Password locked...we don't have the password!

If you have the current password, use it to access the bios password screen in your BIOS menu and leave the new password blank.
Assuming you don't have the BIOS password, there is generally a white jumper connecting two pins on the system board. With this removed, the BIOS password will not lock out changes to the BIOS. This is especially useful if you've purchased a used system that the previous owner locked out.

Don't know laptop password? Don't worry about it, Smartkey Windows Password Recovery can help find laptop password, and you can see the detail direction from http://www.recoverlostpassword.com/products/windowspasswordrecovery.html

Do you want to change laptop password? If so, you can use Smartkey Windows Password Recovery to help you,

Step1: Download Windows Password Recovery from http://www.recoverlostpassword.com/products/windowspasswordrecovery.html.
Step2: Install and launch it to any accessible computer.
Step3: Use a blank and writable CD/DVD/USB to burn Windows password reset disk with the tool.
Step4: Boot the locked computer from CD/DVD/USB.
Step5: Start to remove Windows password with the burned disk.
Step6: Reboot computer and login to the locked PC without password.

You can reset windows 7 password with Smartkey Windows Password Recovery Enterprise, just need 4 steps to reset lost Windows 7 password.

Step1: Download Windows Password Recovery Enterprise and install on any available PC.
Step2: Burn Windows 7 password reset CD/DVD or USB to reset lost Windows password.
Step3. Set your locked pc BIOS to boot from CD/DVD-ROM or USB Flash Drive.
Step4. Reset lost Windows 7 password to Re123456 together with the burned CD/DVD or USB Flash Drive.

Locked Password where? Bios Password? Hard Drive Password? Windows User Account (userid) Password? And which operating system?

If it's the Bios Password, then you will need to remove the CMOS Battery and let the computer sit for a couple of hours. Then put the battery back in and try rebooting. You'll have to go back into the BIOS or Setup to put the correct date and time in but the password should be gone from memory.

If it's the Hard Drive Password, you're kinda out of luck. Hard drives are locked 99% of the time when the computer is stolen. The original owner either locked it while he had possession of it or he could have locked it remotely when it was stolen to keep thieves from getting to sensitive data. The only way around it is to have the original put the password in, or Purchase a new hard drive to put in the computer, reload the operating system, reload the drivers and reload application programs.

If it's the Windows Password for User Account turn off the computer, then turn it on and immediately start hitting the F8 key until you see the SAFE MODE Option. Take the Safe Mode option to boot the computer. When it comes to the login screen it will show you the Administrator account and the Account for which you forgot or don't know the password. Log into the Administrator account (hopefully you didn't password protect it and forgot it). When windows desktop comes up click Start/Control Panel/User Accounts. When the User Accounts window opens up click on the User Account for which you forgot the password then select Remove Password. Reboot the machine

You don't know your operating system's password, then you'll do one thing which is 'install a new OS in your PC'

Firstly, try the obvious. You don't have your caps lock on, or if you are using a smaller keyboard laptop, you don't have the number lock on. If not, then it's possible your account has had its password changed.

You can go to http://www.facebook.com/reset.php to reset your password.

If you put in your information on an untrustworthy site, your email may have been hacked. You can try clicking "forgot your password?" or "Forgot Password" and request to enter a new one. Also, make sure Caps Lock is off when you enter it.

If you Forgot Windows Administrator password and have change the build-in administrator password and now forgot it, you will be unable to hack forgotten windows password by Command Prompt or Safe Mode . Then windows password recovery software is your best choice to bypass the locked out computer, it is the most effective windows password hacking method on the market. Don't take my word for it, why don't you have a look for this utility and try to crack windows administrator password by yourself,
Visit: Software to crack Windows Administrator password.

If you are locked out you can enter the wrong password several times and the phone will restore to factory settings. The downside to this is you lose everything unless you used the backberry server and saved!