There's not much of a hint here as to how far GRUB might have got, which makes it rather difficult to guess at the problem. Were there any visual clues at all?
Can you try re-upgrading, working out what the usual grub-install invocation is, adding --debug-image=all to it, then rebooting and seeing what the last screenful of output is? ** Changed in: grub2 (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1341618 Title: grub 1.99-21ubuntu3.15 will not boot on some hardware To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1341618/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs