How to clear BIOS passwords

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Aina Martin
@ainamartin
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Before getting to the heart of the tutorial, going to illustrate, in detail, how to clear the BIOS password, it seems only right to explain to you exactly what the BIOS and l 'UEFI e what are the differences between one and the other.


For starters, in case you aren't aware of it, the BIOS (acronym of “Basic Input-Output System) is a software that resides in a chip placed on the motherboard of the computer, which contains all the instructions to start the operating system and to put the hardware in communication with the software.

THEUEFI (acronym for “Unified Extensible Firmware Interface) is, instead, an evolution of the classic BIOS which has a graphical interface, has support for mouse and touch-screen and has some advanced security functions. As a rule, it is found on recent PCs, those equipped with Windows 10 and Windows 8.x.

You can set Password that allow you to avoid changes to the BIOS or UEFI and to preserve access to the system, thus making it impossible to start the OS and the programs installed on it. To be precise, there are two passwords agolable: that of administrator And that of power on. The former is used to block unauthorized access and changes to the BIOS but does not affect the start of the PC, while the latter completely blocks the start of the PC (e therefore access to Windows) if it is not entered correctly.


Yes, it is, in short, a much more restrictive precautionary measure than setting a password for the computer user account, as I explained to you in my guide dedicated to the subject, which can therefore only be useful in specific circumstances, for example in the case of a public or workplace computer, allowing you to restrict access to unauthorized persons and prevent them from starting the PC with an alternate operating system or installing another OS.


Preliminary operation

Having made the necessary clarifications above, I would say that we can finally get to the heart of the topic and take action. If you know the password to unlock the BIOS (or the UEFI) or to start the computer but you have decided to disable it because it bothers you to have to type it every time the PC is turned on, the first fundamental step you need to take is to enter to the BIOS or UEFI. Don't you know how to do it? Then I'll explain immediately how to fix it.


In the case of BIOS, restart the computer (or turn it on, if it is off) e, when you see the start screen appear, press the key repeatedly to access the setup, which usually corresponds to F2, F10 o Canc (You should find it indicated in one of the corners of the computer home screen, with a message like press F2 to enter setup).


In the case ofUEFIInstead, the steps to be taken to access it are those listed below, depending on the version of Windows you are using.

  • Windows 10 - click here Start button (I cheer with the windows flag) on the taskbar, select the icon Settings (Quella with l 'gear) from the menu that opens, click on the icon Update and security in the window that appears, select the item Restoration from the sidebar of the left and premi on bottone Restart now placed under the heading Avvio Avanzato. Then select the item Troubleshooting, That Advanced options e, to conclude, click on the item UEFI firmware settings. Then press the button Restart and wait for the PC to restart.
  • Windows 8.x - click here Start button (I cheer with the windows flag) located at the bottom left, type the term "Settings" in the search field you find in Start Screen and selects the icon of PC settings from the list of suggestions. In the screen that opens, select the item Update and restore from the side bar of the left, click on the button Restart now placed under the heading Avvio Avanzato e, when your computer restarts, click on the items TroubleshootingAdvanced options, UEFI firmware settings e, finally, select the wording Restart.

How to clear the BIOS password


Once you enter the BIOS or UEFI, if you are prompted for the unlock password, enter it. Then go to the card Safety using the directional arrows present on the keyboard, positioned on the voice Administrator password o Power-on password (whichever you want to disable) and press the key Submit.

In the box that appears, type the password you currently use to unlock the BIOS or PC in the field Enter current password and leave the other two fields blank (Enter new password and Confirm new password), to deactivate the protection. Then exit the BIOS saving the changes, using the appropriate key indicated at the bottom right in all the screens of the BIOS itself (usually it is F10).

Please note: some of the information I have given you in this step regarding the items to be identified in the BIOS may differ from what you see. The labels and agolable settings, in fact, are subject to variations depending on the manufacturer of the PC and the version of the BIOS in use.

Alternative solutions

If you no longer remember the BIOS or UEFI password and therefore you cannot use the related settings to disable it, the only way to perform the operation described in this guide is reset BIOS: to do it, I'll advance it to you, you need to disassemble the computer. It is not the most practical system in the world but, as they say, to extreme evils, extreme remedies.

Therefore, first disconnect the computer from the power supply and remove any cables and cables connected to it. Then, if you have a desktop PC with a case separated from the screen, access the internal components by unscrewing the screws on the central unit and removing the side panels.

If you have a laptop, however, you must disassemble the notebook following the specific instructions provided for the model in your possession: usually, first unscrew the screws below and then remove the bottom panel, but the procedure may vary depending on the laptop. 

In any case, once you open your computer, try to locate the jumper, a plastic bridge placed near the backup battery (a round shaped metal battery). Generally the jumper is blue or yellow and is positioned above two metal pins with a third contact "exposed".

Once you have found the jumper, lift the jumper by removing it from the pins on which it is placed and reinsert it, so that it covers the third pin that was previously discovered. If something is not clear to you, you can take a look on YouTube, looking for explanatory videos on what to do.

When done, press and hold the PC power button for about 10 seconds, in order to discharge the residual energy present in the capacitors of the motherboard. Then wait about half a minute, put the jumper back in its original position, reassemble the computer and turn it on: by doing so, the BIOS should finally be reset e, consequently, also its settings, so you should no longer be asked to enter the password .

In the unfortunate event that the implementation of the practices described above proves to be ineffective, you can try to clear the BIOS password by going to remove and reposition la backup battery (assuming that your PC allows you to perform the above operation), always after having disassembled the computer.

Typically, the backup battery is locked in its position by one or two small springs. If you can get it out of its housing without difficulty, it means that the battery is not soldered directly to the motherboard and is therefore removable. If you notice that it takes more force than necessary to extract the battery or in any case if you find it difficult to do so, do not insist, otherwise you could risk irreparably damaging the battery or in any case breaking its contacts. However, if that helps you, you can also look for explanatory videos on YouTube in this case.

Once the battery is removed, wait about 30 seconds to place it back in its compartment. When reassembling it, be sure to install it with the correct polarity. Next, remount your PC and turn it on again. At this point, you should no longer be prompted for the BIOS password.

In case of dubbi or problem

Have you followed my instructions on how to delete the BIOS password in detail but, at the moment, you have not yet succeeded in your intent? In the course of work, has some hitch arisen that you were unable to cope with on your own or do you have doubts about the functioning of the BIOS or the UEFI? Then I suggest you take a look at the support and assistance sections that you find on the website of your computer manufacturer.

Below, if it can help you, I have linked you to those of the main PC bres, through which you can find more information, in the form of FAQ, downloading the User Manual of your computer or by requesting direct help.

  • Acer
  • ASUS
  • Dell
  • HP
  • Lenovo
  • MSI
  • Samsung
  • Toshiba

For the sake of completeness, I also suggest you do a Google search for your exact PC model (eg. how to clear the BIOS password [PC model]) and reading some my guides dedicated to the BIOS and UEFI that maybe can help you: how to enter the BIOS, how to set the BIOS and how to reset the BIOS.



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