How to Reset BIOS Password

How to Reset Your BIOS Password on Windows Laptop

Nov. 12, 2013 11:26 am / Posted by Michael Eric to Windows Tips
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When need BIOS Password?

BIOS is software stored on a small memory chip on the motherboard. BIOS has been presented in the computer from the pre-initial stage of its use before you turn on your computer. It instructs the computer on how to perform a number of basic functions such as booting and keyboard control. BIOS is also used to identify and configure the hardware in a computer such as the hard drive, floppy drive, optical drive, CPU, memory, etc.

Once if you encrypt your BIOS with a password, it is required whenever you turn your computer on in order to boot your installed operating system. If you can't remember a BIOS password, you're pretty screwed because you won't be able even boot up Windows just like forgetting your Windows password.

Note: If you forgot Windows password and be locked out of your Windows system, use Windows Password Recovery to recover forgotten Windows password.

recover your bios password on windows

How to Reset BIOS Password on Windows 8.1/8/7/Vista/XP Laptop?

Method 1. BIOS Password Reset with DEBUG

Here we will introduce how to reset your forgotten BIOS password on Windows with DEBUG. All debug commands can be aborted at any time by pressing Ctrl/C. Moreover, it works for any brand computers. Go through these steps as below to remove Windows BIOS password instead of removing the battery or jumpers.

  • Step 1. Restart your computer in MS-DOS mode.
  • Step 2. When you get to the C:> or C: WINDOWS> prompt, type DEBUG and press Enter.

    A hyphen (-) prompt will appear waiting for you to enter commands.

  • Step 3. Enter the following commands, pressing Enter after each one.

    Note: the o is the better o and stands for OUTPUT.
    O 70 2e
    0 71 ff
  • Step 4. After the q command (which stands for QUIT), enter Exit.

Then try to enter your BIOS at bootup. The password prompt should now be gone and you should now have full access to it again. However, you will be at the default BIOS settings and may want to change them to your preference.

Method 2. BIOS Password Cracker with Backdoor Password

Some BIOS manufacturer put a backdoor password in BIOS which always works irrespective of what password you have set in BIOS. It's a master password which is used for testing and troubleshooting purposes. It's really a great way to recover BIOS password on your PC. However, different brand PC has different backdoor password. Check them now.

Phoenix Backdoor Passwords:
  • BIOS
  • CMOS
  • phoenix
Other Manufacturers Backdoor Passwords:
  • VOBIS and IBM – merilin
  • Dell – Dell
  • Compaq – Compaq
  • IWill – iwill
  • Enox – xo11ne
  • Epox – central
  • Siemens – SKY_FOX
  • Sony – Sony
  • Toshiba – Toshiba

Though a password can provide a basic and very effective level of PC security, losing it can be a real headache if you don't know how to fix the problem. Above, you learnt how to bypass BIOS password on Windows. Try the best to remember your passwords of your own.

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