Windows 10: Can I use license key from old laptop, even if its "OA" ?

  1.    3 Weeks Ago #1

    Can I use license key from old laptop, even if its "OA" ?


    I have a broken old laptop.
    However, it does have one useful thing: a Win7 license key.
    Can I use this key to install Win7 on a desktop and upgrade to Win10?

    The laptop authenticity sticker on the underside says its "Home Premium OA" and OA I think means its already activated. So I wonder if I have to "deactivate" it first before activating again?
      My ComputerSystem Spec


  2. Posts : 875
    W10 pro x86 and Vista x86
       3 Weeks Ago #2

    I don't think so. OA I believe simply means it is a factory OEM (Original Equipment Manufacturer) installation and that means the license key is only valid for that PC. If you attempt to use it then you will just get a failure notice as the key is already in use.
      My ComputerSystem Spec

  3.    3 Weeks Ago #3

    Strictly no but Windows 10 is amazingly lenient about such things. Worth a try.
      My ComputerSystem Spec

  4.    3 Weeks Ago #4

    I just read somewhere that I have to deactivate a Windows license key, and only then can I re-use it.
    slmgr /upk [your-windows-key]

    https://www.howtogeek.com/124286/how-to-uninstall-your-windows-product-key-before-you-sell-your-pc/
      My ComputerSystem Spec

  5.    3 Weeks Ago #5

    Bansaw said: View Post
    I just read somewhere that I have to deactivate a Windows license key, and only then can I re-use it.
    [FONT=monospace]slmgr /upk [your-windows-key]
    Doesn't apply to OEM as you can't reuse it anyway and in any case if the laptop is broken you'll not be able to do it.

    You could try installing 10 and entering your 7 key (you don't have to install 7 and upgrade). It will either work or not. If it doesn't work you could try telephone activation, tell them it is only installed on one computer and see what they say. As @cereberus said according to the license you can't do this but there is nothing wrong with trying.
      My ComputerSystem Spec


  6. Posts : 3,519
    Win10 Home and Pro, Win10 Insider Preview, Win7 Home, Linux Mint
       3 Weeks Ago #6

    OA simply means it's an OEM Activated Product Key. From Win7 back, most times a Key from one brand was prohibited from installing on a different brand, especially when using a CD for installing. As mentioned, Win10 changes things.
      My ComputerSystem Spec

  7.    3 Weeks Ago #7

    Bansaw said: View Post
    I just read somewhere that I have to deactivate a Windows license key, and only then can I re-use it.
    slmgr /upk [your-windows-key]
    Pure myth. slmgr /upk only removes the product key from the local computer. It has absolutely no affect on the activation or digital license stored on Microsoft Activation Servers.
      My ComputerSystem Spec

  8.    3 Weeks Ago #8

    NavyLCDR said: View Post
    Pure myth. slmgr /upk only removes the product key from the local computer. It has absolutely no affect on the activation or digital license stored on Microsoft Activation Servers.
    Bingo. Exactly.
      My ComputerSystem Spec

  9.    3 Weeks Ago #9

    Berton said: View Post
    OA simply means it's an OEM Activated Product Key. From Win7 back, most times a Key from one brand was prohibited from installing on a different brand, especially when using a CD for installing. As mentioned, Win10 changes things.
    Factory Windows 7 OEM installs use a Generic OEM key. Dell has their keys, Acer theirs, etc. As an example every Dell with Windows 7 Home Premium will have the same Dell key. Those PC's don't activate online, they activate against a SLIC table in the BIOS. Use a Dell OEM disk on an Acer and the SLIC table won't match, no activation. No SLIC table means no activation too. Those generic OEM keys are also blocked from online activation. Windows 10 won't activate with them either. That being said, that generic OEM key is not the key printed on the COA sticker. That key is unique and its there for use with stock Windows 7 install media. I've had to do a phone activation when using them though. According to the EULA, OEM keys/installs are not transferable.
      My ComputerSystem Spec


 

Related Threads
Hi I have recently updated to the creator version My files end up in unintended destinations. When I click in the documents tab in the sidebar of the documents screen, it takes me to a “Documents” folder that appears in “One Drive” group. Any...
One of our Win10 laptops has a context menu with "Properties" that uses shortcut key "r". The other uses key "o" which conflicts with "open". I have no idea how it got corrupted. Suggested locations in the registry for context menu doesn't list it....
A few months ago I upgraded my Windows 7 Pro to Windows 10 Pro via the free upgrade promotion. For the first few months I experienced absolutely zero problems. A few days ago, the "Activate Windows" watermark appeared on my screen. Upon checking my...
After doing the upgrade from Windows 10 Education 1511 to 1607, Settings > Update & security > Activation, switched from "activated with a product key" to Activated with a Digital License". Activation has changed with the upgrade to 1607. To...
Loading Dump File Kernel Bitmap Dump File: Kernel address space is available, User address space may not be available. ************* Symbol Path validation summary ************** Response Time (ms) Location...
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 21:53.
Find Us