I found the solution for the bluetooth troubles on dell laptops.  Do the following : 1. Use the registry editor (Regedit) to locate and expand the following registry key: 'HKEY_LOCAL_MACHINE\COMPONENTS\DerivedData\Components\' 2. From the long list on the left, delete the following key: 'x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.762_none_0c178a139ee2a7ed'. 3. Restart the computer and reinstall bluetooth drivers.  good luck. Wim
If I start my studio xps 1640 the following error is on screen: BTTray.exe cant initialize (0xc0150004)! :emotion-6: I installed Widcom Bluetooth completly, but there is no solution. What can I do again? Thank you for any answers and solutions. Gerhard
Widcom Bluetooth/BTTray.exe