deactivate windows 7 in order to reinstall on another PC

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  1. Posts : 1
    Windows 7 Professional 64-bit
       #1

    deactivate windows 7 in order to reinstall on another PC


    Hello,
    I have a Toshiba laptop that came with Win 7 Home premium 64-bit. I installed Win 7 Pro 64-bit on top of Home Premium. Now I want to but a new laptop and move Win 7 Pro to the new laptop. Do I have to deactivate the Win 7 Pro? If so how do I do that?
      My Computer


  2. Posts : 17,796
    Windows 10, Home Clean Install
       #2

    Welcome
    You must uninstall Pro by installing another OS over it or format it
    Then just install in the new computer.
    You can install as many times as you like but one computer at a time.
      My Computer


  3. Posts : 2,606
    Windows 7 Pro X64 SP1
       #3

    There is no explicit deactivation.

    You are supposed to uninstall it from the first machine before installing it on the second. You may have to activate the new installation by telephone, as the key is already in use.

    I have read claims that if you activate a second machine with the key and connect the old machine to the net, the installation on the old machine will be marked as not genuine. I'm fairly sure that was false in the XP days, but I don't know about with Win7.
    Last edited by bobkn; 13 Jun 2011 at 21:38. Reason: typo
      My Computer


  4. Posts : 11,408
    ME/XP/Vista/Win7
       #4

    How to use Toshiba Recovery.
    How to use the Toshiba HDD Recovery Utility

    You can order Toshiba Recovery disks from here:
    https://www.csd.toshiba.com/cgi-bin/...rification.jsp
      My Computer


  5. Posts : 4,466
    Windows 10 Education 64 bit
       #5

    You can deactivate windows 7 > Product Key Number - Uninstall and Deactivate in Windows
    I'm not sure there is any real advantage to doing it in this case though. You can have a look and make up your own mind though. Maybe do the above and then try this. > UNAWAVE - Downgrade Ultimate to Home Premium or Professional
      My Computer


  6. Posts : 22,814
    W 7 64-bit Ultimate
       #6

    Hello whyld4900, welcome to Seven Forums!



    The way to deactivate an activation key is to type slmgr -upk into an elevated command window, have a look at the snip below, be sure that you don't do it until you are ready as it will make Windows non-genuine at the next reboot.


    click to enlarge
    deactivate windows 7 in order to reinstall on another PC-uninstallkey.jpg
    Edit: Now I see the tutorial was posted above.
    Last edited by Bare Foot Kid; 14 Jun 2011 at 11:14. Reason: Edit!
      My Computer

  7.    #7

    I would try alpha's downgrade workaround to change from Ultimate to Home Premium, then at Computer>Properties change the Product Key back to the Home Premium key on the COA sticker which came with the computer.

    If you plan to sell the laptop, I'd also consider running the Recovery Disks to set it back to factory conditions with all the utilties (and bloatware) that came with it.
      My Computer


  8. Posts : 2,606
    Windows 7 Pro X64 SP1
       #8

    alphanumeric said:
    Correct me if I'm wrong, but this deactivates Win7 on the local machine. It does not reset the Microsoft activation server and free up the license key. There's not much point in doing this.
      My Computer


  9. Posts : 22,814
    W 7 64-bit Ultimate
       #9

    bobkn said:
    alphanumeric said:
    Correct me if I'm wrong, but this deactivates Win7 on the local machine. It does not reset the Microsoft activation server and free up the license key. There's not much point in doing this.
    Bare Foot Kid said:
    Hello whyld4900, welcome to Seven Forums!

    The way to deactivate an activation key is to type slmgr -upk into an elevated command window, have a look at the snip below, be sure that you don't do it until you are ready as it will make Windows non-genuine at the next reboot.

    click to enlarge
    deactivate windows 7 in order to reinstall on another PC-uninstallkey.jpg
    Edit: Now I see the tutorial was posted above.
    It must free up the key at the servers if it does this.
      My Computer


  10. Posts : 31,242
    Windows 11 Pro x64 [Latest Release and Release Preview]
       #10

    I can confirm that the licence server must be updated, as the copy of win7 will fail the next licence check and present the black screen and not genuine message
      My Computers


 
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