In this case, I'd do this:
1 The standard Windows 8 renew or refresh (the one that leaves your files intact, but brings Windows back to its initial state)
2. Set Windows Updates to manually.
3. Do all updates until the ones that you suspect.
4. Make an image backup to an external disc, so I can go back.
5. Do the remaining updates one by one and check after each one if it's still fine. Once you found the culprit undo it and set it to hidden, so it won't download again.
Kees
I have my update set to download but choose what and when to update.
Since the update my laptop has gone nuts.
It first started not allowing me to get on internet, then its now allowing me. A message appeared "execution faled" or something like that.
My Avast has disappeared like a whipped dog.....cant get into "uninstall programs" to see if its there?
Control panel is off the planet and takes ages to load, then wont load diagnostic files - just shuts down.
System restore said it could not do the action required when I restored it to the point before the updates......
Am scared to touch anything as I have internet access but dont know if I am protected.......
Thanks if you know what this is????

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic