I recently reinstalled windows 7 on my Toshiba Satellite laptop ( Intel Core I3, 4 gb ram). Now the hard drive light is on nearly constant with a rare flash here and there and it is sluggish. It takes about 45 secs to 1 minute to launch a web browser for example and startup and shutdown are also very slow. . I have installed all of the windows updates so it is now current. There is bare minimum of programs installed. I have defragmented the hard drive and checked it for any problems but it came back clean. I also ran memtest and the memory shows no errors. Any help with this would be appreciated.