ok.
Please setup your firmware to Legacy mode, then boot you Ubuntu liveCD, choose "Try Ubuntu", open a terminal and type:
Code:
sudo mount /dev/sda1 /mnt
then open a file browser, and make a backup of the /mnt/efi folder (eg to a USB key).
then type:
Code:
sudo rm -r /mnt/EFI/ubuntu
if you confirm that EFI/Boot/bootx64.efi is a copy of EFI/ubuntu/shimx64.efi, please also type:
Code:
sudo rm /mnt/EFI/Boot/bootx64.efi /mnt/EFI/Boot/bootmgfw.efi.bkp
Then run Boot-Repair --> Advanced options --> "GRUB location" tab --> tick "Separate /boot/efi partition: sda1" --> "GRUB options" tab --> untick "SecureBoot" --> tick "Purge GRUB and reinstall it" --> Apply (don't change any other option)
Indicate the new URL that will appear.
Setup the firmware in UEFI (non-Secure) mode.
Reboot the pc, and indicate what you observe.
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