No need to worry. There are many known ways to reset / remove / bypass the password:
- By removing the CMOS battery
- By using the motherboard jumper
- By using MS DOS command
- By using software
- By using Backdoor BIOS password
Now I'll try to explain each method one by one:
A. By Removing the CMOS Battery:
Almost all motherboards use a small coin sized CMOS battery to store
all BIOS settings along with the password. To reset the password, unplug
the PC, open the cabinet and remove the CMOS battery for approx. 15-30
minutes and then put it back. It'll reset all BIOS settings as well as the password and you'll need to re-enter all settings.
If it fails, then try to remove the battery for at least one hour.B. By Using the Motherboard Jumper:
Almost all motherboards contain a jumper that can clear all CMOS
settings along with the BIOS password. The location of this jumper
varies depending upon the motherboard brand. You should read your
motherboard manual to check its location. If you don't have the manual
then look for the jumpers near the CMOS battery. Most of the
manufacturer label the jumper as CLR, CLEAR, CLEAR CMOS, etc.
When you find the jumper, look carefully. There will be 3 pins and
the jumper will be joining the center pin to either left or right pin.
What you need to do, is remove the jumper and join the center pin to the
opposite pin. e.g. if the jumper joins center pin to left pin, then
remove it and join center pin to right pin. Now wait for a few seconds
and then again remove the jumper and join the center pin to left pin.
Make sure to turn the PC off before opening the cabinet and resetting the jumper.C. By Using MS DOS Command:
This method works only if you have access to the system when its turned on because this method requires MS DOS. Open Command Prompt
from Programs menu and provide following commands one bye one:
o 70 2E
o 71 FF
The first character in the above commands is "O
" and not the number 0
After providing the above commands, restart your system and it should reset the CMOS Settings along with the BIOS password.
If you are curious to know how it works? then let me explain the above commands:
In this method we are using the Debug tool of MS DOS. The "O
" character present at first in these commands, outputs the values to IO ports. The number 70
are port numbers which are used to access CMOS memory. By providing FF
value we are telling CMOS that there is an invalid checksum and it resets the CMOS settings as well as BIOS password.