It may have something to do with a system change
How to Fix 'Inaccessible Boot Device' Error in Windows 10 | Blue Screen
Inaccessible Boot Device error on Windows 10 or 11 is a "blue screen of death" (BSOD) error that prevents Windows from booting properly. Sometimes you may not be able to boot into Windows at all, which can be a bit disconcerting.
However, fixing an Inaccessible Boot Device error isn’t that difficult once you know what’s causing it. It’s usually, but not always, the result of changing something in your system. But what exactly does Windows mean when it says the boot device is inaccessible?
The Inaccessible Boot Device error means that Windows was unable to access the system partition (i.e. your hard drive) during system startup. These errors are more common on PCs with an SSD and can be caused by a number of things.
