If your monitor is plugged directly into the motherboard, the graphics are handled by the chipset (e.g., Intel G31, G33, or G41). You should search for drivers based on your motherboard model .

Right-click your "Standard VGA Adapter" and select Update Driver .

Once you have the file:

If you cannot go above 800x600 after installation, ensure you have restarted the computer to finalize the registry changes.