[SmG Battlefire]

No, I'm talking about your computers adapter not your phone. The internal Wireless adapter is a driver in your computer that receives WiFi signals. Every laptop or some gaming PC's come with it. Those that don't come with it has a external one that comes with the package.

From what you are telling me there is no issue with your router. You computer has a driver issue. Open up your computer and see if your internal wireless adapter is properly connected. If it is connected then I think your driver is not functional anymore. Which means you'll need to replace it or just buy an external wireless adapter.