This failed update happens a lot. Try and search for it (google). Ranges from Kernel errors, trying to update an older driver
on top of another one with a lower compatibility rating. Did you also get a Windows Update error (some number)? Anything else that might help narrow things down?
Also can try...
start -> eventvwr.msc (in the search box)
I would check through your logs and look for errors. I would clear the event viewer logs first. Then try running the updates again to see what new events pop up after the reboot.
On the right side "filter current log" I would select only critical and errors.
See what comes up...