Your are using a interlaced video resolution for your monitor (i.e. 480i or 1080i).
You rotate the display to 90 or 270 degrees, known as Portrait Modes, through your display software or Windows Display Properties.
This may result in a black screen after rotating the display with only a flickering cursor visible.
Rotation in Windows Vista with interlaced portrait modes and Aero enabled may not work at the rotated angles mentioned above.
Microsoft has resolved this issue in Windows 7.
Artikelnummer: 2462488 – Letzte Überarbeitung: 11/18/2010 20:32:00 – Revision: 3.0
Windows Vista Enterprise 64-bit Edition, Windows Vista Home Premium 64-bit Edition, Windows Vista Ultimate 64-bit Edition, Windows Vista Business, Windows Vista Business 64-bit Edition, Windows Vista Home Premium, Windows Vista Ultimate