Wampserver 2.1 gives orange icon after install on Windows 7

It is probably your Skype giving you a hard time. Try configuring your Skype this way:

Tools -> Options -> Advanced -> Connection -> Unchecking the 'Use port 80...'

I had the same problem and it worked for me.

I have had the same issues on Windows 7, orange WAMP icon and when the mouse is on the WAMP icon, it shows the server is online, but I cannot connect to the server.Found out nothing running on port 80, I do not have skype and my hosts file is correct.

What worked for me is described below.

When I left click on the WAMP icon Apache -> Service, I saw that the start/stop service was grayed out.

So, I clicked on "Install service" Apache -> Service -> Install Service.

This did the trick

check the Apache port being used by your wamp at "http.conf" . Try changing the port to a number above 1024 and than restart apache. Than try to access the Apache server using a url like http://localhost:$PORT_NUMBER_HERE . If it works is because your user does not have permission to open a socket below 1024. This is common in unix environments but I am not a windows user to know if it has the same restrictions. Have a try.

You might also check the windows firewall and give access to the port being used, if the firewall is blocking it.

regards.