I finally managed to get rid of these errors! Here's what I did: 1. Problem: Disk Management -> Shrink Volume displayed the following error: Solution: Do not remove Disk Defragmenter (and Virtual Disk?) 2. Problem: Office 2010 Pro Plus encountered an error: While you could simply click "Ignore" when installing it manually, you couldn't do that when installing office silently (installation rolled-back). Solution #1: Keep Japanese language (I didn't want to keep it) Solution #2: Keep (or copy back to Windows\Fonts) the following Japanese font files: meiryo.ttc msgothic.ttc msmincho.ttc However, I did keep Estonian and Russian language because I need them! So if you're still getting Error 1907, it must be something to do with these 2 languages or something else you removed. The problem I had with Windows Explorer restarting magically disappeared. If you find my post helpful, please comment. And sorry for any grammar mistakes I may have made.