Apologies if this topic is discussed elsewhere but I could not locate if so. After installing Windows 10 from 8.1 my Realplayer began showing my videos with a purple blackish border underneath the video and to its right. Irregardless of the setting it remains and previously it showed the videos in its full screen. Currently it is set on Normal mode which is my typical setting but I've tried all the others with no success. I use two 24 inch Dell monitors (S2440L) with a GEForce 210 video card. But the problem came with the new operating system and it changing a setting. Help will be so appreciated.