Can't change display settings - HELLLP

[Coolie]

My sister (in another state) can't change her display settings. She gets the message "The display control panel is unable to change the display settings. Please check your display hardware in device manager." So far I've had her remove and let windows reinstall the video card (via device mgr.), and install the latest video drivers.
It is stuck on 1024 X 768, and gets a Direct Draw error message when she attempts to run certain games, because the game is unable to change the resolution.

System: Gateway 900 MHz (don't know model)
Video card: Nvidia Vanta
WindowsME

 

[limsandy]

It could be limited by the video card or the monitor.

 

[homaryu]

Have her check the monitor in device manager. Change it to plug n play monitor if it doesn't recognize her monitor. She could also get an inf file for the monitor. Have her install DirectX 8.1