I downloaded Virtualbox 5.2 hoping maybe that might - I don't know - overwrite that bugger, but I don't understand how to install programs on Linux. Anyway, Synaptic Package Manager can't fix it, and I've tried several commands to purge everything with a Virtualbox label, but that one file keeps hanging on.

It gives me a message that is cut-off and the only thing I can view of it, tells me to get rid of any 'third-party repositories' - but I don't know what a repository in Linux even is. It tells me that I have one broken dependency, and to fix that first (virtualbox-ext-pack version 5.1.30-2). I've looked online for suggestions, but I can't get past uninstalling the program.

I had version 5.1, and it worked pretty well until it stopped launching one day. Therefore, for me to understand any helpful suggestions, it will have to be in the smallest baby-steps with no assumption that I know even the simple things like 'run it from the root'. I mention that because up until now, I have been exclusively a GUI guy.

I'm brand new to this forum, and very new to Linux itself.

Completely uninstall virtualbox