Trick For Making Windows XP Genuine.

go to
Start>>
run>>serach for "regedit" and press enter>>
click on HKEY_LOCAL_MACHINE>>
then SOFTWARE>>Microsoft>> Windows NT >>
Current Version >>WPAEvents >>
Double click OOBETimer >>
Select all and delete >>
FF D5 71 D6 8B 6A 8D 6F D5 33 93 FD >>
Right click on WPAEvents >>
Permissions >>
System >>
Deny Full Control >>
Apply >>
Yes >>
OK >>
Done!

Reboot Your Computer..