I just updated Ubuntu 14.04 to 16.04 using update manager. The updated installation will not boot to the desktop. It will boot to the grub menu. The motherboard is a MSI A78M-E35. The 16.04 live DVD will not boot either.(It does boot on my Gigabyte motherboard computer). It will boot to point of being able to press spacebar on the "keyboard icon" and see other options. The 14.04 live cd required acpi=off to boot, but this does not help with 16.04. The install on the hard disc either reboots or just sits with a blank screen when Ubuntu is selected from the grub, or advanced options, or recovery menu.