Windows 10无法启用Hyper-V：重启后设置自动还原

Hey there, let's figure out why your Hyper-V settings keep reverting after reboot on your Dell Latitude E6440 running Windows 10 Pro. You've already checked hardware virtualization and tried disabling the network adapter—good calls! Let's dive into some more targeted fixes that should resolve this:

• Double-check BIOS/UEFI settings (and update firmware)
  Older Dell models like the E6440 sometimes have firmware quirks that mess with Hyper-V persistence. Boot into your BIOS (press F2 as soon as the Dell logo appears) and confirm:

  • Virtualization Technology (VT-x) is definitely enabled (you know your hardware supports it, but make sure the BIOS toggle is turned on)
  • Secure Boot is disabled—this can block Hyper-V from saving changes properly on older systems
    Also, grab the latest BIOS update for your E6440 from Dell's support portal. Firmware patches often fix these kinds of odd persistence issues.

• Repair corrupted system files with DISM and SFC
  Corrupted system files can prevent Windows from retaining feature changes. Open Command Prompt as Administrator and run these commands one after another:

  DISM /Online /Cleanup-Image /RestoreHealth
  sfc /scannow
  

  Let each command finish completely, restart your laptop, then try enabling Hyper-V again through the GUI.

• Enable Hyper-V via PowerShell (bypass the GUI)
  Sometimes the "Turn Windows features on or off" interface glitches out. Let's use PowerShell to force-enable Hyper-V directly:

  1. Right-click the Start menu and select "Windows PowerShell (Admin)"
  2. Run this command:

     Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V -All
     

  3. When prompted, restart your system. This method skips the GUI and applies changes at a system level, which might avoid the revert problem.

• Rule out conflicting software
  Even with the network adapter disabled, other tools could be blocking Hyper-V. Things like third-party antivirus, alternate virtualization tools (VirtualBox/VMware), or system optimizers might interfere. Try temporarily uninstalling or disabling these tools, then attempt to enable Hyper-V again to see if the issue goes away.

• Ensure Windows is fully updated
  Missing cumulative updates can cause compatibility issues with Hyper-V. Head to Settings > Update & Security > Windows Update and install any pending updates. Once your system is up-to-date, restart and try enabling the feature again.

内容的提问来源于stack exchange，提问作者Rishi