How to get rid of the green screen from BrinH

Using Windows 7 with Firefox 33, Internet Explorer 11 and Flash Player 15.0.0.189. Each time I try to play a video instesd of the start playing arrow a green screen opens, the audio plays for about 30 seconds and then stops. I have to use Task Manager to close the page. I have uninstalled and then reinstalled Firefox,IE and FP with no effect. Any help would be appreciated