Article ID: 5634, created on Oct 20, 2008, last review on May 11, 2014
How can I rotate my screen/monitor for an Virtual machine in full screen mode?
Under Parallels the monitor driver that Windows interacts with a 'virtual screen' in Parallels, Parallels then interacts with Mac OS X and it is Mac OS X that interacts directly with the screen and monitors, whereas in native XP the monitor/screen drivers interact directly with the screen. So, you cannot use any custom drivers and corresponding software for Screen rotation in VM
Rotate the screen in Mac OS X, then Alt+Enter to switch Parallels from Full Screen Mode to Window Mode then Alt+Enter again to get back to Full Screen.
This operation is recommend to perform on the second monitor, nevertheless you can do it on primary monitor too.