HP EliteDesk 800 G2 Mini 35W does not boot from Network

[Uschade]

When I set "Legacy boot disabled and secure boot enabled" in BIOS, I can't make a choice between IPv4 network boot or IPv6. Pressing F12 while booting has the effect, that the network-boot screen appears, but it is plain white...with no options on it, except the grey "esc" button.

I did the BIOS update from vers. 2.20 to 2.30....no effect.

I did a roleback to 2.28.....no effect.

I changed the settings back to "legacy enabled"...pc is booting from network.

Any ideas ?

[Uschade]

Ok, got the same issue now with an HP EliteBook Folio 1040 G3. Using F12 leads to an plain white screen, with a blue header "Network (PXE) Boot Menue", the blue HP sign in the upper right corner and a grey ESC button left handed.

I already did the same before with an EliteDesk 800 G2 TWR, and it worked all fine. I changed the setting from "legacy enabled" to "secure boot enabled", saved it, reboot the pc, pressed F12 and the white screen appeared with the options "IPv4 Network Boot" and "IPv6 Network Boot". So I can't understand, what is going on here....

[Uschade · Accepted solution]

Ok, I fixed it :

I reset BIOS on both assets back to factory defaults and then changed the setting back to "secure boot enabled" on the notebook.

Now both options are available, when I press F12 while booting.