I also have the similar problem with my nokia 3110c handset. When I connect it through usb cable to my computer and select Nokia Mode from my phone's option it happens nothing. The pc suite cannot detect my cellphone. I tried several times by removing PC suite, PC Connectivty Cable Drivers and PC Connectivity Solution from Windows Control Panel and reinstalling PC suite. But when I connect my nokia 3110c phone again it shows "A problem occured during hardware installation. Your hardware might not work properly". I need the solution urgently. Please help me if anyone is here knowing about the problem and how to solve it.