How do I enable the NUM LOCK key for the logon screen in Windows 7?

In Windows 7 NUM LOCK is disabled by defaul at logon.To enable NUM LOCK before a user logs on, follow these steps:

Step 1 - Run Registry Editor.Open Run(windows key+R or Start-->AllPrograms--> Accessories-->Run) and type regedit.

Step 2 - find the following registry key: HKEY_USERS\.Default\Control Panel\Keyboard.

Step 3 - Change the value for InitialKeyboardIndicators from 2147483648(you may have value 0 here) to 2.
Done.Reboot your PC and presto!!Num Lock ON at welcome screen.

Post update 14.7.2011 if you install windows 7 sp1 the num lock is active at startup  by default