Crashing on Sony Vaio Z Series with external monitor

Hi,

I’m trying to play the demo on my Sony Vaio Z Series. It works ok on the laptop itself, but when I connect my Viao to the docking station (which enables the external monitor) it crashes. It says “failed to iniitalise 3D engine” and the logs are below.

Any ideas how I can get it to work with my external monitor?
Thanks.

Errors

16/11/2011 - 19::55 - D3DERR_INVALIDCALL
16/11/2011 - 19::55 - CreateDevice
16/11/2011 - 19::55 - D3DERR_INVALIDCALL
16/11/2011 - 19::55 - CreateDevice failed again
16/11/2011 - 19::55 - Failed to initialise 3D Engine:…\src\Game.cpp 321

Draw Debug

Initialising 3D Engine
Driver : aticfx32.dll
Description : AMD Radeon™ HD 6650M
DeviceName : \.\DISPLAY7
Checking For Shader Support
NumSimultaneousRTs:4
hal_caps.PixelShaderVersion >= D3DPS_VERSION(2, 0)
About to Create 3D Device with width: 1600 and height : 900
Attempting hardware Vertex Processing
Attempting software Vertex Processing