Just want to share a problem that kept crashing my machine and creating BSOD on reboot with INACCESSIBLE BOOT DEVICE for a whole month.
It seems that Windows 10 will erase the AHCI SATA Driver (ahcistore.sys) every once in a while . Probably related to sleep. It tries to find a suitable alternative, can't find one and thus renders your system unusable. A reboot will give you an unfixable BSOD with INACCESSIBLE BOOT DEVICE. This will happen even if you set windows NOT to update device drivers automatically or not to install updates right away.
Funny enough, a system restore works. So system restore will use standard IDE drivers, but can't figure out that there are no SATA drivers in the system. Ugh.
I discovered this after a month of painstaking reboots and constant backups and restores.
I found two solutions that worked (for me)
I suspect that the Spectre and Meltdown correction code are somehow involved. Once they got installed, my system went unstable.
Hope this helps other people
* Here's my saga for those interested: Month of BSOD – Thanks Microsoft and AMD – Amar Musings