How to change Windows XP lincence without re-installing


My friends office have a few PC's which they bought from a "used PC seller" all of them are non-branded but had Windows XP installed, but the licnece were not original.

Now my friend bought Windows XP OEM package with licences, and wants to knwo how to change the XP licence without re-installing the whole OS again.

please help
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.


This is the location of the registry key in windows 98, do a similar path search in XP to find the product key on the right of the screen and then change the key.


Luc FrankenEMEA Server EngineerCommented:

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
I can't get to those links from here LucF, so if this is the same information as in those links forgive me :P
And its_sree, if you use this information, but it is in LucF's links make sure the points go to LucF.

1. Run regedit and go to: HKey_Local_Machine\Software\Microsoft\WindowsNT\Current Version\WPAEvents, on the right double click on "oobetimer" and change at least one digit of this value to deactivate windows.
2. Choose run from start menu and type in this command:
%systemroot%\system32\oobe\msoobe.exe /a to get the activation screen and go to the second option which is activate by phone.
3. In the new screen choose the option to change product key, and type in the new product key.
4. Close that window, reboot your system and enter the command in step 2 for the second time to verify your activation , you should see "windows is already activated".
10 Tips to Protect Your Business from Ransomware

Did you know that ransomware is the most widespread, destructive malware in the world today? It accounts for 39% of all security breaches, with ransomware gangsters projected to make $11.5B in profits from online extortion by 2019.

Luc FrankenEMEA Server EngineerCommented:
no it's not the same information that's on the links I posted, my links have a little program that do all the work for you (so it's easier for inexperienced people, because they then don't have to use the registry editor)

Easier is good :)
Luc FrankenEMEA Server EngineerCommented:
its_sreeAuthor Commented:
hey guys, I will try this out this evening and let you know, thansk for the help

Luc FrankenEMEA Server EngineerCommented:
Ok, let us know how it goes..
This old question needs to be finalized -- accept an answer, split points, or get a refund.  For information on your options, please click here-> http:/help/closing.jsp#1 
Post your closing recommendations!  No comment means you don't care.
Luc FrankenEMEA Server EngineerCommented:
Recommendation: answered by LucF
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows XP

From novice to tech pro — start learning today.