I have a ibook g4 Version 10.4.11. I'm trying to open up the System Preferences and i'm clicking on the apple menu in the top left conner and nothing happens. I've been sitting here for about 2 hours now and it's as if system preferences doesn't exist on my computer. I've looked in the Utilities,Applications,finder,spotlight and it's not on my dock. Need help??? Oh and just about all my apps besides safari,finder and dashbord have question marks on them.