Sure I will help you my friend. Follow the steps carefully.
1. Write this Product Key Down: - JG28K-H9Q7X-BH6W4-3PDCQ-6XBFJ
2. Go to Run -> Type in "Regedit" without quotes.
3. A screen would pop up. Expand My Computer (Normally its already expanded).
4. Expand HKEY_LOCAL_MACHINE
5. Expand Software
6. Scroll slowly till you find "Microsoft". Then Expand Microsoft.
7. Scroll down, find Windows NT and Expand it.
8. Expand Current Version.
9. Scroll down till you find WPA Events.
10. On the right you will see OOBETimer. Double Click it.
11. There would be a value data given. Just delete the last string. Delete only one or else it won't work. i.e y.
12. After editing click OK, close Regedit.
13. Once again go to Run. Type in "oobe/msoobe /a" Without quotes.
14. Windows activation screen would appear.
15. Select this: Yes, I want to telephone a customer service representative to activate Windows.
16. Click Next. Then look down. You will see a button named "Change Product Key". Click on it.
17. Add the product key I gave you above. Finally Click Update.
18. After Update is finish, it will take you to the Change Product Key page. Just Close that Windows Activation window and restart your computer.
19. After reboot, your computer is a Genuine Microsoft Windows XP.