I can't access any video over the internet

Hi, I renewed my subscription to N360 a couple months ago.  Ever since I installed v.5 I have not been able to see videos on the internet - doesn't matter where, e.g., you tube, news papers, mtv.com, etc....  The audio come through fine, but the video images are blocked.  I tried the online support, but the robot does not understand the question so it was no help.  I have Windows 7, up to date Java, HP laptop bought a year and half ago.  Any ideas?  k