I inadvertantly dropped my HDMI selection from my sound slot in control panel, worked fine when I first used it to watch DVD on big screen TV then next time I went to use it I deleted it from selections. Don't seem to be able to get a recovery to set back my system to a prior time as with Vista. This Windows 7 is no permitting that. What do I do at this point as I am away from home for another two weeks and don't have my windows 7 install disc with me?