If your PC is not booting and showing an "Inaccessible Boot Device" error, then here is a fix to resolve this issue and make your PC function normally. The inaccessible boot device is a common ...

Fix Your PC/Device needs to be repaired, The Boot Configuration Data for your PC is missing or contains errors with error code 0xc00000f.

Here's a workaround Microsoft suggests if your device is failing to boot after installing the October 10 Patch Tuesday update.