I just bought a new Lenovo Ideapad U310 and for the most part, I like it. I just bought it today, and there is noticeable fan noise, which doesn't really bother me much. What is bothering me, however, is the weird, constant clicking/ticking noise that is coming from what I think is the hard drive. I'm not sure if I should be worried about it or not. Is this normal with Lenovos? I'm using this laptop for grad school, which starts in a week...should I return it and get the HP Pavilion Sleekbook that I was looking at before this Lenovo dies on me?