Comment 642 for bug 1734147

@axt thank you for the update. But the problem is my BIOS has now become read only. Earlier last year, I tried to upgrade ubuntu from 17 to 19 and since then the BIOS has become read only. If I make any changes it will not get saved. That's my main issue.
I cannot boot from USB,
I cannot boot from DVD etc..

My default first boot device is Ubuntu and then windows and then USB and network.. etc..

Even if I do f12 and select boot from USB it doesn't work.

@axt I even tried flashing the BIOS it does not boot from my Pen drive. I downloaded the latest version of UEFI as per BIOS Update for Windows 7 (32-bit, 64-bit), Windows 8 (64-bit) , Windows 8.1 (64-bit), Windows10 (64-bit) - Lenovo Z40-70, Z50-70
 and tried to execute the package from windows 8 os but after reboot nothing happens. the Bios version is not changed and the bios is still not saving any changes what ever changes I do in it.

now I have removed the ubuntu and deleted few partitations of Linux using partition magic.

but now the system partition where the UEFI files are there is still there.

Last night I tried to run pratation magic. Assigned a drive letter to the system partation
then using powershell with admin rights I tried to replace the grubx64.efi.signed in UEFI folder under Ubuntu but it didn't work

Now I have removed the Ubuntu folder from that partition and now it directly boots to windows as soon as I start my laptop but my main concern is to fix the BIOS which is not saving my changes in it.