Educational software includes the current version and 3 versions back. You can try to install Inventor 2015 instead, Inventor 2012 is not supported on a Windows 7 32bit operating system any how. Then download using a Browser Download but uninstall Inventor 2012.
When you download the software, you must download the correct version of MDT. The MDT2009-Disc1.zip and MDT2009-Disc2.zip downloads are designed to look for a type of 'Inventor" installed on your computer. The files are named the same but are actually different. For example, if you just download the first MDT2009-Disk1.zip, you will not know if it works with Autodesk Product Design Suite/Inventor 2012 or with AutoCAD Inventor Tooling Suite 2011/2010. 2b1af7f3a8