Hi Mukesh:
Did you try the IP Address of the server in the URL? Did you check if MaxDB is running?
Any errors that you see in Windows event Log or Logs of IIS ?
Key I think here is that all the IIS Roles need to be properly selected to make it work.
Also your IIS Installation needs to be done with an Administrator Account before the installation of SAP Content Server starts.
Link that Subhash shared is very good and pretty much covers all the steps that are valid for Win 2012 environment as well.
Thanks,
Mandeep