@lucio2
You could remove grub from MBR, but it is a bit risky as you have to use dd to write 0's.
Powerful command, but often misused and then nicknamed "dd" Data Destroyer
http://www.linuxquestions.org/questi...ommand-362506/
I have not seen it done on a gpt drive, this is for MBR, but the protective MBR in gpt should be the same.
Backup the MBR to mbr.bin file e.g.
sudo dd if=/dev/sda of=mbr.bin bs=446 count=1
Zero out MBR only of sda Use 440 if windows as serial number is between 440 & 446. (I think only BIOS)
dd if=/dev/zero of=/dev/sda bs=446 count=1
In the protective MBR, you want to leave the single partition table entry that says drive is gpt partitioned. That is so old partition tools like fdisk see drive has gpt partition and do not attempt to reformat it without at least asking.
It seems like the error is before, grub or at least before grub starts loading kernel. But becuase you only have one system installed you do not normally get grub menu. If you press escape which usually works with UEFI , or perhaps hold shift key do you get grub menu?
Last error seems related to video. What video card/chip?
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