Unable to run the Software Development Kit (SDK) at 90 or 270 degrees at full screen - ThinkCentre M91, M91p
When you connect two displays, and rotate the display to 90 or 270 degrees, then select "SDK sample" test item in the for the DirectX test, you will find the test may not be at full screen. However, the test will run and pass.
The above symptom is associated with, but not limited to, the following systems which is configure with Microsoft Windows XP Professional and Microsoft Windows XP Home Edition
ThinkCentre M81, M91, M91p
The systems platform is the Intel Q67 chipset with dual displays.