Why is my macbook making these noises and not turning on?

I've been using my brother's macbook while he's gone (I'm not sure which version it is. It has the plastic white case with the actual clicker bar next to the track pad), and last night it started making these weird noises. It sounded like when you put a CD in the drive and you turn the macbook sideways. Where it's a kind of gurgley noise coming from the disk drive area. It was getting really hot and today I was watching a video on Netflix and the computer just shut off. The screen went black and now when I try to restart the computer, it turns on and goes to the start up screen with the Apple sign and the little loading spinning wheel. It does that forever and never fully turns on. It also gets really hot. Help! How can I fix this and what is wrong? Is there an easy way to fix it? Is it going to cost a lot of money? Am I going to have a professional do it? Please help!