I attempted to install the latest version of Ubuntu, on my laptop which had Windows 7 on it: the installation procedure went fine, it was right at the end when update-grub
collapsed.
Now it's stuck with this message:
GNU GRUB Version 2.02~ beta 2-9
Minimal BASH-like line editing is supported. For the first word, TAB
lists possible command completions. Anywhere else TAB lists possible
device or file completions.
grub>_
None of the options in the boot menu are successfull.
Best Answer
You will not be able to fix anything from that prompt (it is high-level kung-fu).
You need to boot again from installation medium and do a procedure called "grub repair". A lot of tutorials on the net, for example this one. If it fails again, ask another question with details on what you do and what errors you see.