Solved BSOD "Boot Device Inacessible"

Hi everyone,
I recently built a new gaming/video editing PC, and I'm running into an issue I can't seem to be able to fix, if any of you see what's going on, that would be incredible.

I correctly built the PC itself, it posted at first start, then installed Windows 11 on my NVMe via a USB stick with absolutely no issue (I disconnected other drives to make sure Windows instals to the correct drive). Access Windows, start installing my video editing sofware and Mobo/GPU drivers.

I then connect the 2.5" SSD from my previous rig, wipe it via the Bios, to make it my secondary drive on the new PC. And from that point forward, everytime I boot, I get this BOSD.

I have tried:
- Making sure the Boot option one is the Windows Boot Manager
- Using the Windows troubleshooting tool which doesn't find anything
- Reseting the CMOS thing by shorting the connector

- I also tried to go for a clean reinstal of Windows with the stick, which started working, but after that, Windows doesn't see my NVMe when asking me where to instal it (Nothing shows up)

Config:
- i7 12700K
- Gigabyte 3070 8g OC rev.2
- TUF B660 Plus Wifi D4
- Trident Z RGB 32Go CL18
- Crucial P3 Plus 2To M.2 PCIe Gen 4 NVMe SSD
- Gigabyte Aorus Waterforce 280
- Corsair RM1000x 80plus Gold

Here are some photos:
BSOD :
Bios1 :
Bios2 :
Bios3 :

Hope all the info helps, sorry I'm not an expert so if you need more, don't hesitate to ask me.

Thanks a lot for the quick answer, here are some precisions:

- Once first in Windows, I did instal the Motherboard drivers, but now that you mention it, for a couple of them (can't remember which ones exactly), I extracted them with Winrar, then launched the app file, and nothing happened.
I downloaded them from Asus, and made sure they were the ones for my specific Motherboard.
Could it be that the SATA driver didn't instal itself?

- Re: the SSD wipe: this is the SSD on which Windows was installed on my previous PC, that I now want to use as secondary (since Windows is now on y NVMe) so I googled how to wipe it, and many "trusted" links pointed to the "Safe Erase" ASUS feature. That's what I used to wipe it clean. I made sure to target this one, and not my NVMe.

- For the Windows troubleshooting tool, I mean the panel of options you get after 3 restarts, just to clarify. I tried:
- Start up Repair: it wasn't able to repair it
- Uninstal update: I found a YT video in which it was said that this can fix the issue, so tried that, bu it didn't work.
- System restore: I tried that too, but there was nothing (probably because I had just made a fresh instal right?)
- UEFI Firmware: Didn't try that simply because I have no idea what that is!

Hope that helps clarify my situation!

One other thing that just came back to me. Before the issue happened, I beiefly enabled XMP. but then deactivated it because I read it could lead to some instability issues. But I'm guessing since the issue is about the Boot Drive, this has nothing to do with it? Again, I only have little to moderate PC knowledge.

phillpower2 said:

Thanks for the additional info, I think I got everything covered there.

Would suggest that you do the below;

Physically remove from the computer all but the SSD that you want to install Windows to.

Restore the MBs default factory settings in the BIOS, they are sometimes listed as one of the following " factory defaults" "most stable" or on newer boards "optimized" please note that if you have both the "most stable" and the "optimized" options in the BIOS you should choose the most stable" option as in this instance the "optimized" settings are a form of overclocking that can cause instability.

Save the new settings, exit the BIOS, restart the computer, to again enter the BIOS, check to see if your SSD is listed, if yes, disable secure boot set the boot order so that your USB device is first in the boot order, save the new settings, exit the BIOS, place the USB device with Windows on it into the black USB 2.0 port on the back of the computer, restart the computer to see if you are able to install WIndows.

Click to expand...

It unfortunately didn't work,

I made sure the only drive connected was my SSD, searched through the entire BIOS to make sure I was using the right feature, even went as far as to search the key words "Default", "Factory", and "Optimized" (In the attached photos), the closest thing I found was a main menu option labeled "Default". I used that, * couldn't disable secure boot, only could change settings inside it *, then saved, restarted, plugged my thumb drive, made sure it is set as first boot, restarted, got the beginning of the windows install, but my SSD doesn't appear.

It's so frustrating cause it's probably a minor thing, especially since for about an hour, everything was working perfectly...
Really appreciate your time and effort btw. If you're onto something with the new info, would really like to try, otherwise, I think I'll uber to a technician.






https://imgur.com/raGy60X

One additional info, but I'm pretty sure it's useless, but who knows: my Aorus Waterforce cooling system, is a bit special, meaning it is not plugged to the CPU fan, only 1 SATA connector, and 1 USB connector (delayed my build by about an hour to make sure of it). So for each reset of the Bios I have to set the CPU fan monitor to "Ignore".

It's finally working. The technician said the issue was an incompatibility between an Intel driver and my motherboard, and that the fact that I installed Windows 11 may have played a role as well.
In any case, thank you very much for your time and efforts.