@Inspirits 

Hi, thanks for  posting question here.

There is a port for internet access in your dorm, right?

Usually, when you connect the router to this port via Ethernet cable, even though there is no internet, the Internet LED on the router should be orange or red.

If the internet LED is off, you may change another Ethernet cable for a try. BTW, if you connect a wired PC to the port via same cable, can you access internet normally?