AutoCAD Inventor :: Computer Freezes When Opening IPT File?

I just became a part of the Student Community here, and downloaded Inventor Pro.  I actually had some problems right off the bat: some kb971153 file was missing, so I had to find a hotfix from MS and install it before it would let me install Inventor.

Anyway, I opened up Inventor, and found that within seconds of loading up a new .ipt file, my computer would freeze.  I can confirm that ctrl+alt+del, mashing several other buttons in frustration, and thinking of creative ways to use four-letter words to describe the situation don't work.  As far as I can tell, .dwg files work just fine, it's just the .ipt ones that are kick my blood pressure up a notch.  

If I remember correctly, the hotfix had to do with individual licensing or something, so it shouldn't be the cause right?  Everything else on the computer works just fine; if I downloaded the wrong fix or something, I figure I'd see some problems with the computer overall.  So I'm lost.  Maybe it has to do with the stuff the .ipt file is trying to load or access but, either way, it's causing me to have to turn my computer via power button, something I'd rather avoid.