It reads " installing 1 of 7 Updates"
" Do not shutdown Computer" Etc. etc. Etc.
. Every Time!
How long have you waited for the installs to finish before overriding
and killing things?
I have had a couple upgrades in the past that took over 15 minutes
before the first update was finished and the second began. True it was
on my older and slower computer so things like that were expected.
You might need to check the log files and see what, if anything, is
failing during the upgrade process.
You might get more specific assistance from others if you provided a
list of the updates in the order your system is trying to install them,
or at least the first one.