Have had huge problems with Dell XPS laptop and Bluetooth. Originally supplied with Vista [yuck] and later updated to W7 and that is where my trouble started. I'd try Dell or the manufacturer for the original software drivers and you might have more luck, in my case support stopped at Vista [boo!]. I have also had some problems pairing some Sony (was a huge fan but disappointed of late) products to other BT devices (Xperia to car for example) when other devices worked without issue. So I'd check for drivers on the PC in this case, uninstall existing device and install the manufacturer latest version which is dated end 2011 and seems to be W7 compliant ftp://ftp.dell.com/Pages/Drivers/studio-1749.html