Time capsule DHCP won't connect

[openline]

Help my wireless just stopped working. I can connect my MBP to the cable modem directly and get online. My TC is working fine for my TM backups, but it won't let me get online. i went through the set up and everything looks fine. Even re-did it. I also restarted the modem and TC in hopes of resetting the IP address still no good. In network preferences diagnostics it shows I am connecting to ISP but getting no internet. Called Comcast and all they said is their signal is getting to my house so it's my problem. Also tried using my old linksys and had the same results. It was working fine until last night and it just stopped. Seriously nothing changed that I know of.