What video card do you have? Does the vendor have a video card driver
update available that might fix this?

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Speaking for myself only.
See http://zachd.com/pss/pss.html for some helpful WMP info.
This posting is provided "AS IS" with no warranties, and confers no rights.
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>I downloaded the new WMP 11 and when I want to go to full screen, does not
> work or the computer shuts down WMP 11. Also get upside/down display and
> goes back.