How do you unlock a laptop if you forgot your password and do not have the boot up disk?

I once forgot my Dell laptop password on Windows 7. Finally I used Windows Password Key to unlock my computer. It can unlock other Windows passwords like Windows Vista/XP/8. Here are detailed steps below. Hope to help you.

1. Download Windows Password Key, install and launch it on another available PC. Inset a USB flash drive into it. Click "Burn".

2. Insert the newly created USB drive to the locked computer. Set USB drive as the first boot device in BIOS setup. This computer will reboot.

3. Reset your laptop password with the burned USB.

You can download it from lostwindowspassword.com
Go onto someone elses account. ( Always have a a guest account with no password) Control Panel\User Accounts and Family Safety's Accounts/ Manage another account