hi!
did you see correctly files setting usb as 1.1?
You can also disable usb 2.0 from within windows, as shown below (I know, my windows installation language is italian, but I think you will find the way anyway...)
yes, maybe under linux it could work (I've not tried for now) but it would be a lot better to fix the problem under windows.
It could also be a bad quality cable problem, but I think that most probably it's a drivers problem...
keep me update!
regards
francesco