After letting the router assigning the ip address instead of static ip, now it won't even connect to the router. I have a wired connection now, so there's no way it's another router. It has to be the laptop, because it won't connect to the neighbor's unencrypted network either. It did before, but wouldn't receive packets.

Thank you all for troubleshooting thus far. I hate leaving stuff like this unsolved, but I gotta run out too.