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May 25th, 2017 16:00

Optiplex 7040 NIC disables in BIOS

I've got an OptiPlex 7040 that sporadically shuts down without a BSOD and when it is powered back on, the NIC is disabled in BIOS. We have to reboot and re-enable it. When the issue started happening, after enabling it, even a normal reboot would disable the NIC again.

I updated the BIOS and other drivers, didn't spot anything in the event log... opened a ticket w/ Dell support and they eventually replaced the motherboard.

Issue still happens, just not as frequent. Anybody else see this issue related to NIC repeatedly becoming disabled in BIOS?

Community Manager

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54.3K Posts

May 30th, 2017 07:00

I am not sure what the culprit is, but the same issue was seen here by Optiplex 5040 users and here by Optiplex 3040 users. Setting a BIOS password helped.

May 30th, 2017 11:00

Great, just tried it. I'll update in a few days with results.

21 Posts

October 17th, 2017 11:00

I've had the exact same issue on three of my 11 7040's in the last three months. I originally suspected foul play / sabotage but have discovered otherwise. I've set BIOS passwords on the three machines that did it and haven't had the problem since. I haven't tried a BIOS update though...

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