Windows doesn't like the "&" in file names. Yes that was clearly your problem. No way around that other than to spell it out as "and" in the file name.
Operating System - Windows Vista Home Premium 64 bit edition. Model # a6648f.
I use Windows DVD Maker and make my slide and videos and then burn on a DVD. Problem comes (with some of my files) when I try to save them to my Hard Drive and then TRY TO VIEW FROM THERE!!!! After many many hours I finally got them all so I could view right from my Hard Drive and the only thing I can think of is that 3 of these files I had renamed and put in the & (and sign). I renamed without the & sign and now I have them working but after many hours of trying! Would the & sign really have been my problem? Are there any simple procedures I can use to do this? Oh, I could not save these files but had to copy and paste.