I have a client who has an HP 6930P EliteBook, with dock; connected to the VGA port is an HP LP2465 monitor. He has Windows setup for an extended desktop; he's using WinXP SP3; the normal way he uses it is the laptop lid is open, and the laptop is his primary monitor, with the external LP2465 his second monitor for the extended desktop.
Until recently he had the two monitors setup with different resolutions; I think the 2465 was setup at 1280x768 or 800. Last week on booting the notebook, the external monitor reset to 1024x768, and when he attempted to reset it, he found 1024 was the max resolution Windows would allow on the Display properties screen.
Attempts to reset it have failed - we've upgraded the monitor driver, and removed all defined monitors to let Windows redetect and reconfigure them. Any advice is appreciated -