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Why is the internal network card disabled when DELL latitude D830 is undocked?
Wiki User
∙ 14y ago
I've seen it in several DELL Latitude series D laptops, that the ethernet NIC (Network Interface Card) at some point stops working when the laptop is used solo, and works fine when it's inserted in a DELL docking station / port replicator.
...are, that when docked, the network connection is fine. When the computer is used standalone (doesn't matter if hot-undocked, or just booted up standalone, with power supply connected or on battery), the corresponding Local Area Connection in Windows becomes set to "disabled", and the network card in the Hardware Manager is visible as red crossed-out. Trying to enable the connection fails, re-enabling the network card fails as well.
The network card in Latitude D-series is power-managed, so initial thoughts were that this is power management gone bananas problem. However, it's not exactly...
...is the way DELL notebooks treat the internal network card and the network outlet on the dock/port replicator. They try to make the "external" (dock) network card sort of an extension of the built-in one, with the same MAC address etc.
In short, the outcome is such, that when you install or update drivers for this network card when docked, the driver seems to make some incorrect assumptions and the only working state is the docked state.
is not very complicated, provided that you have administrative rights to your system.
1) Boot the computer undocked (standalone).
2) Go to the Hardware Manager (via Right-click on My Computer->Properties->Hardware tab, or via Start->Settings->System)
3) Go to Network Adapters
4) Locate the Broadcom NetXtreme... (or similarly named) network card - usually it will have it's icon crossed out in red. In some cases might need to choose "show hidden devices" to see it.
5) Right click on it and choose Uninstall, confirm uninstalling the card from system.
6) Go to Settings->Control Panel->Add New Hardware
7) System should search for a moment and automatically find the network card, install the same drivers it had before (but this time properly)
8) You can reboot and see that your network card is functioning standalone. You can also dock the laptop and see, that it works docked as well. And the best part - when you undock again - the card will still work! :)
In the future, if you want to install some updated network drivers on this Latitude, remember to install them when the machine is used standalone, without dock/port replicator.
Good luck!
Wiki User
∙ 14y ago
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