Windows 7 was working for the past two months. I Added the windows 7 hardrive into another PC to copy some files. This is a new motherboard and memory.. Intel dual core 3.0 and memeroy 4gb. I put the drive back into the computer, now it only loads in Safe Mode. Why want it load into the desktop. It's starting windows and its not. but pc is running and no screen appears. What can I do?