Forgot Windows administrator password and locked out of your PC? Most of Windows password recovery tools require you to create a bootable disc for cracking a password, but what do you do if you don't have a blank CD or USB stick in hand? This tutorial will show you how to boot your locked PC directly over Network Interface Card (NIC), so you can then reset forgotten Windows password without using a CD or USB drive.
PXE works with Network Interface Card (NIC) of the system by making it function like a boot device. Nearly every modern Windows PC has a BIOS which supports PXE booting. Just put the PCUnlocker Live image on a PXE server, you can then boot any other PC/netbook on the same LAN network to use PCUnlocker for resetting a lost Windows password!
Check out this article for detailed instructions:
Windows Password Recovery Using PXE Network Boot