My current laptop is getting very slow, especially when being switched on. It's a Dell, 3 yrs old and I couldn't tell you all the specifications. I believe the hard drive is approx 70Gb and it says their is 40 Gb still free. I think most of the stuff on it is pictures and things like that, but i can only see about 10Gb worth of these. I've removed all the games as far as i'm aware. Any idea's on how to speed things up?