Intel driver update caused BSOD "inaccessible boot device" then bios "boot device not found"

[adntigger710]

This may be long but want to make sure I included everything as I know little things can make a big difference. Note, it's an HP omen 15 with 32GB intel optane drive.

Computer was working fine and got a notification that intel had 2 driver updates. I clicked the button on the popup to update and computer froze right away, then shut off and restart (no BSOD at this time). Upon restart, BSOD with "inaccessible boot device".

It's probably important to note that sometimes it actually WOULD boot into windows. I'd put in my pin, get to desktop, but mouse would show "working" until it would BSOD to "inaccessible boot device" again.

Googled fixes for this. Got repair mode to come up a few times. Startup repair did nothing. No windows updates to uninstall. Went into command prompt and noticed windows wasn't on C drive. Oddly, in file explorer it IS on c drive. I DO have a D drive but it's a self-installed 1TB SSD just for games. Searched D drive, the windows dir was there (weird...). Was following a fix, typed cd regback on the D drive (was already under windows\system32\config) but when I hit enter it did nothing (just the blinking cursor on the next line. Closed it out after 20 mins or so). After this, it actually no longer could find this D drive, as if it disappeared.

At some point it started to not even boot into windows recovery, I now keep getting the HP bios screen with "boot device not found" (3F0). F11 can't get me into recovery. It's as if Windows has now also disappeared.

Checking bios (technically UEFI) and it's not finding all storage. It sees the 29GB optane drive and my 1TB self-installed WD black. So, it's not seeing the original drive (again, this is odd as command prompt was seeing a "c" drive, but maybe this was the optane?) When running the hardware diagnostics it sees the optane drive but Short DST is "not available". Under "UEFI HII configuration" it also shows "incomplete optane volume" and it's status is "offline". Everything I see online says I can click "reset to non-optane" but that might not even fix it and that makes me completely lose everything.

SO, it sounds like whatever driver it was trying to update messed up the optane drive and I assume that's my boot drive. Any ideas on what I can do to fix this without losing all of my files? I have a lot of sensitive work data and cookies that took time to set up (authentication stuff for my boss' various accounts). Is there any way I can fix the driver from bios/UEFI? Or get windows recovery back somehow to try some other fixes that way? I found this but unsure exactly how to follow and if I can even get Windows recovery back to try it. This also sounds like exactly what happened to me but instructions aren't super clear to me (also, need windows recovery back). I will try literally anything as long as I can keep my data. Thanks so much for your help!