First of all rule out the basics:? Our terminal connected to any other network Does your router to another device ?. If the answer to both is yes, then what we can do is:
- Erases the WiFi network your device and try to connect again
- Restart your router
- Clears the network and when you go to reconnect enter advanced options. manually enter the IP and the gateway to your network.
It is possible (but unlikely) that desconozcas these data. To know they need a computer. Inside the computer will enter the command prompt. You only need to enter the "Run" program and write in the bar "cmd". Once we are on the screen in black, we type "ipconfig" and we will show a lot of data.
Here we have to locate the section that makes reference IP or IPv4 wing. These are the data that interest us and we'll put on our device in the field of IP, but we have to change the last number (ie, if this is 20 then change it to 21, for example).