If you are changing from their PC to your PC you have to remember it remembers the old PC's "MAC ADDRESS." To restart you have to disconnect the old PC and then connect yours. Now power down the cable modem for at least 20 seconds then power it back up. When all the usual lights are on start your machine.
I'll skip PC settings since you didn't tell about them.
Bob
Hi, I've tried to fix a friend's computer that uses a cable modem. It states that the ethernet adapter is "limited or no connectivity, firewalled." I disabled the firewall, but still cannot connect to the internet. The cable company has already checked the modem and wires and they are all working properly.
It is Windows XP, Motorola SB5101 Cable Modem.
Are there any suggestions on how to fix the problem?
Thank you.

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