I have exactly the same issue.
Except when I first got the opportunity to be able to update my PC completely froze after about 5 minutes of downloading, from the audio playing on another program to the display. I had no other option but to turn my PC off by the physical power button by holding it down.
Since then, I’ve been stuck on this screen and I have tried everything from clearing the cache, my community folder, deleting the config file and checking for the latest windows updates / windows store updates to no avail.
And I don’t know how it can fix itself, as in order to update it needs to check for them first, which it does infinitely.