Password to enter the BIOS – one of the ways to protect information on PCs and laptops from unwanted access by strangers.
Without a password, if it is set, you can not only change the BIOS Setup settings, but also boot the operating system.
You will not be able to start the computer from external media.
Forgetting the password is like a disaster, because it will become impossible to use the machine. The only thing that will help you out in such a situation is its dumping, or rather, zeroing.
Reset BIOS password on PC
Resetting the BIOS password on a desktop computer is not a problem. It is reset when cleaning the CMOS flash memory – a small 32-foot PLCC chip on the motherboard that stores BIOS settings.
Cleaning is performed in many ways, but since the entrance to the BIOS Setup is closed for us, and the operating system does not boot, we consider only the hardware ones.
Attention! Before you follow these instructions, unplug your computer.
- Method 1: Temporarily remove a flash memory battery. The CMOS memory is powered by a CR2032 tablet battery (in the photo below under number 1), which is also located on the motherboard. Remove it from the slot and after 15-30 minutes put it back.
- Method 2: Clear CMOS contact closure with a special jumper – a jumper (in the photo below under number 2). These contacts are usually close to the battery and besides “Clear CMOS” can be marked as “CLRTC”, “Clear RTC”, “CLR CMOS”, “CRTC”, “CCMOS”, etc. In the working state, the jumper is in position 1-2. To clear the flash memory, rearrange it to pins 2-3, wait 30 seconds and put it back.
- Method 3: Pressing the Clr CMOS button, which on some top motherboards replaces the jumper.
After restarting the PC, the BIOS password will be reset, and the rest of the BIOS Setup settings will return to their original state.
Reset BIOS password on laptop
With laptops, things are more complicated, but there are more ways to reset the BIOS password for them. One is similar to the above, but it does not always help out. Why:
- To get to the battery or Clear CMOS jumper, you sometimes have to disassemble the laptop completely. Only on some models is the battery under a separate lid.
- The battery may be soldered to the motherboard, and the jumper may be missing.
- The BIOS password is sometimes stored in a separate EEPROM volatile memory chip, and manipulations with the battery do not lead to anything. This is usually how business-class laptops and some compact models are arranged.
If the latter is your case, you can only reset the BIOS password by flashing the EEPROM firmware on the programmer or by selecting a master password – a universal code suitable for a particular laptop brand.
The option with the programmer is clearly not for home users. Repairmen in service centers resort to it when simpler methods do not help.
At the same time, the microcircuit is soldered from the board, “poured” into it a new firmware and soldered into place.
After that, using the BIOS editor, enter the MAC address and serial numbers of the laptop into the firmware.
It turns out that the selection of the master password is the only thing that can be done at home. Different laptop manufacturers do it in their own way.
The essence of the method is as follows: after several unsuccessful attempts to enter BIOS, a certain code is issued, on the basis of which a master password is generated.
As generators, programs are used (not widely used widely) and web services.
Sometimes the technical support service of the machine manufacturer helps to solve the problem, but, much to the chagrin, some require a fee.
Consider how to get a master password on laptops of the most common brands.
Undocumented feature: resetting BIOS settings and password on some models is done by pressing the Insert key simultaneously with the power button.
In other cases, after a triple input failure, the BIOS displays the date of its installation on the screen. Each date is associated with a specific password.
To get started, try by date to find the master password on the Internet, fortunately, users are willing to share them. If it doesn’t work, use the service generator.
Three failed input attempts result in the message “System disabled [digital code]”.
The code is used to generate. Since it changes after each laptop is turned on, it is not possible to find a suitable master password on the Internet, as for Asus. Sometimes it is necessary to generate several times.
Different BIOS versions of HP and Lenovo laptops display different messages. Some are the same as Acer, others are an eight-digit numeric code, and others are a ten-digit alphanumeric.
The code is passed to the generator. Most often, a suitable option is not generated on the first try.
Try it, and sooner or later you will succeed. But it is better not to put the password on the BIOS or write it down on paper and store it in a safe place without special need.