It never hurts to double check the cords and cables going to your modem.
- Is the modem plugged in, turned on and getting power?
- Are all the connections tight and secure?
- Are all the cords and cables connected to the correct port or outlet?
If you think the problem could be with how your cords are setup, but you're not sure what's supposed to be connected where, don't worry. Read How your modem cords and cables should be connected for an explanation of what to do. (If you're you trying to fix a problem with your wireless, read Troubleshooting common wireless connection problems.)