WampServer

I am not sure when it started but my Apache Web Server fails to start (the WAMP icon statys orange). I managed to look at the Windows Event log (I am running Windows 7 Service Pack 1) and I see three errors that make sense but I am not sure what to do about it. I am not sure how to tell what is the conflict all of a sudden. Like I said it worked up until recently.

(OS 10048)Only one usage of each socket address (protocol/network address/port) is normally permitted. : AH00072: make_sock: could not bind to address 0.0.0.0:80

AH00451: no listening sockets available, shutting down

AH00015: Unable to open logs

Thank you.