Hey, I have this laptop, its a dell Inspiron 17 and it was having really bad loading times. It got to the point to where you couldnt load up windows, so I thought it would be good if I wiped the harddrive and put a new copy of windows on it. So I wiped it and
loaded installed windows on it again on my PC and it works, but as soon as I put it back into my laptop and try to boot it up it always gives me the message 'Operation System not found' or boot device unavailable or something along those words. Please help!