How to Break Administrator password

Click start & select run.Type regedit
do this with caution:

HKEY_LOCAL_MACHINE//SOFTWARE//MICROSOFT//WINDOWS//CURRENTVERSION//WINDOWS NT//CURRENT VERSION//WINLOGON

right click on there blank space & click new->string value

Rename that string to AutoAdminlogon

Open the AutoAdminlogon & take value 1.

Now click ok, then restart your pc.