Yes you are right..i also tryed to install the sp1 win 7 and still they were still yellow ? on the hardware list.
I contacted amd and asked em the same about the missing usb drivers that SHOULD be in a chipset driver and SHOULD work in sp1 win 7.
I understand its hard to get drivers for win xp, but win 7 is still new, so i should perhaps contact an hp worker like he did and ask for a usb driver ?
The problem is so : My mother bought the pc in a store with me, and i told her i woould install win 7 for her because she is use to that system from her old pc, and she is NOT a computer person..trust me..and i dont want to spend 1 more minute with win 8..i rather spend my whole life on getting this pc to work with win 7 rather than win 8.