The network is not working properly

Agree, I need help that I can not understand and unable to think clearly. I've reconfigured a network for a small business and I can not make everything work properly. We had lost the logbook in a surveillance room and had to reset it, which meant that everything had to be reconfigured on each device. Now that I have access to the home, I do not understand why I can not operate the wireless network, I can receive the SSID of the device, but no Internet connection once connected. If I connect the Internet to my laptop as I did before, it works, but not so wirelessly. Please, help me by his stress, I can answer all your questions to solve this problem.