BIOS passwords are actually used to add some additional security to computers. You are able to either set a password in order to stop access to BIOS settings or perhaps to prevent PC from booting.
But sometimes this extra security might be a pain when you forget the BIOS password or perhaps someone changes your system BIOS password intentionally.
But there’s no need to worry. There are lots of known ways to reset/remove/bypass the password:
so now I will try to explain each method one by one
By Removing CMOS battery
DISCLAIMER: This information is intended for experienced users. It is not intended for basic users, hackers, or computer thieves. Please do not try any of following procedures if you are not familiar with computer hardware. We’ll not be responsible for the use or misuse of this information, including personal injury, loss of data or hardware damage. So use it at your own risk.
Almost all motherboards use a small coin-sized CMOS battery to keep all BIOS settings along with the password.
In order to reset the password, unplug the PC, open the cabinet and remove the CMOS battery for approx. 15 30 minutes then put it back.
It will reset all BIOS settings also as the password and you will have to re-enter all settings.
If it fails, then try to get rid of the battery power for at least one hour.
By Using Motherboard Jumper
Just about all motherboards contain a jumper that will clear all CMOS settings along with the BIOS password. The location of this jumper varies based upon the motherboard brand.
You need to read your motherboard manual to check out its location. When you do not have the manual then look for the jumpers near the CMOS battery.
The majority of the manufacturers label the jumper as CLR, CLEAR CMOS, CLEAR, etc.
When you discover the jumper, look carefully. There’ll be three pins and the jumper will be joining the center pin to either right or left pin.
What you have to do, is actually get rid of the jumper and join the center pin to the opposite pin. e.g. if the jumper joins center pin to the left pin, then remove it and join center pin to right pin.
Now wait for a couple of seconds and then again remove the jumper and join the center pin to the left pin.
Be sure to turn the PC off before opening the cabinet and resetting the jumper.
By Using MS-DOS Command
This strategy works only in case you have a chance to access the system when it turned on because this technique requires MS-DOS. Open Command Prompt from Programs menu and provide following commands one by one:
debug o 7O 2E o 71 FF quit
NOTE: The very first character in the above commands is actually the English alphabet “o” and not the number zero.
After giving the above commands, restart the system of yours and it should reset the CMOS Settings along with the BIOS password.
If you’re curious to know exactly how it works? then let me clarify the above commands:
Within this method, we’re 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 and 71 are actually port numbers that are actually used to access CMOS memory. By providing FF value we’re telling CMOS that there’s an invalid checksum and it resets the CMOS settings also as BIOS password.
You will find a number of software program which can reset CMOS settings or perhaps BIOS password or perhaps both within a couple of clicks. But as stated above you should have access to a system that is turned on and must have access to MS-DOS or perhaps MS Windows:
By Using Backdoor BIOS Password
Some BIOS manufacturers put a backdoor password in BIOS which always works regardless of what password you’ve set in BIOS. It’s a master password that can be used for testing and troubleshooting purposes.
AMI BIOS Passwords:
AWARD BIOS Passwords:
shift + syxz
PHOENIX BIOS Passwords:
Misc Common Passwords:
Other Manufacturer BIOS Passwords:
Biostar - Biostar
Compaq - Compaq
Dell - Dell
Enox - xo11nE
Epox - central
Freetech - Posterie
IWill - iwill
Jetway - spooml
Packard Bell - bell9
QDI - QDI
Siemens - SKY_FOX
TMC - BIGO
Toshiba - Toshiba
VOBIS & IBM - merlin
NOTE: All these passwords are case-sensitive and are changed from time to time by manufacturers.
Using Password generating websites
I was having an issue with my BIOS password ( InsydeH2O password). But all of these didn’t work for me therefor I used some websites to generate random passwords.
you can read more here at: how I reset my BIOS password