Firstly, download and install the updated version of Nokia pccsmcfd driver. After that, navigate to Microsoft Download Center and download and install the latest version of Nokia PC Suite. Next, you need to press Windows + Pause/Break key combination and to open Device Manager. Expand the Universal Serial Bus controllers list, right-click on the driver and select Uninstall. Reboot your computer, connect the phone to your PC using the USB cable, press Scan for hardware changes icon from Device Manager and and wait for Windows to retrieve the drivers.