Ok, so Win10 on one laptop is saying that it needs to be updated. I say "install updates" and it gets to something like 18%, reboots, and says the update failed.

I've tried 4 or 5 times, over the last month or two. I've tried rebooting first and making sure nothing is open, but it still fails.

How do I figure out what component of the install is failing? and how do I fix that?