Broadcom Network Cards Disappeared

KB ID 0000034 Dtd 11/06/09


After Driver upgrade on Server 2008 – Broadcom network cards disappear.

Seen with Broadcom NC373 (On board) and 373T (PCI) Cards.


1. Roll back the Driver – Use cp009703.exe

2. Install the above and reboot, On board chips will still not be visible (until step 3 is completed) PCI card NIC will be visible.

3. Turn on Hidden devices in device manager

start > run > cmd {enter}
set devmgr_show_nonpresent_devices=1″ {enter}

4. Locate the DOWNED NIC under system devices > Right click enable.

5. Set IP addresses and reboot.

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Author: Migrated

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