there is a solution for those who has forgotten their password. With no reinstalling, with no the original password, with no data loss, you can reset the password. As following, 1. Login to a computer that can link to Internet. Download Windows Password Unlocker 4.0 at http://www.passwordunlocker.com and decompress it on that PC. Note that: there is a .ISO file. Burn the .ISO file to a CD. 2 Get out the newly created CD and insert it to the locked computer. 3 Re-boot the locked computer and then followed the process of instructions. Just a few steps, the old password was removed.'' '4 Setting new password: Step one: Open the 'Control Panel' Step two: Click the 'User Account ' Step three: Select the account you wanna to set a new password. Step four: Click 'changing Account ' and 'set up password', then fill out the form as listed. Click 'Create Password'.