It baffles me, but I'm no IT guru either.
As I have said, consider yourself lucky..... Had 32 and 64. Had hardware compatibility issues on both.
Maybe you just don't know what you are doing?
In the years I'm involved in IT, I've never come across new hardware that isn't Windows 7 Compatible unless you buy some fong kong device. Doing 2 to 4 installations a day, I'm still to have an issue.