Have you encountered this kind of blue-screen error? Irritating, huh? Well…
Just found out recently after having to experience the same BSOD for 3 times in a row. I tried googling for the answer and fortunately found a convenient explanation and fix in the Microsoft website.
As per Microsoft, the error occurs due to the race inter-lapping of threads reading and written causing a the PCI root node to be missing from the device tree. Hence, the inaccessible_boot_device because the storage is now missing. It’s kind of a brain-twister really but it goes something like that. To go through all the techie-jargons, check out the Microsoft explanation on this. 
To resolve this error, download the Microsoft Hotfix.
