Yesterday, I ran cyberscrub to clean my disk. I have done this often with no problems. When I rebooted windows would not start. After my Dell computer boots, all I get is a blank screen with a cursor blinking in the upper left corner of my screen. I tried to run the repair from my Windows installation disk and when it reboots I just get the screen as described. I gave up and tried a fresh install without reformatting (I need to save other files not backed up). I am using an older hard drive to get online. By the way, I ran a diagnostic on the hard drive itself and it passed all tests, so I know the hard drive is ok. Also, I can explore it with the old hard drive and it works. What can I do to fix this problem? I need the original hard drive for work.