Unable to use 1600x900 or 1280x960 wide screen resolutions on a CRT monitor that supports those modes
The manufacturer of the laptop may have disabled the video modes in the BIOS. The chipset supports those modes, but the manufacturer has chosen not to support them.
Multiple Display FAQ
This is expected behavior for laptops that have video modes disabled in the BIOS. Check with the laptop manufacturer for further information regarding their supported video modes.
Note: The system BIOS is vendor-specific. You must contact your laptop vendor and/or manufacturer to obtain a system BIOS update specifically for your system.
This applies to: