All had been working well until a few days ago. For some reason, now when I double-click a video file, I can hear the audio but I get no video. I must open WMP manually, and then I get the video of what I'm hearing. I used to double-click a video and it automatically opened WMP.
Then, to close WMP, I must stop the video first. Because if I don't, the audio will continue even though the video will not be seen. I then have to re-open the player, stop the video, then close WMP. I used to close the program (X on the WMP) and it would all (video and audio) close,