I just returned my Samsung notebook and got a Satellite C675. I was trying to increase and decrease the volume by pressing the FN key and the number 3 and 4 to adjust the volume but it doesn't do anything. Also this laptop emanates an unpleasant toxic-like odor. I was using a Samsung laptop $380 before returning it to try this one. Also aren't the keys kind of hard to press on this laptop? I heard that if you buy the different computer parts yourselves and then call a computer technician they can do it for about $10 in Korea. Is that the case in the US as well?