Are you running the server on the same port you have portforwarded?
Make sure that you've changed the port on the server.properties file
Also on a related note I'd suggest you leave the port on default, as the Minecraft client normally tries to connect there, if the server runs on a different one you would then have to specify the port after the IP.
Sorry for the late post but yes they are different computers.And my asked my brother and it does not affect him. Im guessing it's my firewall. I am not using windows firewall im using kasperskys firewall. I will test and see what i come up with.