XPS 8300 365 Bluetooth problem

Hello,

I have the new Dell XPS 8300 with Windows 7 Home premium but the OS detected the Dell Wireless 365 Bluetooth Module only at the first boot.

My Motorola Defy and other bluetooth devices finds the XPS 8300 bluetooth module, but there is no reaction from the Windows 7 OS. There is no Bluetooth device in the "Device Manager".

Rarely the 365 Bluetooth Module pops up for a couple of seconds in the device Manager.

I have tried the solutions mentioned in this post:

http://en.community.dell.com/support-forums/network-internet-wireless/f/3324/p/19296857/19561310.aspx#19561310

but none of them works for me.

I also tried to find and disconnect the Wireless 365 Bluetooth Module in the XPS but i cant find it.