One of our staff members is running Windows 7 on a laptop (with docking station) and uses a USB VGA dual monitor device. Upon start up, the second monitor does not register any images (it remains black). Power is clearly running to the monitor and it is turned on. Strange part is, if she restarts the laptop three times, the monitor will miraculously begin working. Consistently she has to reboot three times to get the second monitor working. We are new to Windows 7 and are hoping for some direction to correct the issue...any ideas? Your input is appreciated!