a nice security measure , but ineffective if someone has physical access to your hard drive . ( They'll just install it in another PC and boot from a different disk . ) You should enable hard drive encryption for the best protection against data thieves . But also use additional BIOS tricks enable more layers of security , asking for another password to boot , access the drive , or change BIOS settings . Here's how to adjust those system settings .
Enter the BIOS configuration when starting PC . Press the prompted key ; often , it's an F-Key , Delete , or ESC . Navigate with the arrow keys , select with Enter , and back out with ESC . Different BIOS interfaces vary , but look for the security settings . Here's how the options on a common PhoenixBIOS system work .
Supervisor Password : Enable and change this password to prevent someone from changing these BIOS settings in the future . For example , if you don't want someone booting from a CD or external drive on one of your work systems , first disable those options in the Boot menu , and then enable the password here . If troubleshooting in the future , you can restore those boot options after entering the BIOS password .
User Password : Add an extra password prompt before getting to the Windows login screen . This provides a small , extra security step against unauthorized access . First set the user password , then enable it on boot .
HDD Password : For the best disk protection short of encrypting your drive , enable the hard disk password . If this option is supported on your system , the password settings are stored on the disk itself , preventing access even if installed in another PC . A data-recovery service could likely still access your files since they're unencrypted . So remember that it's still possible—although quite difficult—for someone else to access the data .
Remember your passwords . Store them on another PC or somewhere else secure ; if you forget any of these , the reset process can be difficult or impossible . Use the BIOS settings you want to disable these passwords in the future . Enter the box to make a change , enter the old password , and then leave the new password blank .
By the way , in order to keep your Windows being accessed by illegimate persons , you also need to set a Windows login password . When logon the laptop , it will ask for a login password . Of course , compared to bios password , it can be a big trouble if you forgot Windows password . As a Windows 7 user , i have encountered the terrible trouble before , and luckily , a tool named Windows Password Unlocker gives the way to bypass Windows 7 password in a short time.