Hello,

I have contacted Microsoft 3 times about this issue and they were unable to help me.  I hope someone here can.  

I need to make a video for work that includes pictures and music.  When I uploaded one jpeg file, I lost all sound on my computer.  I was only able to get the sound back by doing a system restore.  (Microsoft said the problem was because I didn't have the latest version of the driver, but I do.)  After the system restore, the videos played with sound in Windows Media Player and VLC Player, but when I tried to open them in Movie Maker to edit them, not only was there no sound, there was now no video as well. 

Does anyone know how I can fix this?  As well, if anyone can tell me how to delete from my system the videos that are now blank and silent when opened up in Movie Maker, that would be great.  When I try to delete them, I get an error message saying it is open in Movie Maker, which it is not.  

Thank you so much for your help.