1. Which operating system is running on your laptop?
2. Did you follow the step by step setup instructions for your router to the letter?
3. Did you use your laptop to set up the router, and if you did, were you able to connect to the internet whilst the computer was still attached to the router via the Ethernet cable that came with the router?
4. Do you have any other computers, and if so, can they connect satisfactorily?