Windows 7 on Z390 chipset motherboard?

So I had an i7 4790k system that started acting wonky on me, so after troubleshooting down to a failing clock on my old board and deciding it was time to upgrade, I sprung for a new CPU (i7 9700k) and board (Gigabyte Z390 Aorus Pro Wifi) (and ram of course). I got everything assembled and whatnot, put my Samsung 950 Pro NVMe in one of the M2 slots and fired it up. Having had success moving OS drives to upgraded motherboards running similar chipsets from the same maker, I was of course pleased to see Windows 7 start screen instead of a BSOD.

Aside from the fact that it won't see my on-board wifi, bluetooth, and some part of the USB sub-system, it works great. I just can't seem to find Windows 7 drivers for 2 items in DM (Network Controller and Universal Serial Bus (USB) Controller.

I was hoping to stay on 7 Ultimate until they stop supporting it. No 7 drivers can be found on Gigabyte's site for this board, only Windows 10 is listed. Attempting to use Windows Update has also failed. Is anyone aware of a workaround, or something I can do? Or is simply "Sorry, you're out of luck." and I have to go buy Windows 10. Buying 10 is no problem, to be certain, if that's my only option, so be it. Just wondering if there are any other ideas. Thanks in advance!