Extended Desktop display mode is not available or selectable in the graphics driver or Windows* Display control panel
The Intel® G41, G43, G45, Q43, and Q45 Express Chipsets support Extended Desktop display mode. Update to the latest System BIOS for your computer or motherboard. Some older BIOS may have the secondary display device disabled.
Check with your computer or motherboard manufacturer whether a new system BIOS version is available for your computer or motherboard and for instructions on how to install the BIOS update.
Where can I get the latest BIOS for my system?
Computer Manufacturer Web sites
This applies to: