Gray screen, then shut down.
I get the gray screen, and then the spinning wheel, but then it just turns off (about 10 seconds after the spinning wheel appears). I tried safe mode and resetting the DV/PRAM but each time, it just turns off. In the case of the DV/PRAM, this did reset as now I hear the startup sound (previously it had been muted) so something is working.
Any suggestions would be much appreciated!
MacBook (13-inch Early 2008), Mac OS X (10.5)