Firstly, in order to fix the problem, I recommend you update the program to the latest version. You can download it from the official web page if you access the Documents and files section. After that, press Windows + Pause/Break key combination and open Device Manager. Expand the Universal Serial Bus controllers list, right-click on the driver and press Uninstall. Reboot the PC, connect the device you want to use with Nokia PC Suite, press Scan for hardware changes icon from Device Manager and wait for Windows to retrieve the drivers.