Powerpoint Presenter Mode mpeg problem

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I would like to use presenter mode so that I can view my notes. I usually
have no problem doing this.

But I have an mpeg video clip of about 2 minutes (5mb) insertet in a new ppt
and it hangs and will not allow me to continue. This only occurs in presenter
mode.

The notebook pc that I am using is a Dell Inspiron 2200 Celeron M 370
(1.50GHZ/1MB Cache/400 MHz FSB)
(DDR 512MB)

Thanks for any help that can be provided.