Ethernet on thunderbolt dock won't work

[fmloos]

I have ethernet issues with my Thunderbolt 3 dock 150W and my Zbook 15G3, running on windows 7 / 64 bit.

I had many issues before with the system after a BIOS update (slow performance, usb poorts that would't work, windows that would not download updates, ect.). I read many postst with similar problems. The hardware was exchanged by HP but the problems remained and I was left alone to install the BIOS and updates. Thank you HP!
After a long period of fiddeling I got everything back to work.

Exept for the ethernet connection on the thunderbolt dock. Somehow the drivers are not inatlled / available. The ethernet connection / WLAN on the laptop work fine, but not on the dock.

I don't know where to find the right drivers / how to install them. Who can help?

[Huffer · Accepted solution]

I have the Zbook 15 G3 Mobile Workstation using the Zbook Thunderbolt 3 dock:

http://www8.hp.com/us/en/workstations/zbook-dock.html

I am sending this on the Zbook connected to the dock using its gigabit ethernet port. HP Support Assistant provided all the drivers needed for the dock. Here is the screenshot of my device manager:

What does your device manager look like under network devices? The Intel ethernet is the built in and the Broadcom NetXtreme is the ethernet in the dock. HP has drivers for both on the support page for Windows 10 64 bit under the Zbook G3 Home page. 

I did have a bit of a struggle initially getting the dock to work but I went into the BIOS and disabled all Thunderbolt security settings. If you need any more help post back.

If this is "the Answer" please click "Accept as Solution" to help others find it. 

[fmloos]

My device manager shows something different. The ethernet connection on the laptop works indeed, but the Broadcom driver is missing. Let's see if your tip helps.

[fmloos]

I downloaded the driver, but it won't install:

[fmloos]

Obviously i tried to install the wrong driver in the first place. But this one did the job:

http://h20564.www2.hp.com/hpsc/swd/public/detail?sp4ts.oid=8693774&swItemId=ob_167287_1&swEnvOid=405...

Thanks for the advice!

[Huffer]

Sorry the one I sent was for Windows 10. You figured it out. Good job and I am glad we helped you get it working.