Process of elimination. You could try things like format the drive and reinstall the OS and using a USB keyboard on the laptop to narrow down the possible sources. Keep going until you have your answers.
Canning dried beans seems exessive to me, though I love canning in general. Dried beans are well preserved as-is. Just soak the night before and cook in a pressure cooker to save time and energy.
I save the effort of canning for things that won't naturally preserve well. Fruits, jams, vegetables, pickles, meats, whole stews, tomatoes etc...
Big fricken caluses on the bottoms of your feet.