Sounds like a video card problem on the first machine

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Michael Koerner
MS MVP - PowerPoint
>I tried to project in a classroom using my laptop (HP Pavilion zv6000) and
> got alternatng about every 10 seconds on the projection screen an image
> and a
> blue screen saying "Perfecting the image." So I tried another computer
> (with
> the same cable) and had no problem. What is going on?