Computer Set the power-on password

Power-on Password:
for Windows XP, there are generally three ways to set up a power-on password, that is, the system user password, the system startup password, and the BIOS password. The setting methods are as follows:
One, the system set the user password method:
start → control Panel → user account → Select your account → create password → Enter two times password → Press the "Create password" button can be.
If you want to cancel the password, simply enter when you require a new password in step 2nd.
Two, to set the startup password in the system:
Windows XP provides a more secure and effective "system startup password" In addition to setting the user's password in the Control Panel's user account to ensure system security, which is displayed prior to the "User password" on power-on. You can also create a key disk. If you set the system startup password, the system will be more secure. Windows XP Sets the system startup password as follows:
Click Start to Run, enter "Syskey" in the Run dialog box (don't enter quotes), press OK or enter to eject the secure Windows XP Account Database dialog box. In the dialog box, click the "Update" button, pop-up "Startup Password" dialog box, select the "Password to start" single option, the following input system startup password, press "OK" button.
to cancel the "Start password" of this system, press the above action in the "Startup Password" dialog box, select the "System generated password", and then select the following "Save startup password on this computer" can be determined after the startup password will be saved to the hard disk, the next time the startup will not appear when the password window.
Startup Password appears before the login screen, only if the correct startup password is entered, the login screen will be displayed before the user can enter the user name and login password to fully log into the system. As such, the system has two password protections.
Three, the BIOS to set the password method (different machine):
1, Boot press the DEL key into the CMOS settings, the cursor to the "Advanced BIOS Features (Advanced BIOS feature Settings)" Enter, open the Advanced bios Features page, locate the "Security Option (check password)" or "Password check (check password)" To set it to system (Note: This item has two settings, System and Setup, When set to system, power-on into the CMOS settings and enter the operating system to enter the password, set to setup when the only power-on into the CMOS settings to enter the password, press Esc key back to the main page;
2. Move the cursor to the set Supervisor PAssword (Super Admin password) "Enter the window in the presence of the password and return to enter the window in the presence of the same password and return, CMOS will be back to the password record and return to the main page."
3, on the main page to move the cursor to the Save & Exit (Storage exit) return, press the Y key, and then enter. 3lian.com
Select Set User Password in step 2nd to set User password, the difference between user password and Super admin password is: The user password to enter the CMOS settings can only see can not modify.
The security of the system-initiated password is the highest in the above three passwords, followed by the user password, with the lowest security for the BIOS password. The BIOS password can be removed by removing the battery on the motherboard, and the user password can be found on the internet a lot of cracked methods, but the startup password is also difficult to find a way to crack. It is recommended to set the startup password and user password at the same time, so that there is a double password protection, not only to enter the password on the power-on, but also in the temporary departure by the Windows logo key (CTRL and ALT between the key) and the letter L key lock the computer (when locked, the computer returns to You must enter a support password to return to the system for normal operation so that others cannot use it.