I have done a lot of checking for valid resolutions, and I haven´t seen any problems with getting an invalid resolution. If the drivers are correct.
The checking functions should return the exakt same modes that you can see in windows display settings. Plus additional resolutions below 800x600.
So check that you have correct drivers for your videocard AND your monitor.
If your monitor .inf file in incorrect you could garbage screens.
The checking functions should return the exakt same modes that you can see in windows display settings. Plus additional resolutions below 800x600.
So check that you have correct drivers for your videocard AND your monitor.
If your monitor .inf file in incorrect you could garbage screens.