1.    22 Feb 2016 #1
    Join Date : Feb 2016
    Posts : 5
    Windows8.1

    Windows 10 installed but it is not there


    I upgraded to Windows 10 from 8.1 on my Sony vaio laptop. It downloaded OK then started installation which took an hour or so and then I got my startup window with no message of any kind. The Home screen looked the same and when I checked I still have 8.1. What happened?
      My ComputerSystem Spec
  2.    22 Feb 2016 #2
    Join Date : Nov 2015
    Posts : 2,962
    64bit Win 10 Pro ver 1709 Build 16299.125

    Hello pchoho,

    This scenario can occur when during the installation some aspect of the W10 update fails and so it reverts back to your previous windows version. Have a look at your update history to see if there are any messages or error codes.
      My ComputersSystem Spec
  3.    22 Feb 2016 #3
    Join Date : Feb 2016
    Posts : 5
    Windows8.1
    Thread Starter

    Hi philc43,
    Thanks for prompt reply. Have checked history and I see it failed with error C1900101. Searching Microsoft portal for help on this but haven't found anything yet!
      My ComputerSystem Spec
  4.    22 Feb 2016 #4
    Join Date : Feb 2015
    Bamberg Germany
    Posts : 18,061
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu

    Does it also have a 0x2000B or something similar?
    It should read for example C1900101 0x200017.
    For upgrade / update error codes and their meaning go here: https://support.microsoft.com/en-us/kb/3107983
      My ComputersSystem Spec
  5.    22 Feb 2016 #5
    Join Date : Feb 2016
    Posts : 5
    Windows8.1
    Thread Starter

    There is no extension on the error code in my history file
      My ComputerSystem Spec
  6.    22 Feb 2016 #6
    Join Date : Feb 2015
    Bamberg Germany
    Posts : 18,061
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu

    Quote Originally Posted by pchoho View Post
    There is no extension on the error code in my history file
    Look at Reliability History in Control Panel\All Control Panel Items\Security and Maintenance\Reliability Monitor
    Then right click the error and see if you can find the complete error code.
    Click image for larger version. 

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    Click image for larger version. 

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      My ComputersSystem Spec
  7.    22 Feb 2016 #7
    Join Date : Feb 2016
    Posts : 5
    Windows8.1
    Thread Starter

    System slightly different. Security and maintenance is in Action centre but can't find Reliability monitor.
    OK found it but different and no info'
      My ComputerSystem Spec
  8.    22 Feb 2016 #8
    Join Date : Feb 2015
    Bamberg Germany
    Posts : 18,061
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu

    Quote Originally Posted by pchoho View Post
    System slightly different. Security and maintenance is in Action centre but can't find Reliability monitor.
    OK found it but different and no info'
    It was a shot. I have forgotten that it's called something different. One of the big improvements with Win10 is all real errors and updates(WU or from store) are shown, not like in Win7 & 8.
      My ComputersSystem Spec
  9.    22 Feb 2016 #9
    Join Date : Feb 2016
    Posts : 5
    Windows8.1
    Thread Starter

    Thanks for trying! It looks as though it is probably a driver issue and I will pursue that.
      My ComputerSystem Spec
  10.    22 Feb 2016 #10
    Join Date : Aug 2015
    Maine
    Posts : 40,174
    Windows10Pro 64Bit

    Quote Originally Posted by pchoho View Post
    Thanks for trying! It looks as though it is probably a driver issue and I will pursue that.
    Yes it could be a driver issue....or a AV issue, some AV programs should be uninstalled before upgrading to Windows 10, as they can interfere with the upgrade process.
      My ComputersSystem Spec

 


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