Hi, I really need help. Just working on my Master Thesis and my MacBook Pro early 2008 does not boot. I put it to sleep and when I opened it up, black screen. It's not completely dead. When I power it on the disc drive makes the usual noise and the fans are going but the screen remains black and the apple logo with the chime doesn't show up. I already searched the web and reset the PRAM and the SMC. Switched RAM modules back and fourth. Left one module out and then the other... Can anyone help? I already ordered the retina but that will still take a while. Don't know what to do. I really need keep on working. Thanks everyone.