Airport express won't connect to cable modem

We recently moved to a new residence and just had internet service installed by a technician. Unfortunately, I didn't have my Airport Express handy while he was here, so he simply connected my Macbook Pro directly to the cable modem via ethernet cable. When I found my Airport Express, I disconnected the Macbook Pro from the cable modem and connected the Airport Express to the modem via the same ethernet cable and powered up. The Airport Express began flashing yellow but the flashing yellow never did turn the steady green that indicates the Airport Express is receiving the signal. I called my internet provider but they don't deal with router issues. What can I do?

Cable modems "remember" the device that is connected. Your modem is "remembering" your computer and looking for it when you connect the AirPort Express, so it will not connect to the AirPort Express.
You need to push the reset button on the modem and then power off the modem
Power off everything else on the network...all computers and devices
Wait 15 minutes
Make sure that the ethernet cable from the modem is connected to the AirPort Express
Power up the modem only and let it run 3-4 minutes by itself
Power up the AirPort Express and let it run a few moments
Power up each computer and device one at a time
Check for proper operation.
If...you are switching from a previous DSL service to cable, you may need to reconfigure the AirPort Express. Post back for more info on this.
Message was edited by: Bob Timmons

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