1.    13 May 2015 #1
    Join Date : Apr 2014
    Denmark
    Posts : 246
    Windows 10 Pro

    Can't upgrade from 8.1 to 10 - CPU less than 1 GHZ


    Click image for larger version. 

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    As the pic show, Windows 10 won't install. What to do??
      My ComputerSystem Spec
  2.    13 May 2015 #2

    Hi. Could you provide us with your computer's specifications. If you're not familiar with how to do this go to piriform.com and download Speccy.
      My ComputersSystem Spec
  3.    13 May 2015 #3
    Join Date : Apr 2014
    Denmark
    Posts : 246
    Windows 10 Pro
    Thread Starter

    As you can se on the pic to the right (CPU-Z) I have a core i7 4790K running at 4,5Ghz, 16 Gbyte ram, ASUS Maximus Ranger VII mobo, Samsung 840EVO SSD. Do you need to know more?
      My ComputerSystem Spec
  4.    13 May 2015 #4
    Join Date : Apr 2014
    Space coast of Florida
    Posts : 5,382
    Windows 10 Pro X64 16299.19

    Read some threads where this happened in Windows 8.1 and flashing the BIOS fixed a few of them. You can check to see if there is a BIOS update for you system at the manufacturers web site.
      My ComputersSystem Spec
  5.    14 May 2015 #5
    Join Date : Apr 2014
    Denmark
    Posts : 246
    Windows 10 Pro
    Thread Starter

    No new BIOS for my mobo. But I disabled "Intel Speed Step" and "Intel Turbo Mode" in BIOS under "CPU settings", and then it installed :-)
      My ComputerSystem Spec
  6.    14 May 2015 #6
    Join Date : Apr 2014
    Space coast of Florida
    Posts : 5,382
    Windows 10 Pro X64 16299.19

    That was the next things I was going to suggest you try
      My ComputersSystem Spec
  7.    15 May 2015 #7
    Join Date : Jul 2014
    Serbia
    Posts : 10,647
    W10 Insider + Linux

    Seems like "Intel Speed Step" is set too aggressive and installation didn't manage to load it up enough to jump over 1 GHz.
      My ComputersSystem Spec
  8.    15 May 2015 #8
    Join Date : Apr 2014
    Denmark
    Posts : 246
    Windows 10 Pro
    Thread Starter

    Quote Originally Posted by CountMike View Post
    Seems like "Intel Speed Step" is set too aggressive and installation didn't manage to load it up enough to jump over 1 GHz.
    I don't think that is the case. If you look at the picture in #0 you can see, that the CPU is running ca 4500MHZ at the time. I ran Intel Extreme Tuning CPU Stress Test at the same time as running the setup.exe from Windows 10, and allthough the CPU-speed was ca 4500MHZ win10 claim the CPUspeed to be less than 1 Ghz, as shown in the picture.

    I think MS has to look into this install procedure again ...
      My ComputerSystem Spec
  9.    15 May 2015 #9
    Join Date : Apr 2014
    Space coast of Florida
    Posts : 5,382
    Windows 10 Pro X64 16299.19

    I believe MS recommends removing any overclocking before install one of their OSes. Put it back once done.
      My ComputersSystem Spec

 


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