I'll make it short and sweet: - I have a 2007 Macbook Pro. I try and start it, it goes through the boot process but makes it to a blue-ish screen and nothing more. I can move around the mouse but I cannot get to the desktop. - I tried to reformat it with a bootable USB. I boot from the USB, I get the gray screen with the Apple logo and the spinning circle. After two mins, the Apple turns into a "do not enter" sort of sign and the circle spins for eternity. - I tried to enter safe mode by holding shift on bootup. It gets to the Apple and the spinning circle and it does that forever. Where do I go from here?!?