If for some reason your wamp icon is red or orange, than it might be something wrong with your apache server. To find any possible errors do the following:
- Start > search > cmd.exe (Run as administrator)
- Inside the Command Prompt (cmd.exe) type:
cd c:/wamp/bin/apache/apacheX.X.X/bin httpd.exe -e debug
Note that the ApacheX.X.X is the version of the Apache wamp is running.
This should output what the apache server is doing. The error that causes Apache from loading should be in there