Jami, it's likely that your file didn't get deleted, but became corrupted when you started having problems with your computer. If the game encounters a corrupted savegame file, it will not be able to load it and will treat it as if there is no game in that slot. Arnie's suggestion is what I was referring to in my earlier post, but if you've run your game several times since then, it may be too late.
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Barbara
Unicorn
Last Day of Work