Install Windows 7 on HP 800 DM G4

my HP 800 DM G4 8600 is running Windows 11 Pro, I am thinking to install Windows 7 and reading all potential known issues as well as the solutions.

will this HP 800 G3 install media work for HP 800 G4? In SIW2 your G4 TWR install, had you made it to boot in install?
HP 800 mini G3 black screen when install Windows 7 BIOS CSM/MBR disk
if boot, then I can try UHD630 driver (i5-8600/8th gen) on Windows 7

UHD630 driver. the link of win7_8th_i3_i5_Driver_2.0.rar is broken.
https://www.biostar.com.tw/app/en/ev...Driver_2.0.rar

USB 3.1 driver. it doesn't exist on Windows 7 ?
winraid has removed all of them.
--- Due to the reason of non resistance, all Intel related mod drivers will be removed from the shelf.
can I take it from Del web or Lenovo web?

Chipset Q370. it's reported, even NOT install, G4 worked fine.
besides, can drivers of SATA NVMe Audio be shared between G3 (Chipset Q270) and G4(Chipset Q370)? these hardware are with same specs between per HP.

Thanks SIW2 for your prompt reply.

I am reading the link you pointed to.

for UHD630 driver, anyone tried this site?
Intel UHD Graphics 630 (video cards) drivers for Windows

Thanks,
Then I will go SDI solution you recommended.

looks I am late on the game, previous posts were about 2-5 years ago. most links got "404". my present hope is SDI .

Its BIOS Admin is password-protected. (HP 800 DM G4)

I am stuck here. need to enable Legacy to boot USB stick of Windows 7 install media.

There are two ways to achieve the goal, using SIW2's tool, present version 7UPv64R.

1. start from plain Win7 SP1 install media. when clean-install completed, activation is requested. this method is universal (applied to various motherboards).
2. since it's HP computer, I would start from Win7 install media by HP Cloud Recovery, it's automatically activated without online when clean-install done. this saves W7 key and activation procedure.

I tested both ways. and tried four combinations of boot.wim + install.wim.
it's found that Win7 automatic activation was HP boot.wim-related. in my test, if using SP1 boot.wim, no matter install.wim (SP1 or HP), always requested activation when Win7 clean install done.

Win10.esd format + modified Win7 install, worked too. again, Win7 activation was requested when install done.

Hence, the best solution is HP Win7 install media+SIW2's tool. saving W7 key and activation procedure.

note:
HP Win7 install media supports upto usb 3.0/TPM 1.2. For any new boards request usb3.1/3.2, have to add the driver and simplix update (including Win7 TPM2.0). SIW2's tool is a must-be in this case.

After my homework, it's realized that two drivers looked impossible.
1. AC9560 wifi (nowhere)
2. UHD630 graphics (invalid)

Globally, all forums were discussing them then ended up no found (winraid, MDL, reddit, ntlite, HP, Intel, archive, , , ,. could be previously "available" now "unavailable).

HP 800 G4 DM has Cat5 port. hence I use it to replace AC9560. its W7 ethernet /NIC driver, sp84719.exe.
installed nic driver, went online, followed your method using SDI, got UHD630 driver installed (slow, took hours). this drive is working, no complaints.

" Display adapter driver version 21.20.16.5077" <--- right same as yours

my PC is up. two IDs are with yellow marks, AC9560(ID A370), and unknown (IFX0763, can be TPM 2.0).