New Latitude 7400 won't boot to IPv4

Question

Received a New Latitude 7400 and a WD19TB. No matter how many options I play with in the BIOS, it refuses to boot from the docking station NIC (when entering the F12 boot menu, boot to network is not shown). Also tried a D3100 and a D6000 dock. The laptop is running BIOS 1.3.11, which is most current available. UEFI Network stack is enabled, Thunderbolt and USB boot supports are also enabled, secure boot is disabled. Anyone have any experience with this newer model and PXE booting?

speedstep · Answer

USB-C is NOT Thunderbolt.&#xa0; The other issue is that the bios likely expects the onboard Ethernet to be the PXE booting option. If you do not have Thunderbolt options in bios there is no thunderbolt controller and therefore the DOCK is NEVER going to work. <ADMIN NOTE:&#xa0;Broken link has been removed from this post by Dell> The other issue is Thunderbolt security. It likely will have to be OFF as well as Secure boot OFF and Legacy ON. Thunderbolt options Greyed out in BIOS means its an option for that model but you DO NOT have the option installed.&#xa0; It cannot be added later. You may encounter an issue where a Dell with a USB Type-C port will not support a connection to a Thunderbolt 3 device (such as a Dell Thunderbolt Dock (TB16). This is a result of either: The system does not meet the hardware requirements for Thunderbolt 3 The system does NOT have the capability and there is no OPTIONAL Thunderbolt 3 controller that can be added later. https://www.dell.com/support/article/us/en/04/sln300756/frequently-asked-questions-faqs-about-the-thunderbolt-port-on-a-dell-pc?lang=en &#xa0; Thunderbolt 3 — supports different security levels: none: No security. The behavior is identical to previous Thunderbolt 1 and 2 versions. dponly: No PCIe tunnels are created at all, but DisplayPort tunnels are allowed and will work. user: Connected devices must be authorized by the user. Only then will the PCIe tunnels be activated. secure: Basically the same as user mode, but additionally a key will be written to the device the first time the device is connected. This key will then be used to verify the identity of the connected device. &#xa0; Thunderbolt 3 Security Settings &#xa0; &#xa0;

AA-Ron · Answer

Having same problem with a 7400 2-in-1 with a TB16. All firmware/bios updated to latest.

It seems no combination of settings will let me boot to network. All the appropriate boxes are checked (no option for legacy boot options in my bios). I think i deleted the secure boot keys at some point though i don't think this could be related.

Here's the thing. Another 7400 works fine. I've been re-imaging it for 2 weeks without issues.

Dell-Paventhan · Answer

Hi TokiyoRio,

Dell recommends installing the following BIOS, firmware, and drivers step-by-step in the prescribed order to ensure optimal performance:
Search for your system model name under Select a Product selection, or enter the service tag of your system to locate the Drivers & Downloads page on the Dell support website (www.dell.com/support). Change the Operating System to view all available updates for your system.

Flash the latest Basic Input/Output System (BIOS) for the system. This is available in the "BIOS" section.
Install the latest Intel Thunderbolt Controller Driver for the system. This is available in the "Chipset" section.
Install the latest Intel Thunderbolt™ 3 Firmware Update for the system. This is available in the "Chipset" section.
Install the latest Intel HD Graphics Driver for the system. This is available in the "Video" section.
Install the latest Realtek USB GBE Ethernet Controller Driver for Dell Thunderbolt Dock. This is available in the "Docks & Stands" section.
Install the latest Realtek USB Audio Driver for Dell Thunderbolt Dock. This is available in the "Docks & Stands" section.
Restart the system.
After the software update process completes, connect the AC adapter to the Dell WD19TB dock first and then attach the Thunderbolt™ 3 (Type-C) cable to the computer before using the docking station.

To learn more about installing drivers for Dell Thunderbolt Docking Station WD19TB docking station, refer to the Dell knowledge-base article Dell Thunderbolt Docking Station WD19TB - Driver Installation Guide

savvy2 · Answer

a New Latitude 7400 2in1 laptop posted to DESKTOPS (docking? to what)

why not tell first this is a business, right?

and that you are in fact running PXE (thinnet) server to boot how many PXE setup PCs.???? why not tell all that first. what you have matter, what you want to boot from also matter, (the goal is what?)

If yes to PXE really , then make sure the PXE settings are all set right I BIOS.

the PC needs no HDD to boot PXE (a goal of thinnet is that tops) but no goals stated,

I some cases IDK, the PXE server must be edited to allow new workstations to book even MAC restricted

and that even opens up the fact that many business grADE switches and routers are have ports married to 1 MAC. (THIS IS A TOP SECURITY FEATURE IN HUGE OR GOV SYSTEMS)

We can not guess what you have now. (end to end what is there, see>? every inch nOT CAT6 WIRE)

if a business call IT? they know what to do.... any thing PXE is their PLAY.

if the last IT guy was fired and now the system docs are now lost, oh boy, seen that... .

from small business too large , all the above can apply or only some, IDK I can't see your system at all....

see this wiki as primer>?

XPS Desktops

New Latitude 7400 won't boot to IPv4

Was this post helpful?