Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I would like to deactivate the copy of Windows 8 Pro that I have installed on my system because one of cousins attempted on Install windows from the same disk and activated with same key. So, I would like to buy a new product for it. Do I need reinstall it over again?

share|improve this question
possible duplicate of Change the Windows 8 product key after installation? – Ƭᴇcʜιᴇ007 Jun 18 '13 at 4:02

Press the Win key, then type Run and press Enter. Type slmgr.vbs -upk, and click OK

It should deactivate the license and get you into trial, from there you can reactivate using another license

share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .