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PC Knowledge Base - Windows Operating System Clear Cmos

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The following debug routine will clear CMOS, BIOS, Passwords, Settings, Viruses, 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 ensure that you have typed the line in correctly, if not retype. Ensure that you do not skip any lines, that it is ALL typed in correctly to help prevent problems.

Before running this Debug routine ensure that you have read the Debug warning message.
After typing debug you will get "-" which is were you can begin by typing A and pressing enter.

A ENTER
MOV AX,0 ENTER
MOV AX,CX ENTER
OUT 70,AL ENTER
MOV AX,0 ENTER
OUT 71,AL ENTER
INC CX ENTER
CMP CX,100 ENTER
JB 103 ENTER
INT 20 ENTER
ENTER Note: Nothing is typed on this line
G ENTER By pressing G this will execute the above script, ensure you have read and agree to the debug warning message. Q ENTER
Then reboot and you will get a Setup Checksum Error. Go into setup, correct all the incorrect values, time, date...



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