Is there anyone who can shed a little light on my problem. My Macbook Pro was having a problem shutting down, so i did a force quit. However it hasnt come back on. I get just the startup sound, Apple symbol with a time bar underneath which when it gets to 30-40 seconds just turns itself off. I have treid startingup in Verbose mode, resetting the PRAMand starting in Single user mode where i get lots of Incorrect Block count messages and that the Volume cannot be verified completely. The computer then turns itself off again. Is there anything esle i can try? Is this a hard disk issue... a new hard disk required?