Windows 10: Cannot upgrade from W7 to W10

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  1.    31 Jan 2016 #11

    Clean install is always better, you do know you can do a "clean-upgrade" install....or use the COA key on the case with Win 10 clean install.

    Clean Install Windows 10 Directly without having to Upgrade First - Windows 10 Forums
      My ComputerSystem Spec

  2.    31 Jan 2016 #12

    So I can now clean-install W10 using my W7 key? Great if I can. I take it the DVD I've downloaded & burnt will be suitable media to start with.

    Am having a last ditch attempt with just one screen, and a USB keyboard & mouse - I had two screens (DVI & HDMI) and a wireless USB mouse.

    If it still fails I'll be getting a larger SSD and clean-installing.
      My ComputerSystem Spec

  3.    31 Jan 2016 #13

    Yup the Win 7 key can be used to activate - you can skip the initial key prompt during the install procedure. Good luck.
      My ComputerSystem Spec

  4.    31 Jan 2016 #14

    Thanks. I've gone for the cheapo free delivery so it could be over a week before I have time to try again. However hopefully a clean install will do the trick.
      My ComputerSystem Spec

  5.    31 Jan 2016 #15

    Oriental Slave said: View Post
    Thanks. I've gone for the cheapo free delivery so it could be over a week before I have time to try again. However hopefully a clean install will do the trick.
    And I will be installing onto a new disk, with the old one safely out of the way. The down side is having to reinstall all the application software yet again...
      My ComputerSystem Spec

  6.    31 Jan 2016 #16

    You still didn't have enough space on your C:\ drive. The upgrade from 7/8.1 to 10 saves your old OS in a folder called Windows Old so you can go back to the older version of Windows if you don't care for Win 10. With only 30GBs of space free, out of 94GB, that mean your Windows 7 install is taking upwards of 20-30 maybe even 40 GBs of space and can't be saved along with the install of 10.
      My ComputerSystem Spec

  7.    01 Feb 2016 #17


    Grrrr, how stupid of the upgrade to not point that out before starting the process, or at least give a meaningful error message. I can believe it. However now the larger disk is on it's way I'll simply do a clean install when that turns up.
      My ComputerSystem Spec

  8.    03 Feb 2016 #18

    I used the free version of TreeSize to check where the space has gone. Office is the main culprit. It's an HUP version which doesn't give any choice about where it will install.
      My ComputerSystem Spec

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