I am having the same problems as identified in another article
Windows XP display resolution popping back to 640x480 every time I change it at https://secure.experts-exchange.com/index.jsp?srid=/e%2B8LT0zV9Ma9BTBJYPwbw%3D%3D&redirectURL=/OS/Microsoft_Operating_Systems/Windows/XP/Q_24188329.html&rsid=20
I am using Windows XP version 3.
I have a NVidia display adapter 9600 GEforce installed on a PCI express slot.
I also have on board video using Intel
I can run one or the other
Both are stuck at 640 by 480.
I have re installed drivers.
My computer service center tells me I need to wipe and reload windows xp.
I understand from the above article that if I do that it still might not work.
I need some guidance as to where to go from here. I would rather not re install xp.
I would like to find the corrupt file or registry entry that is causing the problem and repair it.