Can't set up TC in new apartment with new Internet connection

Question

I'm trying to set up a Time Capsule in my new apartment. I can't. Here's an outline:
--I just moved (from the Southwest back to the Northeast). I set up my TC for the first time in the Southwest and used it as a wireless router with the DSL service I had there. I never had problems.
--I just had Internet service set up in my new apartment here (cable). I connected the modem to my TC. At first, the TC flashed amber; my MacBook detected the device but gave an error message that said that it was not connected to the Internet. I followed an online tip and disconnected the modem from its power source for a short time before reconnecting it and connecting it to the TC again. The TC's status light went solid green--and then went back to flashing amber. It now seems to alternate every few minutes.
--I'm able to use the TC as a non-wireless router without problems (that is, I have an ethernet cable running from the cable modem to the TC's main input and another running from one of its outputs to my laptop). What's more, my Airport utility seems to think it's connected to the wireless network I set up on the TC (it shows a checkmark next to the network's name). But the only way I'm connected is with the ethernet cable.
Any suggestions? Thanks.

Answer 1

I suggest trying the following:
o Power-down the modem, TC & computer(s). Order is not critical.
o While powered-down, perform a "factory default" reset on the TC. When done, power-down the TC.
o Power-up the modem; wait at least 10-15 minutes.
o Power-up the TC; wait at least 5-10 minutes.
o Power-up the computer(s).
The computer(s) should now be able to access the Internet either by wire or wireless from the TC. Please post back your results.