Help regarding my printer

I'm having a strange problem with my printer.It is Samsung ML-1210 and uses a USB port to connect.Now when i connect the printer to my PC thorugh the USB port ,it just doesn't start.If i remove the USB cable from either the PC or the printer,then it starts.And if i connect it after it is on my windows don't detect the printer.ITs supposed to be a PnP printer and was working quite well but suddenly it has acting strangly..Even if i install the printer manually using itsdriver CD,it doesn't complete any print command.It does print the test page but not froma command given through PC but if i press the "test page print" button on printer.

I thought the problem is with USB port but all other USB devices,like Data travelers,cameras etc, work prefectly fine.Can someone tell me what is the problem?