I ve got a plc adapter of d-link(DHP-P306 ).Ι had a successful internet connection in three different rooms.Suddenly.i lost connection and since then I am randomly connected,except for the pc that is in the same room with the router.I ve set up the adapters through a process that i found in various websites(pushed the safety button to synchronize adapters).But still i ve got problem( Huston)!! Is there any hint?