Ralphs Tips

Debug BIOS
  • This will clear CMOS & Values.

  • The following debug routine will clear CMOS, BIOS, Passwords, Settings, Virus's, and other items residing in the CMOS.

    During this process you may get returned characters which are an indication that the string has gone in.
    if you by chance get ERROR insure that you have typed the line in correctly, if not retype.
    Insure that you do not skip any lines, that it is ALL typed in correctly to help prevent problems.

  • After typing debug you will get "-" this is were you begin the below script.

    Note: When running this script, you will see below MOV AX,0 the MOV is all letters, the 0 after the comma is a ZERO NOT a letter, if you type in a O and press enter, it won't harm anything, it just gives you an error on the line below with a carrot sign ^ pointing at the O.
    You can continue with the script typing in the right commands.

Debug Prompt:		Command
-			A 
0CEA:0100		MOV AX,0  
OCEA:0103		MOV AX,CX  
OCEA:0105		OUT 70,AL  
OCEA:0107		MOV AX,0  
OCEA:010A		OUT 71,AL  
OCEA:010C		INC CX  
OCEA:010D		CMP CX,100  
OCEA:0111		JB 103  
OCEA:0113		INT 20  
OCEA:0115		 

Note: Nothing is typed on this line * G By pressing G this will execute the above script.

You will get a prompt after this saying program terminated normally followed by a normal debug prompt.

- Q

Then reboot and you will get a Setup Checksum Error. Go into setup, correct all the incorrect values, time, date.


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