Also, if it's suffering a kernel panic at startup try the following : 

Boot holding down alt + cmd + P + R until you hear the startup chime twice
Switch the machine off, remove the battery & power, hold the power button down 
for 10 secs, reassemble and switch on

If that doesn't work : 

pop your original OS X installer DVD (or Snow Leopard upgrade disc would be 
better) into the MacBook on startup and hold C on the keyboard.

Once it's started from the DVD you should be able to go to the Utilities menu > 
Disk Utility > run disk repair on your hard drive. If that doesn't sort it then 
you'll have to do an archive and reinstallation:

10.5 > Click on Options when asked to select a drive to install OS X on, choose 
Archive & Reinstall > tick "Preserve User & Network Settings"
10.6 > Just select the internal hard drive as usual, default installation is 
Archive & Reinstall

10.4 > buy the Snow Leopard upgrade disc and see above….

Regards

Sam
MacAmbulance
Providing affordable Apple & PC services

Sam Mullen
07747 778022
http://www.macambulance.co.uk
[email protected]


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