Yeah laptops just don't have the space and ability to really upgrade. You could find some RAM for it but something like graphics and such just aren't really able to be upgraded. RAM always helps though! But for what exactly is bogging down your onboard, I don't know What windows do you use? If you're using a newer one do you use all the fancy features?

EDIT Okay so yeah I learned how to look at pictures! lol

so you have windows 8, if you're using the "style" features of it that may be bogging you down a little. I don't know if it's actually called style but you know the fancy window colors and animations, that sort of stuff.