I have a Dell Precision M6500 with a FirePro M7820 in it. Here is my issue...My laptop screen is/was working. I plugged in a Samsung monitor and wanted to extend the view in Display (Win 7 64 Bit). The window only displayed the plugged in monitor, not my laptop. With the monitor plugged in, the laptop screen is blank. When i unplug the monitor the laptop screen stays blank. When I then reboot the laptop, the laptop screen works until the login screen and then goes blank. Not sure how to fix this. Could this be some sort of Driver issue?