Windows 7 and Vista come complete with a NET framework level which is backward compatible with NET 2.0, so they don't need any pre-reqs.
XP needs you to install 2.0 which is an option in WUD, before Easy can run.
If you can't run it on W7, there must be a problem with the OS.
I believe I'm correct in saying that there are over a million copies of EasyBCD out there in use all over the planet ( I think I remember CG mentioning it somewhere, but I await correction if that's an exaggeration)
A complete failure to run would have been noticed before I imagine, if it were systemic.
Did the 7100 install go OK ?
I had massive problems with it BSODing during setup, and failing to support my graphics and monitor, and it took me a week or two, on and off, to research, circumvent or fix all of the problems and get a stable system.
Did you get a clean install ?
It sounds like you've got a broken system to me.
You could try downloading and un/reinstalling NET 2.0 if it will let you, or probably better and quicker, select NET 3.5 (or whatever the 7100 level is now) in Control Panel/Programs and Features, and select "repair" in the maintenance options.