I managed to install windows 7 x64 directly on my Asus z690 on ssd and on NVME M.2 simply with a Russian/eng iso from "AG" that has USB 3.0 and NVME drivers.
Then managed to install the old chipset V10 from Asus website like you did,
Then installed "SHA256_Signed_modified_intel_IO_USB3.1_driver_32_64bit" and some USB works now !
i still have some more drivers to install but most Asus drivers downloaded from the Asus website do not start and says:
"Does not support this operating system: WNT_6.1P_64_MCE"
Can you maybe share some of your driver files for asus motherboards?