BIOS settings
Open BIOS settings in Windows, that is press f10 when the machine was starting. Then select EFI SATA CDROM Drive. This will open the grub menu which gives an option to install Ubuntu.

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Open BIOS settings in Windows, that is press f10 when the machine was starting. Then select EFI SATA CDROM Drive. This will open the grub menu which gives an option to install Ubuntu.

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