Get Rid of Text in the Default Document
The Problem:
When I start Word, I get a document that already contains texta letter I wrote last month. I have to select the text and delete it before I can start working on my new document. The same thing happens when I click the New Blank Document button on the Standard toolbarthe document I get isn't blank at all.
The Solution:
You've somehow saved your document into Normal.dot, the global template that's always open when Word is running. In theory, it's hard to get text into Normal.dot unintentionally, but it seems to happen surprisingly often.
Choose Tools 
Options, click the File Locations tab, click the "User templates" item in the list, and check the Location readout. If the readout is abbreviated to fit into the space, click the Modify button, click the "Look in" drop-down list, and note the full path to the folder. Then close the dialog boxes.
Choose File Open, navigate to the templates folder, choose "Document templates" in the "Files of type" drop-down list, and open Normal.dot. Delete the offending text, choose File Save, and then choose File Close.