CMOS Boot Password removal method

Open the chassis, locate the battery on the motherboard, disconnect it from the motherboard (just remove the battery), and CMOS will lose all internal storage information due to power loss. Re-connect the battery, close the chassis boot, because the CMOS is a blank, it will no longer require you to enter the password, this time into the BIOS setup program, select the main Menu "load BIOS default" (Load BIOS defaults) or "Load SETUP default" ( Load the Setup program defaults), the former in the most secure way to start the computer, the latter can make your computer play a higher performance genuine XP system download.

Magical Debug Erase CMOS password

If you have forgotten the password to enter the CMOS Setup program, in addition to the use of jumper short-purge method on the motherboard, you can also use the method of software removal, the following describes how to clear the CMOS password under DOS method.

Provide an editor in DOS, that is, debug, this is a very useful tool, the starting method is to enter the command at a DOS command prompt: Debug, this time you can enter the debug editing interface.

After you enter the command in the command state, restart your computer to clear the CMOS password, and below are five command lines to clear the CMOS password.

Method One

-O 70 16

-O 71 16

-Q

Method Two

-O 70 11

-O-F FF

-Q

Method Three

-O 70 10

-O 71 10

-Q

Method Four

-O 70 23

-O 71 34

-Q

Method Five

-O 70 10

-O-F FF

-Q

Method Six

-O 70 90

-O 71 91

-Q