x_Tech: I (unfortunately) have to use an application that has to be restarted whenever there is any momentary loss of internet connectivity. Tech support insisted I had to have an internet connection that never did this.
In my experience, most tech support staff will tell you to reinstall Windows for any problem you may be having, including smoke rising from the back of your computer. In the event you use OSX or Linux, they will inform you that your OS does not support an Ethernet network. If you seem to be receiving a different response, it is probable that the support technician is located in Asia and there is a serious language barrier.
No lights? sounds like you may have power problem. You'll need to build either a coal fired or nuclear power plant to ensure uninterrupted power to your modem.