For me, on a Dell Inspiron 15 3000 I had to do the following to get rid of the Password: and PIM: prompt after changing OS. Make a bootable Windows USB (DVD kept failing). I used Windows Server 2019 but I don't think that matters really. You just need to get to the command prompt. Add BOOTICE to the USB. Boot into Recovery via the UEFI BIOS and select to boot the USB. Go into Recovery mode and get command prompt, Use BOOTICE to modify the settings (as above)... however this didn't help so.. I repeated...
For me, on a Dell Inspiron 15 3000 I had to do the following to get rid of the Password: and PIM: prompt after changing OS. Make a bootable Windows USB (DVD kept failing). I used Windows Server 2019 but I don't think that matters really. You just need to get to the command prompt. Add BOOTICE to the USB. Boot into Recovery via the UEFI BIOS and select to boot the USB. Go into Recovery mode and get command prompt, Use BOOTICE to modify the settings (as above)... however this didn't help so.. I repeated...