After a loooooooong google surch, the answer of cattlebaron was correct.
If you downgrade to XP and reinstall your drivers check your advance driver settings.
So if have also a Dell Wireless 1390 WLAN mini-card check the following advanced settigings:
Bluethooth collaboration> must be disabled
THX, and i don't give a f*ck about the out dated topic, it helped me and if my answer help others than I'm happy