Many people use their PCs and laptops to watch movies, music videos and other types of video clips. When you watch a video clip that requires flash, the "Press Escape to Exit Full Screen Mode" message appears. The message serves as a reminder to viewers of how to exit the full screen mode; however, it can be very annoying to users who watch a lot of videos. Disable the function on your flash player to remove the message permanently.
Go to the flash settings Web page for Adobe called the Global Storage Settings Panel.
Check the box for "Allow Third-Party Flash Content to Store Data On Your Computer."
Move the slider to "None." This should prevent the message from appearing.
Go to the Windows icon and select "Control Panel." Select "Programs." Click "Uninstall" to uninstall the flash player if the above steps do not work. Go to the Adobe Website to reinstall the flash player. Sometimes computer installations cause glitches that prevent software or applications from functioning properly. Reinstalling the program may resolve the issue.
The message automatically goes away after a few seconds; if it doesn't annoy you too much, just let the message expire after a minute. This will save you the trouble of having to reinstall programs.