wamp is not starting completely

I have latest version of wamp i.e WAMPSERVER (64 BITS & PHP 5.5) 2.5 installed. Its not starting completely, not turning to green and so mysql is not starting even though the port is used by apache itself.

I have also installed Visual Studio 2012 VC 11 vcredist_x64/86.exe for my Windows 8.1 64bit OS.

Very weird, all the paths are configured in paths and also extensions enabled. Please help!!