Word 2007 files saving empty

It happens to me frequently -I now make sure I first save my work as text files, si I can at least recover them when this happens. Seems to be no reason - though my Word installation keeps trying to reinstall .

Microsoft is total **** - but there is no reasonable alternative so long as all the other idiots keep using it! . MS charges $99 for support that should be free! OpenOffice is great, but I can't use that with my clients - they will think I am a numpty! Which I probably am for using Microsoft! my next compute will be a Mac!