Why a new system will not connect to an existing cable modem and resolution

New system will not connect to pre-existing cable modem at user’s location.  User replaced the system, and new system will not connect to known good cable modem.

Steps to resolve:

1.       Power system off

2.      Disconnect cables from Cable Modem (Both Cat 5 and Co-Axial)

3.      Disconnect power from Cable Modem

4.      Wait 3 minutes

5.      Connect power to the Cable Modem, wait a minute for the Cable Modem to reset

6.      Connect cables to cable modem

7.      Power on system

8.      Test internet connection

This process scrubs the MAC address data from the cable modem and allows the Mew MAC address of the system to be detected.