martyh

mikeyb is correct ,the yellow supplied cable must be connected to the wan port only (usually coloured yellow)from the modem. Your pc then connects to any one of the 4 lan ports
when i connected mine up i made the mistake of leaving the modem on it is important to power off the modem first then connect the router then power on modem then power on router and laptop leave pc off at first.Once the laptop has set up the network then you should be able to connect the pc
if you are trying to set up the laptop wirelessly then don't most routers have issues with this you need to connect a ethernet cable (the white one in the photo will do)from the port in the laptop to any one of the 4 ports in the router to do the initial setup once that is done then you can connect wirelessly