What's your graphics card, by the way?
I also had that problem with an Intel chipset which has built-in graphics. I solved the problem by
updating my graphics card driver. Here's how I solved that flashing court issue:
1. Download the latest driver of your Intel graphics card model from Intel. I supposed you already know where to find and download the driver.
2. Uninstall the old graphics driver by going to:
System Properties -> Hardware -> Device Manager -> Display Adapters, then expand the display adapters menu. Select Intel(R) 915GM/GMS... right click on it then select Uninstall.
3. Reboot your computer.
4. Go to the folder where you saved your newly downloaded Intel graphics card driver and run the executable.
5. Reboot your computer after the installation has finished.