Due to errors WAMP tray icon does not start, and if you are in a hurry or you want to take a backup of your websites until you fix the error, sometimes the procedure below helps you to start the WAMP without the tray icon:
- start (CMD)-> run -> services.msc
- find “wampapache” -> Right click -> Start
- find “wampmysqld” -> Right click -> Start
Then, if you are lucky you will be able to see localhost and run your websites until you resolve the WAMP issues.