try this steps
>Control Panel>System and Security>Windows Firewall>Advance Settings>"Make sure the Apache HTTP Server is enabled" then
>Open start WampServer> Left Click on the wamp icon>Select Apache>Service>Remove Service> then Install Service> Restart Apache.
if Wamp turning in yellow icon
>Open start WampServer> Left Click on Wamp Icon> Select MySQL>Service>Remove Service>then Install Service>
Then Restart All service..
try this steps
>Control Panel>System and Security>Windows Firewall>Advance Settings>"Make sure the Apache HTTP Server is enabled" then
>Open start WampServer> Left Click on the wamp icon>Select Apache>Service>Remove Service> then Install Service> Restart Apache.
if Wamp turning in yellow icon
>Open start WampServer> Left Click on Wamp Icon> Select MySQL>Service>Remove Service>then Install Service>
Then Restart All service..
hope it works for you..