I need a new 15" Laptop, but not necessarily a gaming Laptop. It should run some indie games, but that's about it, when it comes to gaming. I need it mainly for the college, since I'm studying computer science. I want to spend up to 600, but it would be great, if it could stay under that, if it's possible. A very important thing is, that it needs to be as quite as possible, because I'll carry it to classes etc. I also want a Windows OS, preferably Windows 7. Help is appreciated.