Maybe it because default port (port 80) probably used by IIS.
Go to
wamp/bin/apache then find httpd.conf open up with text pad or notepad then using ctrl+F find 80 then change 80 to 8080 and do the same thing change 80 to 8080
after it finish try to using the localhost:8080 ad the address
so I found the fix (had the same issue), it comes from accidently installing the 32 bit version of the Visual C ++ runtime, uninstall all copies of the visual c++ runtime, and uninstall wamp, then install the 64bit runtime, then install wamp, it works for me now