Hi I have a friends laptop, which he brought to me saying his laptop would not load into windows, Its windows vista it gets to the loading bar then black screen for more than a hour, thats as long as i have have left it. We he said his son dropped it. Now i personally thing it could be a HDD problem, I have tried windows advanced boot options, safe mode does the same, repair does same, and im just about to buy a replacement HDD. I even tried to install a new version of windows and after the loading screen there it also crashes. Can i take the laptop SATA HDD and put that in my desktop to run tests?( i know sata will fit but im unsure about power?) Because he dropped the laptop i just want feedback of other people because i dont want to tell him to buy a new HDD and still have a problem.