Apache doesn't start

[LisaCross]

Can someone tell me why Apache doesn't run? This is the message I can read:
Attempting to start Apache app...
14:43:08 [Apache] Status change detected: running
14:43:10 [Apache] Status change detected: stopped
14:43:10 [Apache] Error: Apache shutdown unexpectedly.
14:43:10 [Apache] This may be due to a blocked port, missing dependencies,
14:43:10 [Apache] improper privileges, a crash, or a shutdown by another method.
14:43:10 [Apache] Press the Logs button to view error logs and check
14:43:10 [Apache] the Windows Event Viewer for more clues
14:43:10 [Apache] If you need more help, copy and post this
14:43:10 [Apache] entire log window on the forums

Thank you so much

[LisaCross]

I think I've fixed it, the problem was the port: I had to change it.
If someone has the same problem I suggest it to search online how to change it. I hope it will be useful for someone else.