If you are getting unwanted multiple boot screen
Then Follow these

Steps.
1> Right Click on My Computer
2>Select Properties
3>Select Advanced Tab
4>Select Settings In the Startup & Recovery Section(3rd grp)
5>Select the operating system which u want.
6>And Click OK.
7>Further again press the setting and click on Edit.
8>It will open boot.ini File.
9>Now u can delete those o/s which you don't want to be displayed.


Note: For deleting operating systems from boot.ini file, keep it mind that you can'tdelete that o/s which is selected by default there. Beforemaking any changes make a copy of boot.ini file.