I woke my Macbook from sleep and immediatly I get a Kernal Panic. I Quickly Restart and the computer does not startup. It stops at the grey/white screen that first appears, (no apple logo), then three clicks are heard; waiting a min or so the clicks repeat again. The computer is unresponsive. I have not installed any software resently and am running Mac OS 10.5.2. What should I do? It has run perfect up un till this point.