Reply to Laptop and S2

I really want to go to my local store tomorrow and buy the kontrol s2 controller as I am only a beginner. The only thing stopping me is all the problems people have with windows 7. I have a sony vaio e series, i3, 4gb ram etc about 2 and a half years old. I've just done a fresh install of windows 7 and deleted all the sony bloatware etc. What's the likelyhood I'll have sound issues?

I've noted from reading some posts on here I should turn my wifi off and disable the wifi driver.

I really want to go and buy it tomorrow but this is bugging me