Windows 10: Microsoft Boot Option in My Bios

Hi,


I run windows 10 on a Dell XPS 8920 computer. Until just a few days ago there were only (3) boot options in my bios and they are Windows Boot Manager, Onboard NIC (IPV4) and (IPV6). Now, suddenly, out of nowhere, there is a fourth option named (microsoft).


I have no idea where this fourth option came from or why it's on my computer. Microsoft certainly never told me in anyway that they were changing or adding a new boot option in my bios and I never asked them to do so. I want to know how and why this additional option was put on my computer. I'm concerned that this may be a security breech because Microsoft didn't tell me that they were making changes to my computer. Does Microsoft even know that this kind of change is happening? So far, all of the tech support people who I have spoken to say they are completely unaware of this issue. The Dell Support representative who I spoke with connected with a Microsoft representative who said he had never heard of such a change taking place and dismissed my concern. Of course that only heighted my concern and made me more determined than ever to find out why the boot bios on my computer has been altered.


If somebody could enlighten me about this change I would seriously appreciate the help and the education.


Thanks.


C.C.

:)

 

Powercolor RX480 BIOS required

Find the unverified bios option.

 

UEFI boot options disappeared from BIOS; now getting reboot and select proper boot device

In short, I need to get the system/BIOS to allow UEFI booting of the SSD.

Computer started up today with default BIOS settings.

• Only SSD 1(Windows boot) and SSD 2 were listed in BIOS; HDD 1 and HDD 2 were not visible
• System would not boot. Gave the 'reboot and select proper boot device' message
• Boot menu has no UEFI/EFI (or Windows Boot Manager) entries anymore

I went into Partition Magic/Gparted and confirmed :

• All drives are still showing
• All drives' data is in tact [EFI volume/partition is still listed (and can be browsed/files accessible)]

Gparted print out (note dev/sda2 apparently that is normal behavior) :

/dev/sda1 (locked) EFI System Partition--Fat32--/media/sda1--100.00mb--46.81MiB--53.19MiB--boot,esp
/dev/sda2 (exclamation mark) Microsoft reserved partition--unknown file system--no mount point--128.00MiB--unused spaced--msftres
/dev/sda3 basic data partition--ntfs--/media/sda3--118.58GiB--70.78GiB--47.80GiB--msftdata
/dev/sda4--ntfs--/media/sda4--450.00MiB--327.71MiB--122.29MiB--hidden,diag



As I am able to boot Windows installation from USB, I tried the standard startup repair. It said it was not able to fix any problems.

Next I tried to repair the EFI with Diskpart in the shell:

• sel vol 1 (note that Diskpart states EFI partition is 'hidden')
• assign letter=z:
• cd /d z:\EFI\Microsoft\Boot\
• bootrec /fixboot
• bcdboot c:\Windows /l en-us /s vz /f ALL

It completed all tasks successfully. Unfortunately that did not work.

Other things I have tried :

• Removing CMOS battery and replacing with a new one - my HDD started showing up again after doing this.
• Using the old MBR commands(in hopes it would force the Windows startup repair to recognize and fix a problem)

bootrec /fixmbr
bootrec /fixboot
bootrec /scanos
bootrec /rebuildbcd​

• Loaded BIOS 'optimized'/defaults (the system did this already once before, hence why I am in this situation, though doing it manually seemed like an option worth trying. Note that after doing this and restarting the system, HDD's stopped showing again)
• Removed new CMOS battery and left it out of the system for thirty minutes
• Formatted EFI and msftres partitions, then rebuilt the EFI boot records

In summary, am looking to force the BIOS to see the EFI partition on the SSD boot drive, as it is not an option any longer.

 

Booting to BIOS

look to see if it has some sort of "boot to bios" option. im lost with this one....i cant think of much more than what ive suggested. Most Motherboards have different Bios/booting options. Try them all , see if makes a change.

if nothing works, time to contact the Manufacturer.

Sorry I couldnt be of help