Desktop

It sounds like you may need to upgrade your video card driver. It may have gotten corrupted or may be set to standard vga. Find out what card you have and go to the manufacturers site to download the newest version for your card.

Try updating the video drivers thru Start-Settings-Control Panel-double click on the Display Icon,when screen comes up click on update driver button.You will also need to download the updated version of Direct X drivers ,which could be causing a problem.
Run scan disk from Windows and see if it brings up any file errors.
Download the latest version of the engine first and then download the dat files.

Is your monitor a Sony. Sony's have been known to have what is called deadlines (1 to 3 of them) on the screen. They are most visible with a white backgroud. I have had an instance where a monitor would let a computer go into normal mode, but only let the resolution be 640x480 at any color depth. The issue here sounds like a bad memory region on the Video card most likely. The Sony monitor issue, if it applies to you, could be unrelated. If the corruption is always in the same place from boot to boot. then your looking at a bad video card, unfortunately. I hope I'm wrong, but its worth a test.

Check for problems:
1. Go into Windows Explorer and on the left side, click on "Downloaded Program Files". Here, you will be able to see the status of your downloaded program files, and find out if any of them are corrupted. Go to the microsoft Knowledge Base <http://support.microsoft.com/support/default.asp?SD=SO&FR=0> to check on how to fix them if any are corrupted or damaged.
2. Obviously, uninstall Real-everything and start over.
3. Go to Start|Run and enter MSCONFIG. Click on the ADVANCED box, and see if VGA 640x480x16 is checked - if so, uncheck it.
4. Do what the others above have recommended, like reinstalling your video driver, but try my suggestions first.
I do not believe that this is a virus - the above suggestion relating to an Active X problem is another possible place to look.

lower your hardware acceleration located in your system,device manager,performance lower up to the 2nd gauge,change your monitor to plug n play in your properties, then restart your machine.update your video driver later.