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No Docking until Windows Login - EliteBook 850G7, Thunderbolt Dock G2

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EliteBook 850G7, Thunderbolt Dock G2
Microsoft Windows 10 (64-bit)



we got new Notebooks (Elitebook 850 G7) and Thunderbolt Dock (Thunderbold Dock G2 120W) but can't get them to work. We are running Windows10 2004, (in our opinion) fully updated Docking and Notebooks and have the problem that the USB Docking isn't recognized until we login into windows. We tried different BIOS Setting with authorization and no security (auto accept all USB-C Docking) but it doesn't help. The program we are using is the "Thunderbolt Control Center".


Please help us >.<




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Hello !


Welcome !  Thank you for choosing HP.



  • The HP Thunderbolt Dock G2 supports pre-OS environment only in ThunderboltTM Security Level 0 and Security Level 1 (please reference the Security Levels – Available Functions and Ports section of this document for more details about the ThunderboltTM Security level settings).
  • Supported features:USB peripherals such as keyboards, mouse, and flash drives connected to the docking stationPre-boot Execution Environment (PXE) External displays (the internal panel must be closed for external panels to function at pre-boot)

  • For any pre-boot support with the HP Thunderbolt Dock G2 you will be required to disable FastBoot in F10 BIOS settings.Disabling FastBoot in F10 BIOS:
    1. Press the power button to turn on the unit.
    2. At the HP logo screen press F10 to enter the BIOS settings menu.
    3. Click the Advanced tab and select Boot Options.
    4. Unselect the FastBoot Option.
    5. Save and exit.
  • *Note: Please ensure you are running the latest drivers, BIOS, and firmware to enable full functionality of all features

Reference >>





  • Update BIOS, drivers and docking firmware:



** I am an HP employee *** I express personal opinion only *** My location: Europe *** HP Expert - Volunteer
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Message 3 of 3
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can you explain what do you mean by 'isn't recognized until we login into windows'? 

since the elitebook g6 generation, thunderbolt is set to 'no security' in the bios as intel closed the TB vulnerability potential in the chipset... do you have to login with the laptop lid open?


have you used HP Image Assistant to confirm the BIOS and drivers are up to date, including the dock's firmware?

I work for HP. However, all opinions and comments are my own.
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