Try turning the modem off and on and also make sure the cables are secure while you're at it. If the lights are still off, the only thing you could do next is to call your internet service provider. Worst case scenario here is you might have a dead modem.
My 2wire modem keeps saying cannot find an ATM thing and no matter what I do it will not conect to...
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My 2wire modem keeps saying cannot find an ATM thing and no matter what I do it will not conect to the internet