CSR Bluetooth is one of the common Inbuilt Bluetooth devices on most laptop, desktop commonly uses the CSR Bluetooth dongle since most desktop does not have the inbuilt Bluetooth device. What you need to do basically install the drivers CD (that come with it when you buy it) or get the Bluetooth drivers from your notebook/device manufacturer. This method worked for: -Windows XP, Vista and Windows 7. Not yet tested with Windows 8. -CSR and other Bluetooth device. BLUETOOTH STOPPED WORKING BUT, sometimes, even the drivers installed properly, your Bluetooth still does not work. This is the most common problem for CSR Bluetooth devices. The main culprit normally Windows Update. Windows automatically installed a new driver but the truth it is unstable and cause your Bluetooth not working properly. You can also applied the method I described below with other Bluetooth device such as Atheros, Ralink, Broadcom and Realtek. The main reason I make this post specifically for CSR is unlike ...