. in the window,delete all the things.

6. close regedit

7. goto start-run-type in "%systemroot%\system32\oobe\msoobe.exe /a"

8. choose the second option "use phone to activate"

9. click "change product key"

10. type in the serial:thmpv-77d6f-94376-8hgkg-vrdrq

11. click "update"

12. click"remember later"

13. after that restart the computer

14. after restart goto start-run-type in "%systemroot%\system32 \oobe\msoobe.exe /a"

15. it should come up with a message"windows activated"- finished!