grub2 - Grub menu not appearing after reinstall and boot repair

I reinstalled Ubuntu (it was working right) and now the Grub menu is not appearing. I've used the Boot Repair tool too, it just shows a black screen and the underline flashing.

http://paste.ubuntu.com/5717138/

Thanks.

Have you tried it with command in terminal? Just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command(s) below:

update-grub

if this does not help, then try

apt-get install --reinstall grub

then

grub-install

and finally at end

update-grub

this should work.