I did not know how to get it done the other day. Now, whether it is to open the doc document or start the word directly, a dialog box similar to "do you want open Word in safe mode" will pop up each time, it can only be started in safe mode. I did not find any results after I flipped through the Internet, and the problem still persists after I reinstalled the office. I guess it should be caused by a historical file, so I deleted the Temporary Folder (% Temp %. Inadvertently inserted, go to the following directory (dxl is the user name ):
C:/Documents and Settings/dxl/Application Data/Microsoft/office/recent
C:/Documents and Settings/dxl/Application Data/Microsoft/templates
C:/Documents and Settings/dxl/Application Data/Microsoft/word/startup
C:/Documents and Settings/dxl/Application Data/Microsoft
After a while of Del, the annoying start box of word security mode disappears.