I have a 6 year old MacBook Pro "13 and I have been having trouble logging on for a good week now. I know the laptop is on its last leg but I need to access some important files before I move on to a new MacBook Pro. Whenever I start the computer normally it will go to the apple logo and the wheel will continue to spin endlessly until I turn it off. When I try to boot it into safe mode, the loading bar will go halfway until it disappears and goes back to the endless spinning wheel. I have been searching for my installation disk and I'm not sure if I can find it. Even if I did find it would I even be able to access it? Does anyone have any idea what I should try to get this puppy to log on? I'm not sure if it has anything to do with it but my battery fried 6 months ago and I had to replace it. That replacement battery also has pretty much fried and I can only run the laptop for around 20 minutes at full power while unplugged. I would appreciate any help!