Right-click on 'Computer', select 'Properties'.
Look for 'Advanced Settings' in the left pane then go to the 'Advanced' tab. 'Startup and Recovery' is at the bottom, select 'Settings'.
You can configure how Windows boots from there.
Also, you might want to look at the following for additional, advanced options.
Start>Run type 'msconfig' and go to the 'Boot' tab. Configure it how you like from there.