As Jerry asked, which version of Word do you have. When Word is up & running, first thing, select Help/About from the main menu. That will shows the version. Post back with the full descriptive version number.
Also, try to provide much more detail. What do you really mean by crash? What error or fault message did you see? Write it all down & post back with that info. What were you doing at the time of "crash" ? Had you been typing a very large document?
Did all of Windows "crash", freeze up, show a STOP error??? or was it only Word?
Is your Windows running well before you start using Word?
Right Click the My Computer icon on desktop. Select Properties.
Next, select Advanced. Look for a block that says Startup and recovery. Press the settings button.
In System failure section, turn off (un-check) Automatically restart.
Write an event to system log should be Checked (selected).
More on program crashes:
See what Event Viewer has in it's log. Select Start button/ select Run , then type in
eventvwr.msc<enter>
-- or Go to Control Panel / Performance and Maintenance/Administrative Tools >Event Viewer.
Review the sections and look for Errors or Warnings that match the time the event occurred.
Double click---the information "may" give a clue.
Tips on research & making good posts
