Windows 10: UEFI / Legacy BIOS Mess and Windows Update

Hi

When Windows 10 ran its automatic update I got a message "Windows can't be installed because this PC has an unsupported disk layout for UEFI firmware". I think this is probably my own fault - I remember having boot problems a while ago (can't remember what caused them initially) which I eventually fixed without really understanding what I was doing.

The BIOS settings are for UEFI, not Legacy.

However, DISKPART says the disk is using MBR:




And I think that's what Disk Management is saying too:




And this is from bcdedit:




I'd really like to avoid doing a clean reinstall of Windows 10 if possible. I vaguely recall that when I had boot problems I switched the BIOS setting to UEFI because that was the only way I could get my machine to boot after messing around with various boot record rebuilding tools that I really didn't understand.

Can anyone help me with this mess please?

Windows build 17763.1282

:)

 

Legacy to UEFI

I'm debating moving to UEFI form my now legacy BIOS (Award Software Int.) the mother board is a GA-Z68XP-UD3 rev1.0 on the the following link it shows a UEFI BIOS U1J )UEFI BIOS)

GA-Z68XP-UD3 (rev. 1.0) | Motherboard - GIGABYTE Global

Currently I'm running the legacy F10 BIOS. Does installing the UEFI BIOS automatically take care of everything to get to the UEFI BIOS? Installing the UEFI BIOS following the instructions using the Q-flash method GIGABYTE How to Reflash Motherboard BIOS

What's steps do I take and in what order?

Much appreciated

 

Return to Legacy from UEFI - BIOS

Hi There

A while ago I was helped here to change from Legacy to UEFI. However, since then it seems, the Laptop (Latutide E6420) is running a bit slowly which was otherwise very quick until then. Now, it takes nearly a minute or so to boot up or shut down or even
to close a file. Just a couple of days ago, I updated the latest BIOS for this machine recommended by Dell.

I tried to go back to Legacy but the system was asking me to reset to UEFI or face boot problems. One advise said that I could disable 'Secure Boot' in Boot Manager and reset to Legacy. However, the Boot Manager is listed under UEFI Boot process and it only
starts Windows. Is there any way as easy as I changed it? This is absolutely under the hope that all will be as normal as it was in the beginning. Please give your thoughts and advice. Thanks.

 

Problem Regarding Bios Change from UEFI to Legacy

I have hp pavilion p045tx with windows 10 pro. I recently install Ubuntu with windows 10 so for that I convert my bios setting from UEFI to Legacy mode for install third party software like wireless Driver and all in Ubuntu.
But after every restart the bios setting change to default and that is to UEFI mode and that will cause an problem of no OS detect. Every time I have to go to bios setting and enable the legacy mode to start my OS. Can anyone suggest me what to do in this
case.