Cisco - Connections Had Limited Access

The past two days have been frustrating with my wifi. When I first got on it, I checked the internet access because I couldn't get onto the internet. The connections had "limited access". I restarted my router and modem, and it did nothing. I unplugged everything and plugged it back it and the wifi would show, but I couldn't get on it. I restarted the router and modem, and it worked. I got on Cisco Connect and the signal wouldn't show. I got off the computer and later, I couldn't get on the internet again. Later on, I could get on the internet again. I got on Cisco Connect, and it still says that there is no connection. I haven't a clue what's going on. My modem is CenturyLink, and obviously, my router is Cisco.