Hi All, Go easy on me! I'm not a Mac person, and everything you read here I've learned in the last couple of hours so my terminlogy may not be 100% correct. I am familiar with various Linux and Windows OSs and PC hardware however so it's not unfamiliar territory. I've got a strange boot problem with an MBP A1226 which a friend has asked me to look at. Unfortunately, they don't know the version of OSX it was on, though a bit of internet research tells me it was probably 10.6. They don't have the recovery discs... What happens is this : It turns on, I hear the chime, I see the Apple logo and then turning cog thingy, and then after about 10 seconds, there's a really brief flash of orange, and then the screen goes black, and stays black. Only holding the power button turns it off. The hard drive isn't really clicky like a dead hard drive, but I can hear it continue to operate even after the screen has gone black for a minute or two. Then everything seems to fall silent I have tried - Connecting a second display in case this is an issue with the GFX chip. Nothing ever appears on the second display. - booting up in safe mode. The same sequence happens, but it takes longer before the black screen comes up. - I've tried PRAM reset. The reset appeared to work, but the behaviour did not change. - Access startup manager. When I do this, I do see one disk, the disk from the MBP, but when I launch it I get the same behaviour. The last thing I found was instructions on how to set verbose logging on bootup. This is the very last screen before the screen goes black... Any ideas anyone?