G
Guest
After trying to insert a video on a Powerpoint slide, a black block appears
in the top-left corner of the screen and Powerpoint no longer responds. The
black box is less than a quarter of the screen size and does not cover up the
menu bar or the tool bar.
in the top-left corner of the screen and Powerpoint no longer responds. The
black box is less than a quarter of the screen size and does not cover up the
menu bar or the tool bar.