One computer in my office won't connect to the internet server, why?

-There are about te computers connected to the internet in my office, and one just won't connect. Everything is plugged in and connected, it just won't connect. What could be wrong? Obviously mine is working, but the one five feet from me won't. We need it to do office work, Help!Sorry but your questions wayyyy too vague...



Like are the builds of pc's are the same?



like we dont know what is running on the "not working" one.



You need to get an IT guy.......



there are soo many questions that needs to be answered before troubleshooting your matter