I'm on a mid 2008 black MacBook, running Snow Leopard and I can't log in. I know my password is correct. When I put my password in, The screen changes to my background for a bit, but the dock never shows up, and eventually it cuts to a blue screen, then back to the starting page. I've tried booting it up in safe mode, and resetting my PRAM, but neither worked. I was thinking about doing an Archive and Install, but I'm not sure how to go about that when I can't log in. Any help would be greatly appreciated. Thanks in advanced!