How to: Turn on Automatic Save.
Solution:
Select 'Options...' from the 'Tools' menu. Click the 'Save' tab. Select the 'Automatic Save' radio button.
1) Select the 'Tools' menu and select 'Options...'. (The 'Options' dialog box appears.)
2) Click the 'Save' tab.
3) Select the 'Automatic Save Every' check box.
4) Type an interval to save in the 'Minutes' box.
5) Click 'OK'.