I have been using MSI GE620 and I did not had any issues with the same. I have recently reinstalled Windows 7 on the same. Since then I am getting black screen on boot. I did not had any issue with the installation and I had made sure that I am installing all the required drivers as well. It all happened when I rebooted the laptop after installing Windows 7 along with the required drivers. Is there anyone who has faced the same?? Is there anything I can try out?