It seems that probably the video driver is not properly installed or initialized by the operating system.
I suggest you to check on your computer's Device Manager and see under display adapters. Make sure that the display controller is not marked with any exclamation or question mark on it.
You can also try loading the latest generic driver that we provide for the video controller integrated in this processor. That driver is available here:
If during the installation of the Intel generic drivers you get this message: “driver not validated on this computer”, go here for further instructions:
I also recommend you to check with your Original Equipment Manufacturer or laptop manufacturer to make sure that all the hardware installed is working fine and also check that all the drivers required for your system to work, are loaded properly. In addition, you should use the operating system image or installation disc that is provided by your Original Equipment Manufacturer for this system (specially if the issue started after you reinstalled the operating system on your own)