Without knowing what version you are running, you could try to stop and start the Apache from the Console screen byt entering in CTRL + ALT + T then select "Addons" then select "Apache" and stop it then start it again. Also from the Console tools try to do the Time settings and just keep hitting Enter to take the defaults to see if that will kick start it. It could be that the boot media is failing or has issues and cant get the Apache to load.