I have an MSI x99 motherboard with a Samsung M.2 1TB stick with Windows 10 installed on it. After I installed an updated nvidia driver chrome looked strange so I rebooted and got an inaccessible boot device error. I've researched online for ways to fix it but so far nothing has worked. In general, what I've seen online is booting off the Windows 10 installation media and using diskpart and bootrec in the command prompt. There are a couple variations of the commands out there. Most involve assigning a drive letter to a particular volume then running bootrec on it. I'm getting
access denied from bootrec /fixboot and
the request system device cannot be found with bootrec /rebuildbcd.
diskpart sel disk 0 list vol sel vol 4 assign letter=V: exit V: format V: /FS:FAT32 bcdboot C:\windows /s V: /f UEFI
Here's what I see -