Does gnu grub2 terminal run instead of ubuntu?

Question

ubuntu

In general, I decided to put myself ubuntu instead of windows 7, downloaded everything from the official site, wrote the image to a USB flash drive, installed it, and the grub2 installation got the error "unable to install grub2", and without this the operating system itself would not be installed, I restart the laptop , and the gnu grub 2 terminal is loaded instead of the operating system, what should I do? Even system restore does not work on a laptop, the terminal also starts instead.

Answer 1

there is a manual mode
where there is a choice of the grub installation partition,
you can always select the previous edition and update