Hi, On the Prodesk 400 G7, it's not possible anymore (unlike previous desktop models) to boot on PXE. We had all the previous models of this serie in our company and always could boot on PXE to install our Windows 10 wim images. The problem has been submitted in this topic a few times ago and it seems there is no solution and answer from HP:

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Up to 4.9 GHz maximum Turbo Frequency (3.1 GHz base frequency) 16 MB cache, 8 cores, 16 threads. Intel UHD Graphics 630. DDR4 memory up to 2666 MT/s data rate. Intel vPro

OC_HP_Prodesk_400_G6. OpenCore EFI folder for hackintosh on HP Prodesk 400 G6 with macOS BigSur

HP ProDesk 400 G6 Desktop Mini PC Windows 10 ProIntel®️ Core™️ i3-10100T (3.0 GHz base frequency, up to 3.8 GHz with Intel®️ Turbo Boost Technology, 6 MB L3 cache, 4 cores, 8 threads)8 GB memory; 128 GB SSD storageIntel® UHD Graphics 630 50Z90UA#ABA 4.4 /5 ( 18) ENERGY STAR | Business 3% back in HP Rewards ADD TO COMPARE VIEW DETAILS ADD TO CART

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Specifications page for HP ProDesk 400 G6 Microtower Business PC. 1 Absolute agent is activated when customers activate a purchased subscription. Subscriptions can be purchased

Crucial Memory and SSD upgrades - 100% Compatibility Guaranteed for HP - Compaq HP ProDesk 400 G6 Small Form Factor - FREE US Delivery.

HP ProDesk 400 G6 Desktop Mini PC. Desktop system certified with Ubuntu. Release. Ubuntu 20.04 LTS 64 Bit. Pre 

HP ProDesk 400 G6 DM i5 8/256GB PC (23G71EA#UUG) · Chassis type: Mini housing · Processor model: Intel Core i5-10400T, 2.00 GHz · RAM: 8 GB · Graphics: Intel UHD 

Memory modules support data transfer rates up to 2666 MT/s; actual data rate is determined by the system configured processor. See processor specifications for supported memory data rate. Graphics Storage note: For hard drives and solid state drives, GB = 1 billion bytes. TB = 1 trillion bytes. Actual formatted capacity is less.