I upgraded my computer from Windows XP*/Windows 2000* to Windows Vista*/Windows 7* and now my maximum amount of video memory is less. How do I switch it back to the higher maximum amount?
This is expected behavior. Video memory is handled differently in the Windows Vista and Windows 7 operating systems. Windows Vista and Windows 7 require more system memory than Windows XP & Windows 2000 and have new memory requirements such as support of the Aero* user interface. Also, unlike previous operating systems, Windows Vista and Windows 7 have greater control over memory management and determines the amount of the graphics memory together with the Intel graphics driver. Check with your computer manufacturer on the maximum graphics memory to expect when using Windows Vista or Windows 7 on your computer model.