Hope you find a solution.
As suggested by other people, try to recover to the configuration before the messy update.
Try to disable not needed services and other stuff that get reenabled when such forced updates are performed, those stuff are transforming any good computer in a turd
My 2 cents tips after you have finished the fireman mode : when I am on the move, I have one or two hard drives with me in case of any issue. One for data and one for the OS. I do not know if you have more than one HD in your laptop, if so it is a good idea to have one dedicated for the data and one for the OS. Next, having a spare HD (with external case) for each that you synchronize periodically (daily for data and weekly for the OS) so in case of issue just like you have, you can quickly swap any HD (need a few tools), you do not loose too much time, you reduce the risk of loosing data, and you avoid to be stuck.
May be having 2 laptops seems a bit crazy when you are on the move, it can be helpful when you have this kind of joke (some time spent to perform updates and data synchronization)