Can't boot Win10 with hyperthreading enabled (dual Xeon)  

  1. Posts : 1
    Windows 10

    Can't boot Win10 with hyperthreading enabled (dual Xeon)

    for a while now I have been unable to enable my hyperthreading and start windows 10 .
    When Hyperthreading is enabled in BIOS, it loads up to the point where the windows logo appears, then loads a couple seconds more, then reboots... in a loop up to the point where you need to recover, but then it still can't recover until I disable HT.

    I can remember in the beginning when I assembled the computer, to test rendering performance on cinema4D with Vray, I was being recommended to disable HT for better performance, so I did some testing with HT on and off. It was better with HT off for vray, so I left it off

    However I recently switched to Corona renderer, but for some reason now I can't get HT back enabled anymore...

    The guys at the computer hardware store had no solution for me, and I really wanted to see if I can benefit from HT on such a powerful machine, therefore I tried posting here too... I feel like I'm missing out on 40 cores... Sad

    Here is a quick overview of the components, built in 12/2016 :

    2x INTEL XEON E5-2698 V4 14NM 2.2-3.6GHZ 50MB 20 CORES --> so a maximum of 80 cores with HT
    ASUS Z10PE-D16 WS --> Bios latest version
    8x KINGSTON 16GB 2400MHZ REG ECC DDR4 KVR24R17D4/16
    MICROSOFT 64 NL WINDOWS 10 PRO 64BIT OEM - up to date
    CORSAIR AX1500i

    now here is the mind breaker:

    When i set msconfig > boot > advanced options > number of cores > unticked
    I cannot boot with hyperthreading, so leaving HT disabled, then

    device manager reads 40 CPU's
    task manager: 2 socket, 40 physical cores, 40 logical cores
    CPU-Z recognizes 2 CPU's with 20 physical/20 threads for each CPU
    render a testframe in 5min54

    When i set msconfig > boot > advanced options > number of cores > 40 (which seems to be the maximum in the list)

    I CAN boot with hyperthreading enabled, but then

    device manager reads 80 CPU's
    task manager: only 1 socket, 20 physical cores, 40 logical cores (so one processor with hyperthreading)
    CPU-Z recognizes only 1 CPU with 20 physical/40 threads
    render a testframe in 5min41, yet somehow cinema4D and windows feel a bit faster

    and msconfig > boot > advanced options > number of cores > still has a maximum of 40

    I already tried clearing CMOS and upgraded BIOS to last available version
    Also for now, I reset BIOS Settings, so everything is at default exept for the HT and boot configuration
    Are there other settings in the BIOS I must change from defaults?

    Any tips are most welcome!
    Feel free to ask more info.
      My Computer

  2. Posts : 1,287
    Windows 10

    If you want honesty i doubt anybody on the forum been close to such specs to recommend you anything , so this is where you call microsoft hotline , most probably they havent tested windows for such specs either .
      My Computer

  3. Posts : 4,224
    Windows 10

    Why not run the Windows 10 Pro for Workstations version? This should get you past limitations on the Pro-only version.
      My Computers

  4. Posts : 40,497
    windows 10 professional version 1607 build 14393.969 64 bit

    See this link on the pro and con of hyperthreading:
    Hyper-threading - Wikipedia

    Some options for additional information are Intel forums and support.
      My Computer

  5. Posts : 1

    Hello there. I haven't been an a+ person for too long but I agree with Mr. Tittle and Nightmayor...This sounds like a software issue with win 10...I'd try a more robust version of win 10 or maybe use a different; Linux....try a dual boot. Also check with Microsoft. It sounds to me your version of win 10 just cant handle the power of your system.
      My Computer


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