I Downloaded updates and after restarting the computer, a message appeared saying
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>_
I've read that you can use the boot repair, but how if I cannot access the operative system, Ubuntu is the only operating system in the computer.