Windows key updating tool
Note: Changes to the Windows Registry are made in these steps.
After a couple of years, two of the computers reported that XP was not genuine.
I purchased several IBM computers from a corporation.
The IT Department must have used a VLK version of XP to restore the operating system.
I recommend that you backup the registry keys you're changing in these steps as an extra precaution.
If you're uncomfortable making registry changes, check out the tips at the bottom of the page. Try my Step by Step Guide to Changing the Windows XP Product Key for an easy walk-through!