Note this checks against a local file and not online. It's entirely possible the card/driver combination is supported but wasn't available or tested when the product was released. Even then, a lot of graphics cards will still allow you to enable hardware acceleration despite not being "supported".
Something else to note, is there may be conflicts between on-chip graphics hardware especially with laptops. You might need to change power settings, or disable the on-chip graphics, or disable or remove any automatic switching systems (NVidia Optimus is one of the main culprits).
Of course, you might really have hardware that AutoCAD just doesn't like.
