WDS unsigned network drivers

Hi,

I have just bought some new HP elitedesk 800 G2 machines.

Windows 10 currently doesn't have network drivers for that model.

I downloaded the network drivers for HP elitedesk 800 G2 from both Intel and Microsoft Update Catalog. Surprisingly, the network drivers from both Intel and Microsoft Update Catalog are not signed.

I'm using Windows Deployment Service (Windows Server 2012 R2). I used the "dism" command to mount boot.wim and added the unsigned network drivers to the boot.wim (/ForceUnsigned and /recurse). The addition was successful. However, when I booted a HP elitedesk 800 G2 from PXE (network boot), it could not get the ip address because boot.wim did not load the unsigned drivers.

How can I fix it ?

Thanks for your help.