Hi. I'm using Macbook Pro Unibody (late 2008). 2.4GHz, 2GB Ram...Mac os X So I'm in the library right now, and tried to start my computer, and it is just stuck on the blue screen. It worked fine like an hour ago, I don't know what happened. So I hear the chime, and the white screen w/ apple logo. And then, blue screen....blue blue blue and I see that little circle thing going around and around on and off, but nothing. I do hear the fan and hardware...... I tried to do PRAM reset, but it doesnt work? can somebody please tell me what to do. I tried to look for other posts w/ similar symptoms, but couldn't find anything.