I recently reinstalled my Alienware m15x. Unfortunately Bluetooth drivers did not come with the reinstall disc so I found drivers here:
http://www.dell.com/support/drivers/us/en/19/DriverDetails/Product/alienware-m15x?driverId=YKMX4&osCode=WV64&fileId=2935003823&languageCode=en&categoryId=NI
There were several failures during installation.
I tried to uninstall and reinstall the drivers but receive the same errors twice.
When trying to pair it with two iPhone 5's, my pc detects the phones but the phones don't detect the pc. My phone does detect and connect to other Bluetooth computers and devices.
Also I am running Windows 7, I am not under warranty, and Bluetooth did work before the reinstall.