C:\folder\path\nircmd.exe setdisplay 800 600 24
Tried, does not seem to workDownload nircmd.exe and create a desktop shortcut:
Code:C:\folder\path\nircmd.exe setdisplay 800 600 24
Where 24 is the color depth.

On my main machine it works, on the vm using vmware it does not xP not even when using a cmd directly.I don't know, it works for me. Does the same command line work from CMD or PS?