I attempted to install Office 2013, it hung at about 85% (guess). I let it sit that way to see if it would do anything, 8 hours later, still hung, so I ended all processes associated with the install and started the manual clean-up. I now have the issue where there are certain UNDELETABLE registry keys leftover from the corrupt install. I have been working on this for days, tried everything (cleaning the registry, DEFRAGGING the registry, system restore, which was unsuccessful. I even tried the tool released by microsoft that's supposed to solve this issue). BTW, everything EXCEPT the undeletable registry keys are totally wiped clean off my computer. When I attempt to reinstall, it gets to about 5%, and crashes, every time! Where do I go from here? I want to use Office 2013, if possible, without having to reinstall windows, because I just did that a week ago. HELP!