See
http://word.mvps.org/FAQs/AppErrors/ProbsOpeningWord.htm .
In Word, click on Tools | Options | File Locations, and note the
folder designated for User Templates. That is the folder where
your Normal.dot template is stored. In some versions of Office
and Windows, the file and folder are hidden, so you have to turn
on display of hidden files and folders in Windows Explorer or My
Computer by clicking on Tools | Folder Options | View tab | click
the "Show hidden files and folders" radio button | OK.