dear same problem:
i ran through this problem, and I have tried every possible solution, even with fdisk,formatting, third party during setup,drivers, etc etc etc for hell windows
iam a doctor, and this is brain insult
very big advice--------------------------hell to windows
i have changed to linux in very easy way
now my laptop had ubuntu 9.04 and mandriva 2009 powerpack and many other partitions of my work
believe or not ,
swear god I did nothing , no drivers, no problems ,nothing atall
my wireless,my display, audio, video,every thing is perfect
it is not advertisement , I have no time for that shut
it is what happened with me