Hello everyone, I have a lenovo B560 laptop( I don't know the history of the laptop it arrived at my hands without OS) and after having formatted it with win 7 Pro SP1 it ran very slowly.. I am thinking that was caused by a failing drive (WD 500G I think) so as we speak I have installed Win7 on a USB drive and it runs smoothly. Should I conclude slugish performance was the failing internal drive or give it a shot to clone the external USB drive to the internal and see how it goes?