I admit it does seem like you have taken all the "usual steps" to resolve such issues. And I'm at a loss to explain your problems. It may well be that some little bit of the Fritz program doesn't like some little bit of your computer software/hardware, but that's not particularly helpful to say!
Is it safe to assume that you've downloaded and installed the latest graphic card drivers for your computer?
One other suggestion, which is a bit of a fudge, is based on some succesful situations, and that's to
a) Turn off windows UAC (which is better in Win 7 than it was in Vista, but has caused issues in the past with Chessbase software - though as it's a security feature, I cannot be held responsible for any loss of data/dignity/trousers that results)
b) install by right-clicking the setup.exe file and choosing run as administrator.
Steve Lopez wrote:
I shouldn't need my own computer's permission to be able to run programs properly
LOL. Too true, too true!
Let us know if any of this helps...