A family of Microsoft word processing software products for creating web, email, and print documents.
Sounds like "corruption" but I have no way of telling if it is your NORMAL.DOTM or registry.
First thing to try is a "repair"
Repair or Uninstall Office 2010 - http://office.microsoft.com/en-us/excel-help/repair-or-remove-office-2010-HA010357402.aspx?CTT=1
If that didn't work, follow the steps in the procedure to see if it fixes the problem:
How to troubleshoot problems that occur when you start or use Word 2010, 2007, 2003, or 2002 http://support.microsoft.com/kb/921541 (no %temp% folder)
You might also want to take a look in the event viewer to see if there is any more detailed information logged. There may also be links to possible fixes:
Examine the Vista/Win7 Event Viewer
**http://windows.microsoft.com/en-US/windows-vista/Open-Event-Viewer**how to start event viewer
**http://www.petri.co.il/vista-event-viewer.htm**- what you are seeing in the event viewer & how to use it
Vista and Win7 Event Viewer are essentially the same.
Something is “broke”. Is there an error message? It should be recorded in the Event Viewer, along with more details.
To take a look in the Event viewer, go to the Start menu, enter "event" in the search window, click on "Event Viewer".
In event viewer, open the Error and Warning message categories. Look for a source like Outlook or MS Office and also look for the time that you had the problem (ie just a couple of minutes ago).
Report the error code and full, exact error message text you find that appear relevant.