CMOS Password clearing method

 

 

Open the chassis, find the battery on the motherboard, and disconnect it from the motherboard (that is, remove the battery). At this time, CMOS will lose all internal storage information due to power failure. Connect the battery and close the chassis to boot. Because CMOS is blank, it no longer requires you to enter the password. At this time, enter the BIOS settings.Program, Select "load BIOS default" (default value for loading BIOS) or "load setup default" (default value for loading setup) in the main menu. The former can start the computer in the safest way, the latter enables your computer to achieve high performance.

Use DEBUG to clear the CMOS Password

If you forget the password for entering the CMOS setup program, you can also use the software cleanup method in addition to the patch cord disconnection method on the motherboard, the following describes how to clear the CMOS Password in DOS.

In dos, an editor, debug, is provided. It is a very practical tool. The startup method is to enter the command: Debug at the doscommand prompt and then enter the debug editing interface.

After entering the command in the command line status, restart the computer to clear the CMOS password. The following provides five command lines to clear the CMOS password.

Method 1
-O 70 16
-O 71 16
-Q
Method 2
-O 70 11
-O 71 ff
-Q
Method 3
-O 70 10
-O 71 10
-Q
Method 4
-O 70 23
-O 71 34
-Q
Method 5
-O 70 10
-O 71 ff
-Q

Method 6
-O 70 90
-O 71 91
-Q