What is going on with my computer?

[TacitCracker]

When I unplug my pc from my router and then directly into my modem I get a message that says limited or no conectivity. How can I get my pc to connect!!!

 

[Rip_Uk]

are you using ethernet or usb?

 

[DarkJokerX]

This happened to me what i tryed to run a ethernet cable and a usb cable from my modem into 2 computers.