HDD not detectable, OS will not boot if connected

Mar 29, 2018
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Two nights ago my computer BSOD'd with an unexpected_store_exception. The next day when I booted up I noticed my D:\ drive was missing. It was not present in Disk Manager. I restarted my computer, and this time the OS, which is installed in C:\ refuses to load, instead BSODing with an Inaccessible_Boot_Device error.

BIOS setup does not detect the D:\ drive (C:\ can be detected.). If the SATA is unplugged then Windows boots without a hitch.

If anyone has advice regarding this... Thanks.

Regards,
wanderer28