i dont have to reset it ,net even change the setting but access internet without port 80
The internet (HTTP) runs on port 80 for example Google can only be accessed via port 80
The only way to access the internet without that port would be setting up a dedicated HTTP Tunnle server outside your network but that is extremely complicated and would require a dedicated server as well as at least a few years experience with UNIX/Linux.
The best solution would rather be to reset the router or if that is not an option contact your ISP/Router manufacturer