Sounds like you had a power glitch.
Remove the power from the modem and let it sit for a few minutes.
Connect the power to the modem and give it time to go to a ready condition.
I have a bit of a weird problem.
First of all, I have 2 modems in my house; I'll call MY modem "modem 1" and the other modem "modem 2"
My computer was fine this morning, when I was done with it I put it on sleep. Then when I came back to it maybe 20 minutes ago, it started up as if I had turned it off completely which is odd.
Now, it won't connect to modem 1 or modem 2. My phone however, can connect to modem 2 and not modem 1. So, I'm not sure where the problem is coming from.
I also didn't know where to go to get help so I just typed in "computer help forums" excuse if this isn't the proper place.