Connect the modem to a wall outlet with a coax cable and plug the modem into an electrical outlet. Connect devices to the modem wirelessly, or with an ethernet cable to a LAN outlet on the modem. When ...

Uhhh. Define crackling noise. It's not a modem noise is it? Because I've known modems to output their sound through the speakers, in which case you'd have to turn the sound down or off through the ...