How to reset the BIOS settings (password reset) on a laptop and PC

User question


Tell me, I ran into a problem. In general, I wanted to reinstall Windows, went into the BIOS settings, changed them. And now my computer is loading: I can neither install a new system, nor the old load.

How to return the settings in BIOS to factory, how to drop them now?

Such a question is not uncommon, quite often not experienced users, changing any parameters in BIOS face the “problematic” PC work, and the need to return everything to their previous state.

In some cases, reset the settings to the factory is quite simple, in others (when, for example, a password for input in BIOS/UEFI is installed). it is very difficult to do this!

In this article I will try to consider several typical cases to solve such a problem.

In general, to discard the BIOS settings, most often, in cases:

  • If the computer has ceased to work stably, and the nature of the cause is not clear;
  • If you cannot enter the BIOS, as he asks to enter the password of the super-administrator;
  • if Windows OS is not loaded (often it happens after setting up the boot line);
  • If you are engaged in the overclocking of the processor, and you want to return the frequencies to optimal and safe.

Types of nutrition elements BIOS and their appearance

As a rule, a lithium nutrition element with a diameter of 2 cm with a voltage of 3 V is used as a bios battery. Its thickness can be different, and, as a result, can have a different container.

To date, the most common batteries of three types are:

The first pair of numbers in the battery index denotes its diameter in mm (20), and the second thickness of 0.1 mm (respectively 1.6; 2.5; and 3.2 mm). The type of any battery is written on its front side in the lower line.

If the battery for bios in the computer is discharged, and the user does not have time to replace it in time, then this usually does not have fatal consequences for the computer. The computer as a whole will not cease to be efficient from the reset of the CMOS memory of the BIOS, but the user’s headache can be added. Firstly, BIOS user settings will be lost, and you will have to restore them manually. Resetting systematic time may affect the performance of many programs. In addition, the user will receive annoying messages every time when loading, for example, about the error of the control amount of the CMOS memory.

Where is the battery on the motherboard

The location of the nutrition element on the motherboard can vary depending on the manufacturer of the device. But it is almost always easy to visually determine-it is a circular lithium tablet with a diameter of 2 cm, located in a groove-hut, near the CMOS chip.

On some boards, this nutritional element may have a not completely standard fastening form: for example, a plastic closed container where it is simply inserted or completely soldered to the board. But in some models of laptops it can be very difficult to get to an ordinary user, since it requires a complete disassembly of the device to detect it.

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When you need a replacement

If at least one of the problems is found, it is recommended to replace the battery. To do this, dismantle the back cover of the laptop.

How much does it cost to replace the BIOS battery in a laptop

How much will it cost to change the BIOS battery in the laptop ?

bios, battery, laptop
Laptop diagnosis For free
Departure of a master at home or office For free
Warranty repair of the laptop For free
BIOS battery replacement in a partial disassembly laptop 350
BIOS battery replacement in a laptop with full disassembly from 850
CMOS battery cost 50-180
Component repair of the motherboard from 850
Replacing BGA microcircuits, video chip drill from 1750
Repair/replacement of multicontroller from 1250
Replacing capacitors in a laptop from 550
Replacing resistors and others. elements of the motherboard from 550
Replacing the North Bridge from 1750
Replacing the South Bridge from 1750
Flashing BIOS (BIOS) with a microcircuit licking from 1750
Replacing connectors on the motherboard from 550
Replacing the motherboard with a new from 750
Laptop repair after filling from 950
Cleaning laptop from dust with a replacement of thermal paste from 750

Work are indicated without the cost of spare parts. Diagnosis is free only during work.

bios, battery, laptop

Free warranty maintenance is carried out only during the warranty period from our service center.

When ordering services from the site, a 10% discount applies

Several options for entering BIOS on HP

1) if you are with a relatively new device (~ release after 2013.)

If your laptop is new, then when you turn on any loading screen, it will not show (. : on old devices after turning on, the download screen with the keyboards for entering BIOS was shown).

Whether it likes it or not, but now such a trend of manufacturers (in t.h. and hp): How to download Windows as soon as possible and present the opportunity to go to work with the OS (and, as a rule, because of this it is not possible to go to BIOS/UEFI).

Therefore, immediately after pressing the power button. Press the ESC key sequentially (several times!). The system menu should appear (as in the photo below) with several options (approx. : for entering BIOS. You need to click F10):

  • F1. viewing system information;
  • F2. diagnostics;
  • F9. viewing the boot menu;
  • F10. Entrance to the BIOS/UEFI settings (what we need!);
  • Enter. Continue loading (Windows).

System menu on the HP laptop (called on the ESC key)

If you do not have time to press the ESC button before loading Windows, then you can clamp the ESC button before turning on the laptop (and keep it until the system menu does not appear).

By the way, also on some models of laptops you can immediately press the F10 key (t.e. Enter BIOS without an intermediary in the form of a system menu).

2) if your laptop is already enough old.

In this case, immediately after turning on, you should display the download screen (on it, most often, the BIOS settings button is indicated). Below the photo shows a couple of options (in one case, the F10 key is used to enter. In another ESC).

Note! I also note that on laptops released until about 2008., The Delete button can be used to enter BIOS.

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3) if you have Windows 10/11.

In this case, you can enter the BIOS without pressing any system buttons at all (though the method is suitable if the system is loaded and you can open its parameters).

So, first open the Start menu and move into the parameters of the system (see. screenshot below).

Then we open the section “Update and safety”. tab “Restoration”. It should have the “Reload now” button (see. special boot options).

Next, your laptop will be rebooted, in the menu that appears, select the “Diagnostics” option. After the “ software”. Actually, here you are in the BIOS/UEFI settings (see. screenshots below).

F1, Delete, F11. Pay attention to these buttons also. Some devices (mainly old ones) support only these keys for entering BIOS (when pressed on ESC. nothing will happen on these laptops).

Specification. Pay attention to the documents (unless, of course, they are preserved) that went along with the purchase of a laptop. Almost always such information is indicated in them.

Connect the device to the network. The fact is that some laptops do not allow you to enter the BIOS when working on the battery (I don’t know if it is done specifically, or “glitch”. ).

To help!

I also recommend that I familiarize myself with a large article with the tables for entering BIOS on the mustache of different manufacturers.

What is BIOS

BIOS. a set of micro.oprams that implement the operating system software integer for working with computer equipment and devices connected to it. In simple language, this is a means of basic setting up the operating system and components. BIOS is sewn in the motherboard and is not part of the operating system. Therefore, you can always go into it. And the entrance occurs until the OS itself.

The most common method of using BIOS is the reinstalling of the operating system, when you need to choose a priority medium from which the load will occur. However, the functionality of the base system of input and output is huge and every year there are more and more. Current bios can do much more than their predecessors. Here is a list of the most common functions that are in any, even the simplest set of micro.programs:

  • Installation of a priority carrier from which load will be made. We wrote about this a little higher.
  • Setting up of the processor and cooler. Acceleration of the CPU, in contrast to the dispersal of the video card, is carried out in the bios. And this is done by adjusting such parameters as: voltage, tire frequency, multiplier and others. In modern maternity, you can set up coolers depending on temperature, building a kind of schedule. Separately, about the topic of overclocking, you can read here.
  • Time, date and time zone control.
  • Regulate security parameters, for example, install a password.
  • Monitor the main indicators of components. This is very useful because many programs display inaccurate value. While reliable information is always shown in the bios. Provided that the latest firmware is installed, of course.

And this is far from the whole list, but a set of the most popular and necessary tools. If desired, you can always find tutorials on the content of a specifically of your set of micropramers of the motherboard.

What is the BIOS battery for the motherboard for?

The battery is required to power the CMOS memory chip, which contains BIOS settings (the main configurations of your PC).

laptop CMOS battery replacement (Jugaad)

Its functions also include maintaining the operability of the watch on PC, which is why they do not lag behind when the computer is turned off from the network.

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The Simple way to Replace BIOS Battery HP G62 Series Laptop

4 Signs of the sowing battery on the motherboard

We think that we will not surprise you, saying that the battery will sooner or later sit down. Then the signs that we describe below are manifested. If you notice them at the work of PC, be sure to start replacing the battery!

bios, battery, laptop

So, 4 signs indicating the sowing battery on the motherboard:

  • Constantly straying hours on a personal computer. They can lag behind ordinary hours or freeze at the time of turning off PC;
  • The browser on various sites may issue a notice of outdated security certificates;
  • Antivirus (if you have bought a paid version), can report an outdated license, because the time on the computer does not correspond to its validity period;
  • Some programs will not work correctly.

There is also the following sign of the sowing battery. immediately after the BIOS testing you will see a characteristic message, and the further loading of the system will not occur.

bios, battery, laptop

The inscription will look as follows: “Press F1 to Cmos Setup”. This arises due to the fact that the BIOS configuration returns to the original, because turning off the PC leads to a reset of settings.

Inscriptions can be others. However, they all talk about the category of battery. You can independently check the voltage, it will be significantly lower.

What battery is needed for the motherboard

There are several main types of batteries that differ both in size and technical characteristics, so it is important to choose the right one for your motherboard when buying.

Despite the manufacturer, the marking on all batteries is the same. The first two letters found in the designation determine the composition of the nutritional element. There are 4 main types:

4 digits follow the letters. The first of them indicate the diameter. The most common option is 20 mm. Regardless of the diameter, all batteries have the shape of a circle. The second two digits indicate the thickness of the element measured in millimeters. For example, the abbreviation “CR2032” means that the device is based on lithium elements, the diameter of the device is 20 mm, and the thickness is 3.2 mm. For stationary computers, batteries with CR elements are used. There are other types of mechanisms in which you can find such batteries. For example, in scales, car facies and wristwatch.

By the way, the thickness of the battery displays its container, and accordingly affects the time of production. The largest nutrition elements (3.2 mm) on average last about 5 years. Accordingly, if you could not find the battery of the format you need, you can purchase a reduced version. The main condition is the same voltage.

  • CR2032 has a diameter. 20 mm, thickness. 3.2 mm, capacity. 210–230 mAh;
  • CR2025 has a diameter. 20 mm, thickness. 2.5 mm, capacity. 150 mAh;
  • CR2016 has a diameter. 20 mm, thickness. 1.6 mm, capacity. 75–90 mAh.