I've been using the powerline adapters for several years with no problems or issues.  Suddenly, two days ago I am no longer able to get an internet connection.  The ethernet light is lit on the device connected to my router.  The device that is plugged into the wall near my computer does not have the ethernet light light up.  The other lights are lit.  I have switched devices and the same thing happens, so I don't believe that it is an issue with the units themselves.  Both units are plugged directly into the wall and I have paired them a couple of different times since this has happened.  I have even tried different outlets in my apartment.  It's always the same result.  The unit that is plugged directly to the router has the ethernet light lit up, but the one plugged into another outlet does not have the ethernet light lit up.  I have reset the router and it didn't help.  I am able to use the wifi, so I don't think it is an issue with the router.  

I even purchased a new pair (different brand) and I cannot get them to work either.  I have no idea why they stopped working.  I haven't changed any of my equipment.  Same router, same laptop, same ISP, etc.  

If someone can give some advice on what to do to get it working again, I would be grateful.