Article Number: 000146879
OptiPlex 9020 AIO users reported that the UEFI Network Stack check box inside the BIOS would un-check itself after exiting the BIOS. This was preventing the UEFI networking protocols from showing up in the one-time boot menu (Figure 1).
Dell engineering has confirmed the issue is resolved by the installation of a BIOS update available from the Dell Support Website, Drivers and Downloads, BIOS section.
OptiPlex 7010, OptiPlex 9020 All-In-One
21 Feb 2021