for the Linux experts, WINE problem

[Husar]

Ok, yesterday my notebook overheated I think(well, it just turned itself off) and today Ubuntu won't boot anymore, it just shows the boot screen but doesn't go any further, my USB stick with an old Ubuntu version somehow drops me in a Bash console on both computers instead of starting as it used to. Is there any way I can repair it or would you advise me to reinstall everything (again....)?
Might try a different distro in the latter case, but one that doesn't require me to use the console to get the basics working and install programs might be useful(unless the commands are simple.

Oh yeah, not going to that Linux "course" because it would take too much time, unfortunately, I have more important subjects that have to be a priority now.