Hi. This is my first time posting because I usually get my answers from any previous topics but the problem I have right now there are nothing out there for me. Long story short, when I boot my computer, it goes to a "DOS" screen and tells me that there is no bootable drive. So I try again pressing down the alt button and I get my mbp hard drive option. I click on it and after about 15 minutes screen comes up (my last view before turning off last night) and mouse is the only thing working. (everything else frozen). I used to run bootcamp with windows 7 before but I've cleaned out the hard drive and was only running snow leopard. Can anyone help? people at the apple store told me its a hard drive problem. I got a new hard drive and I'm still getting the dos prompt. Also, tried installing Leopard again and it freezes on me. I have no clue... 15 inch MBP (late 2008 model) 2.8ghz 4gb memory thanks.