hi i have at mo 400 watt psu and a 4 gig amd quad core processor and a nvidia gtx 520 graphics card with at the mo 2 gig of ram but am waiting on my new 8 gig ram to come though the post and i also have a dual layer dvd writer and a 1tb hard drive it works fine with the 400 watt psu bt as soon as i download utorrent and start to download the files fail and then my computer runs really sluggish and then sometimes will fail to boot up but this only happens mainly after i have installed utorrent any ideas what could be the matter and how i can solve it thank you very much