HP Probook: BootDevice Not Found (3F0) after automatic BIOS update

Solution 1:

Finally I fixed the problem this way:

1) Booted from a Windows 10 USB stick (I created it using the Windows 10 Media Creation tool downloaded from microsoft.com)

2) Clicked "Repair your PC"

3) Opened "Command prompt"

diskpart — started the diskpart utility

sel disk 0 — select this drive if you have one hard drive in your laptop

list vol — see the volumes on your computer

sel vol # — instead of # put the number of the volume which is called SYSTEM and has a FAT32 filesystem

assign letter=Y: — mount it as a drive — IMPORTANT - pick a drive letter that is free - in my case it was Y:

exit — exit diskpart

dir y:\ — inspect that this drive does not contain any of your important data! - this is a double-check in case you would have chosen a drive letter (e.g. Y:) that would have been already occupied

format Y: /FS:FAT32 — this is going to format the boot volume

bcdboot C:\Windows /s Y: /f UEFI — this will fix the boot volume

exit — remove the USB stick and restart your PC

Source: https://www.thewindowsclub.com/fix-bootrec-fixboot-access-is-denied-error-on-windows-10