Windows 10: Product key won't work when I try to install Windows 10

  1.    27 Sep 2015 #1

    Product key won't work when I try to install Windows 10

    Alright, so I need help with a laptop I bought but first some info.
    I went to a pawn shop and got a used Windows 10 home laptop. It worked, it was great, I went home to use it. It's 64 bit. However, I decided to factory reset it, just in case. It was going well, so I left it so it could reset. When I came back to it, it had failed, and my computer was left in a constant blue screen of death restarting sequence. After a few hours of looking up fixes, I figured it out. I used the media creation tool to download Windows 10 using a different computer onto a USB. I booted it up, and my computer was fixed. Except, I had accidentally chosen the 32 bit option, so now my computer says '32 bit with a 64x based processor'. I tried to just install the media creation tool again, but 64 bit, but it wouldn't let me. I needed to insert the product key. I found it, but it won't accept it. After a while I gave up and just went back to 32 bit. However, I would really like to upgrade to 64 bit, which is why I'm still looking for a solution. I learned that the laptop was at first Windows 7, but there wasn't an option to downgrade in the updates and security settings section. If you need more information to help me, I'd be glad to elaborate
      My ComputerSystem Spec

  2. topgundcp's Avatar
    Posts : 2,438
    Ubuntu14.04x64 MintMate17x64 Win10Prox64
       27 Sep 2015 #2

    Since Windows 10 was already activated. Just wipe the disk and re-install X64. select Skip or Do it Later when asked for product key.
      My ComputerSystem Spec

  3.    27 Sep 2015 #3

    topgundcp said: View Post
    Since Windows 10 was already activated. Just wipe the disk and re-install X64. select Skip or Do it Later when asked.
    That's the thing, either it was never activated or the factory reset somehow messed it up. If I try to skip it, it'll restart the boot.
      My ComputerSystem Spec

  4.    27 Sep 2015 #4

    Toxiconym said: View Post
    That's the thing, either it was never activated or the factory reset somehow messed it up. If I try to skip it, it'll restart the boot.
    1. Run the Media Creation Tool for the same bit level that the OS is that you are running it on. If your OS that you are on is 32 bit, then run the 32 bit Media Creation Tool. If your OS that you are on is 64 bit, then run the 64 bit Media Creation Tool.

    2. Using the MCT, download the Windows 10 ISO that you want to install - it does not have to match your current bit level. Make sure you download the exact same version that you want to replace, as in Home, Pro, N or Single Language - but you can pick the desired bit level 32bit or 64bit.

    3. Boot the computer that you want to repair from the USB or DVD. Click Install Now, then select custom install.

    4. Delete all the partitions listed on the hard drive so you are left with only 1 big unallocated space. Select the unallocated space to install to and let Windows install do it's thing.

    5. When asked for a product key, click "skip" or "do this later". Might have to do that 2 or 3 times at different times during the install.

    If Windows 10 won't install, there is something else wrong than just not having a product key. If you install a version of Windows 10 that was not activated on that same computer previously, the issue you will have is that Windows 10 will install - but it won't activate itself.
      My ComputerSystem Spec

  5. Posts : 964
    dual boot W10 10586th2/14291 rs1 Win. Insider since Jan. 2015
       27 Sep 2015 #5

    You can roll in the 64 bit OS as described above i.e. custom install ..( Then acivate Windows 10 anytime ) as long as your PC was previouly activated on Win 10 .

    Long way (but ensures activation ) only if your win 10 install was never activated or it was a test build .

    Use the win 7 product key and downlad Win 7x64 (whatever kind it had ) from M.S. then you can install *that * and go on line and activate it with the product key then roll in win 10 x 64 from the installer tool and it should activate itself when you go on line or you can force it .

    i.e. AFAIK a Windows 7 product key wont work in windows 10 at all except during the in place upgrade or first time clean install to W10 RTM then win 10 eats the win 7 key .

    Keep in mind on a custom (clean) install you will loose your files and installed software outside of what comes in Windows
    (not much ) .

    Another option is to order factory recovery media if you want the bloat and whatever came with it software wise if it was never activated in win 10 rol that in ,then update * that OS * .to win 10 .

    Note : you will likley need to downlod and install your specific PC HDWE drivers including sound ,video and wireless etc. *outside of a bios ,chipset or any controllers * from the mfr. and or vendors on a *clean install ....*outside of OEM recovery media* and install those drivers *after you install Windows *

    If it wont activate (after you install it ) call ms and explain your situation and maybe must be on line to activate Windows 10 anyway just like before you shouldent need a product key on Windows 10 * if it was activated on that PC allredy*

    I've done 2 Windows 10 RTM upgrades , a clean install RTM and a few clean installs and auto updates on the test builds and more windows installs than I can remebmber going back to Windows 3.0

    If the ( correct version of Windows 10 ) in relation to your media was activated on *that* PC at any time it should work fine (the profile for activating Windows 10) is stored at MS once it's been activated and you must be on line to activate windows 10 or any of them anyway .

    In the unlikey event all the above fails Assuming your PC had a genuine OEM upgrade to RTM You can also call Microsoft cust service they can look up your Windows 7 product key and tell you if it has been used ,if it is still valid on Win 7 x64 or de activated (as would happen in a Win 7 or win 8 upgrade to RTM when it gets eaten ) but try the clean [custom install ] from media as described above first ,LCDR knows his stuff .
    Last edited by blutos cousin; 27 Sep 2015 at 15:33.
      My ComputerSystem Spec


Related Threads
Hi Guys A few questions.... Could someone please clarify, Will windows 10 update provide a product key for clean install? If so how/where? If not when performing a clean install, will skipping the product key prompt, then activating once...
I have a Lenovo S21E-20. I purchased machine new, it came with 8.1 loaded and as soon as it was turned on it said "free upgrade to Windows 10 available". Due to small SSD memory, could not simply upgrade from installed to Windows 10. I used a clean...
Product key problem on install in Installation and Upgrade
I have downloaded Windows 10 to an external hard drive and tried to install it. It asks for a product key and I have tried every one that I have for both Windows 7 and 8. I have even used the one copied from the computer using Speccy. None of...
I installed windows 10 on top of Windows 7, but then did a clean install afterwards from an image on a USB drive. I wrote down the product key from the first install after scraping it with a program. The clean install of 10 went fine, but it...
Hi All, Ok to cut a long story short, I was running the Insider Preview Build on a Virtual Machine, I decided to blat my laptop and install the insider preview on it instead day before official release. It built okay, but didnt like my insider...
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 15:40.
Find Us