PowerDVD Black Screen :S

Hi guys^^...

I have a problem with PowerDVD.

When I reproduce a DVD, only I see a black screen on the video.

When I move the window, I can see something of the video.

What can be?

I have the answer

When I close objectbar, powerdvd returns to show images.

That is to say, cannot I use

objectbar+powerdvd?

(Sorry for my english)