I have a Thompson 784 router that connects to the Internet. It works nicely enough. What is wrong is that I have a shielded Cat 5e cable that goes from my room to the router that's in a another room (~30 metres). Both ends are the same; both ends are done nicely; I've tested it with a cable tester and every wire connects. However, when i connect my computer to my router neither one will find the other.
So would anyone be nice and please explain what is wrong.
p.s.: I have tried many different cable ends (currently it on standard/A), the cable is tested both ways (as it should be) and yes I'm at my wit's end =(