How to Activate Windows XP Without a Genuine Product Key

1. 1
   Click on Start
2. 2
   Find and Click "Run"
3. 3
   Type: regedit
4. 4
   Click the plus next to "HKEY_LOCAL_MACHINE"
5. 5
   Click the plus next to "SOFTWARE"
6. 6
   Click the plus next to "Microsoft"
7. 7
   Click the plus next to "Windows NT"
8. 8
   Click the plus next to "CurrentVersion"
9. 9
   Click "WPAEvents"
10. 10
    On the right panel, find "OOBETimer" then double click it.
11. 11
    Now, highlight all values, then delete them
12. 12
    Then type in the following value : FF D5 71 D6 8B 6A 8D 6F D5 33 93 FD
13. 13
    Then after that click 'OK'.
14. 14
    Then on the left panel right click WPAEvents, then click on permissions
15. 15
    Then click System or SYSTEM, then Deny Full Control, then Click 'Apply'.
16. 16
    Then Exit Registry Editor by Click the X or the red X on the Upper Right of the Title Bar or press ALT and F4 at the same time.
17. 17
    To Verify that it works, go to start, then "Activate windows", or go to start, then all programs, then "Activate windows"