BSOD Inaccessible Boot Device after installing new graphics card

Hello everyone, so I installed a new graphics card into a computer that was custom made a few years ago, after the old graphics card overheated and was damaged beyond repair. The computer itself was off for about 6 months or so and had just been installed with windows 10 for not that long(a few weeks or so maybe). At first the computer booted up and seemed well but then would BSOD and restart. I fixed this by disabling IGPU Multi Monitor in the UEFI. It seemed fine for two days straight in which me and my roommate did not turn it off, but when we did, the monitor would turn off but not the system. After several minutes of not shutting down(it also said that there was something in the background still running but wouldn't say what), my roommate forced shutdown. The next morning it came on to the inaccessible boot device BSOD, where it then did the restart loop of going to the advanced startup options menu.

I've been stuck ever since. I'm guessing that after being off for 6 months, windows 10 was still trying to update. I don't know, but one of the things that has happened is that when I go to diskpart in the recovery command prompt, here is the output.


Volume ### LTR Label Fs type size status info
Volume 0 F dvd-rom 0 b no media
Volume 1 C System Reserved NTFS partition 100mb healthy
volume 2 D NTFS partition 930gb healthy
volume 3 E NTFS partition 450mb healthy hidden

Windows 10 seems to not be on the system at all. I tried bootscan /scanos and it only found the windows old folder from windows 7 before windows 10 was installed. I tried doing a system restore from 2 restore points that It had on back to back days. The earliest was the critical windows update, but I tried restoring from the latest one after the updates were installed I believe and it just went to the BSOD again after finishing the restore. When I decided to try the other one, I couldn't because it was gone for some reason. I tried doing the rest of the bootrec commands to no avail. I tried resetting the defaults on the UEFI to no avail. What is going on here?

Thank you for any help you guys might have.

P.S. I also used powercfg utility in the command prompt and got a dozen errors that show up in the report. Half of those were errors saying "devices with missing or misconfigurd drivers can increase power consumption."

I recommend starting over by doing a Clean Install of the latest available code which I believe is 14393 (the Anniversary release).

Follow this tutorial: Windows 10 - Clean Install

If you have data on hard drive you want to save, you can use Kyhi's rescue ISO to create a DVD or flash drive to boot from to save the data.

See here: Windows 10 Recovery Tools - Bootable Rescue Disk from KYHI

See responses below:

Tsurani said:

One of the things I did was load the uefi defaults. Does this turn back the uefi version to 1.00? Windows 10 is only compatible with version 2.0 or above as far as I know.

Sorry, I don't know.

Also, there is an instant flash option in the uefi. Should I just do that or would it be better to go to the motherboard website and get the latest update there?

I don 't know what Instant Flash is. I always get the latest BIOS from the manufacturer and install it under Windows.