Not able to connect with PHP my admin (no replies)

I have installed wampserver3.1.3_x86 on Windows 7 service pack 1 and getting error message

- #2002 - No connection could be made because the target machine actively refused it. — The server is not responding (or the local server's socket is not correctly configured).

- mysqli_real_connect(): (HY000/2002): No connection could be made because the target machine actively refused it.

Please, help me ASAP.

Thanks