There are two passwords in BIOS. One is start up password, the other is BIOS setting password. If you have forgotten the start up password that means you cannot open computer at all. Then the first method is the only thing you can do. Other methods can use to clear setting password.
==①:Motherboard Battery Discharge==
The common way to reset start up password is discharge Motherboard Battery. Most of the current motherboard BIOS is using the button batteries to provide electric power.That means if there is no electricity, the information it contains will be lost. When it’s on power again, BIOS will set back to its original state, of course, there will be no BIOS passwords. But you will lose your setting at the same time.
What we need to do is to power off computer, open the computer box, and then unplug the power plug of the computer to make sure that it is no electricity at all. Then locate the white silver button battery on the motherboard. Remove the battery carefully. Perhaps 30 seconds later, put back the battery.
After put back the computer box then power on, the system will prompt “CMOS Checksum Error-Defaults Loaded”. That means CMOS errors detected during inspections, had been included in the system default, BIOS password cracking success!
On some motherboards, the battery is soldered to the motherboard, making it difficult to remove. If this is the case, you have another alternative. Somewhere on the motherboard you should find a jumper that will clear the BIOS password. If you have the motherboard documentation, you will know where that jumper is. If not, the jumper may be labeled on the motherboard. If you are not fortunate enough for either of these to be the case, you may be able to guess which jumper is the correct jumper. This jumper is usually standing alone near the battery. If you cannot locate this jumper, you might short both of the points where the battery connects to the motherboard.
==② : Backdoor BIOS Password==
Each motherboard manufacturer has set a backdoor password in order to facilitate the provision of technical support. The backdoor password is a BIOS password that works, no matter what the user sets the BIOS password to. These passwords are typically used for testing and maintenance. Manufacturers typically change the backdoor BIOS passwords from time to time.
AMI Backdoor BIOS Passwords
Reported AMI backdoor BIOS passwords include A.M.I., AAAMMMIII, AMI?SW , AMI_SW, BIOS, CONDO, HEWITT RAND, LKWPETER, MI, and PASSWORD.
Award Backdoor BIOS Passwords
One reported Award backdoor BIOS password is eight spaces. Other reported Award backdoor BIOS passwords include 01322222, 589589, 589721, 595595, 598598 , ALFAROME, ALLY, ALLy, aLLY, aLLy, aPAf, award, AWARD PW, AWARD SW, AWARD?SW, AWARD_PW, AWARD_SW, AWKWARD, awkward, BIOSTAR, CONCAT, CONDO, Condo, condo, d8on, djonet, HLT, J256, J262, j262, j322, j332, J64, KDD, LKWPETER, Lkwpeter, PINT, pint, SER, SKY_FOX, SYXZ, syxz, TTPTHA, ZAAAADA, ZAAADA, ZBAAACA, and ZJAAADC.
Phoenix Backdoor BIOS Passwords
Reported Phoenix BIOS backdoor passwords include BIOS, CMOS, phoenix, and PHOENIX. Backdoor BIOS Passwords from Other Manufacturers Reported BIOS backdoor passwords for other manufacturers include:
| Manufacturer | BIOS Password |
| VOBIS & IBM | merlin |
| Dell | Dell |
| Biostar | Biostar |
| Compaq | Compaq |
| Enox | xo11nE |
| Epox | central |
| Freetech | Posterie |
| IWill | iwill |
| Jetway | spooml |
| Packard Bell | bell9 |
| QDI | QDI |
| Siemens | SKY_FOX |
| SOYO | SY_MB |
| TMC | BIGO |
| Toshiba | Toshiba |
Remember that what you see listed may not be the actual backdoor BIOS password, this BIOS password may simply have the same checksum as the real backdoor BIOS password. For Award BIOS, this checksum is stored at F000:EC60.
==③: Software Crack==
There are a lot softwares to test systems or start up password, but they need to run on Windows. So it is only used to reset BIOS setting password.
!BIOS will recover the BIOS password for most common BIOS versions, including IBM, American Megatrends Inc, Award and Phoenix.
CmosPwd will recover the BIOS password for the following BIOS versions:
•ACER/IBM BIOS
•AMI BIOS
•AMI WinBIOS 2.5
•Award 4.5x/4.6x/6.0
•Compaq (1992)
•Compaq (New version)
•IBM (PS/2, Activa, Thinkpad)
•Packard Bell
•Phoenix 1.00.09.AC0 (1994), a486 1.03, 1.04, 1.10 A03, 4.05 rev 1.02.943, 4.06 rev 1.13.1107
•Phoenix 4 release 6 (User)
•Gateway Solo – Phoenix 4.0 release 6
•Toshiba
•Zenith AMI
If all else fails, you might be going to lose some money for technician. But they will use these same methods, try hard by yourself.
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Tags: bios password, forgotten BIOS password, reset bios password
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i have the new wyse laptop with no hard disk or cd rom lol.. and its locked to admin. when i try go in to the bios that asked for passowrd to,, can you help?
How to Reset BIOS Password? will help you resolve the BIOS password.
but I think we have no idea how to remove your admin password.
Windows Password recovery have to start up another program from another intermedium to delete your password.
Even reinstalling windows still needs a CD drive.
To Contact your laptop manufacturer maybe the best way.
sorry that I cannot do anything else.
Sorry!!We only accept English comments！
Thank you and welcome to our blog!
Have fun!
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The same thing used in step 1 to reset the bios also happens if your battery is toast. Replace it and the bios will get back to saving your date time and settings.
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is there a way to enter in some "backdoor pass" but yet at the same time not have the orriginal pass reset? heres an ex. i want to get on my friends comp, but as normal its bios passworded, i want to know if i can type in a password that works but dosent do anything to the original pass, so getttin in his computer but like stealth mode.
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Took out the mother board battery in my laptop. The laptop then beeped a few times when I turned it on. Now my laptop is just showing a black screen. Nothing at all is showing up!! The buttons on my laptop blink. Why? help?
Hi. I can’t remove password from BIOS. I’ve tried to reset my BIOS password making short on both of the points where the battery connects to the motherboard. When i powered up my laptop and enter BIOS, message Error checksum bad – Using default configuration was show. I’ve select option F1 – Load default configuration, PC than restart and password is required again. Why? Please help
Have you discharged the battery?
I am sorry.
I only can provide the common ways to remove BIOS password.
If they doesn’t work for you, you’d better turn to the technologist!