How to reset the BIOS on a lenovo laptop
Reset BIOS on a lenovo laptop. How to reset the BIOS to factory defaults
Unfortunately in practice there are often cases when the laptop user has to reset the BIOS settings on his laptop by himself. In this article we will tell you what can help reset BIOS on a laptop, how to properly conduct it, and what the consequences may be this simple procedure, if an error.
This happens, for example, if the laptop for security purposes, refuses to start after you set too high speed CPU or graphics card. Or after you have installed an update which is not compatible with your motherboard or your BIOS version. Sometimes you forget or don’t know your login password, then you have to think again about the above procedure. There are other situations that may provoke the need to zero the bios on a laptop. For example, when it does not respond to pressing the start button. When your notebook beeps instead of loading Windows, or when it continually falls into reboot mode, hangs, etc. д. Yes, there are models that are able to reset the BIOS themselves, but if your technique is not among them, you will have to reset the BIOS on your laptop by your own efforts.
How to reset the BIOS on your laptop?
Most often this, in general, simple operation is still left to professionals. The reason is very simple. To reset the BIOS, you need to disassemble the laptop. That means you will lose your warranty. And more expensive operations will have to be performed for a fee. It is more advantageous to pay for a reset BIOS service center, the more that the price of the issue is not so great. If your notebook is already out of warranty or you decide to take a chance, let’s begin the process. Resetting the BIOS means a mechanical impact on it. 1. Before proceeding to any action, make sure that the laptop is not plugged into a socket, and it does not apply power. Then remove the battery so there is no voltage in the tech (the battery holds a charge). 2. Then remove the back cover and find the place where the motherboard is located. On it, look for the battery, which is shaped like a tablet. Take a screwdriver and pull it out of the motherboard. Wait 15 minutes and plug it back in. 3. It is possible to reset the BIOS without removing the battery. This will work if you can find a switch (a jumper shaped like a small jumper) with 2 or 3 pins next to it. If you have 2 pins, they need to be closed. If you have 3 pins, then you must turn the switch from position 1-2 to position 2-3. Keep it in this position for several seconds and put it back. Sometimes instead of the switch there is a reset button in the BIOS. It says “CMOS”.
What can cause errors if you reset BIOS on your notebook??
In some cases the BIOS and the entire computer may be suspended due to improper settings. In order to resume the entire system, you will need to reset all settings to the factory settings. Fortunately, this feature is provided in any machine by default, but the ways of resetting may differ.
In most cases, experienced PC users can get the BIOS settings back to an acceptable state without a full reset. However, sometimes you still have to do a full reset, such as in these cases:
- You have forgotten your operating system and/or BIOS password. If in the first case you can fix it by reinstalling the system or using special utilities for password recovery/resetting, in the second case you have to do a complete reset of all the settings;
- If neither the BIOS nor the OS boots correctly. It is very likely that the problem will be deeper than the incorrect settings, but it is worth trying a reset;
- Provided that you have made incorrect settings in BIOS and can not go back to the old ones.
If you have a 32-bit version of Windows, then you can use a special built-in utility, which is designed to reset the BIOS settings. However provided that the operating system starts and operates without problems.
Please refer to this step by step instruction:
This way is suitable only for 32-bit versions of Windows, moreover it is not stable, so it is recommended to use this method only in exceptional cases.
This battery is present in almost all modern motherboards. It is used for storing all the changes in BIOS. It ensures that your settings are not reset every time you turn off your computer. However, if you take it out for a while, it will reset to factory settings.
Some users may not be able to get the battery, due to the nature of the motherboard, in this case you will have to look for other ways.
Step-by-step instructions for removing the CMOS battery:
This jumper is also often found on different motherboards. To reset your BIOS using the jumper, use this step-by-step instruction:
You should also take into account the fact that the number of pins on some motherboards may vary. For example, there are examples where instead of 3 pins there are only two or 6, but this is an exception to the rule. In this case you also have to jumper the contacts, so that one or more contacts remain open. To make it easier to find the right ones, look for the following labels next to them: “CLRTC” or “CCMOST”.
a button on the motherboard
Some modern motherboards have a special button to reset the BIOS to the factory default settings. Depending on the motherboard itself and the features of the system unit, the desired button may be located both outside and inside the system.
This button may be labeled “clr CMOS.”. It may also be marked simply in red. On the system unit you have to look for this button on the back, to which various elements (monitor, keyboard, etc.) are connected.д.). After pushing it the settings will be reset.
The standard BIOS reset program
All modern personal computers, including laptops, have a factory reset BIOS/UEFI. All you need to do is to enter the user interface of the firmware, find the appropriate function and start it. This task is possible only if the BIOS failure does not affect the functionality of the laptop. at least it should boot up to the initial boot stage.
To enter the user interface you usually just press a certain hotkey right after you turn on your computer. Depending on the manufacturer and model of notebook you may press one of the function keys from “F1” to “F12” or the “Delete” key. To know which key is the key to enter the BIOS/UEFI interface, just read the message that appears at the bottom of the laptop screen when it is turned on. The message can be something like “F2: Enter Setup”, “DEL to Enter Setup”, “Press F2 to Run BIOS Setup”, etc.д It depends on the model of your notebook.
The exact way to enter the settings can be found in the laptop’s documentation, which can be downloaded from the manufacturer’s official website.
Run the reset function
All you need to do at this point is to find the section where the reset function is located and activate it. There are many options. it all depends on your particular version of BIOS/UEFI. For example in the case of the image below, the Load Optimized Defaults function is located directly in the main user interface.
And in this version of the BIOS to reset the settings you must first go to the “Exit” section, and then activate the “Load Optimal Defaults” function.
Note that not only can the reset function be located in different sections of the user interface, but it can also have different names.
Unlike the BIOS, the more modern UEFI firmware has a graphical interface, somewhat like a normal website or any program. But in any case, the resetting algorithm is the same. For instance in the image below you can see the UEFI interface of “MSI Z971” motherboards. The reset function is located in the “Save Exit” subsection, which can be accessed from the main “Setting” section. The function itself is called “Restore Defaults”.
Many versions of the UEFI firmware have interfaces in Russian. In that case it will not be a problem to find the right reset function.
The second way to reset the BIOS in your laptop is with the jumper
The second way is to reset the jumper, which is close to the aforementioned battery.
The jumper is described as “CLEAR CMOS”, “CLR CMOS” or “RESET BIOS” depending on the motherboard installed in your computer. The look of the jumper also depends on the laptop model.
By default it closes two pins. the first and the second. To reset BIOS you need to short circuit the second and third pins, wait a few seconds and move everything back to its original position.
If you do not have a jumper can be used a regular screwdriver holding it in this position for several to ten seconds (the longer the better).
How to reset the BIOS to the factory settings on your laptop
Many problems on your laptop can be solved by resetting the bios to the factory settings (sometimes, also called optimal or safe settings).
Generally, it is pretty easy, more difficult will be if you put a password on the BIOS and a laptop when you turn on it will ask for the same password. Here already without disassembly of the laptop can’t be done.
In this article I would like to discuss both options.
Resetting the laptop bios to the factory default settings
To enter the BIOS setup you normally use the F2 or Delete key (or sometimes the F10 key). It depends on the model of your notebook.
To learn which button to press is easy enough: restart the laptop (or turn it on) and look at the first “Welcome” window (it always shows the button to enter the BIOS settings). It is also possible to use the documentation, which came with the laptop when purchasing.
So, let’s assume you are already in the BIOS setup. Next we are interested in the tab Exit. By the way, laptops of different brands (Asus, ACER, HP, Samsung, LENOVO) have almost the same name for the sections of the Bios, so there is no sense to make screenshots of each model.
BIOS setup on your ACER Packard Bell notebook.
Then in the Exit section select “Load Setup Defaults” line (t.е. boot to default settings (or defaults)). Then in the popup window will need to confirm that you want to reset.
The only thing left to do is to exit BIOS and save the settings you made: choose Exit Saving Changes (first line, see “Exit Saving Changes”). screenshot below).
Load Setup Defaults. Load default settings. ACER Packard Bell.
By the way, in 99% of cases with the reset settings notebook will normally boot. But sometimes a small error can happen and your notebook can’t find where to boot from.е. from which device: flash drive, HDD, etc.).
To fix it enter BIOS again and go to the Boot.
Here you need to change the Boot Mode : Change UEFI to Legacy. Then exit the BioS and save your settings. After rebooting. the laptop should normally boot from the hard drive.
How to reset BIOS settings if it asks for password?
Now imagine a more serious situation: it so happened that you have set a password on the BIOS, and now you have forgotten it (well, or sister, brother, friend set the password and calls you for help).
Switch on your notebook (in this example, a notebook from the company ACER) and see the following.
ACER. BIOS is asking for a password to work with the laptop.
On all attempts of the search. the laptop answers by an error, and after a few incorrectly entered passwords simply shuts down.
In this case can not do without removing the back cover.
- Disconnect the notebook from all devices and remove all cables connected to it (headphones, power cord, mouse, etc.);. Remove the cover protecting the operating system and the notebook.);
- Remove the battery;
- Remove the lid that protects the RAM and hard disk drive (all notebooks have a different design; sometimes you may need to remove the entire back cover).
Upside down laptop on the table. It is necessary to remove: the battery, the cover from the HDD and RAM.
Next, remove the battery, hard disk and RAM. The notebook should look something like the picture below.
The notebook without the battery, hard disk and RAM.
Under plaques of RAM is two pins (they are also signed JCMOS). they that to us also are necessary. Now do the following:
- Close these contacts with a screwdriver (and do not disconnect until you turn off the notebook. Here you need patience and care);
- Connect the power cord to the laptop;
- Turn the laptop on and wait for about sec. 20-30;
- Turn off a notebook.
Now you can connect the RAM, the hard disk and the battery.
the pins you need to short circuit to reset the BIOS. These pins are usually labeled with the word CMOS.
Next, you can easily enter the laptop BIOS by pressing F2 when you turn on the laptop (BIOS has been reset to factory defaults).
Mechanical (hardware) method of resetting BIOS
This “hard” reset BIOS is needed for notebook computers that have forgotten the BIOS password, when the BIOS is unknown, or in any other case where the BIOS is inaccessible.The only way out is a hardware BIOS reset.
Notebooks produced 2-3 years ago have this button in a prominent place, so that you do not have to disassemble the device. To reset the bios using the button you need:1. Disconnect the notebook completely, turn it upside down;2. Find the “CMOS” inscription at the bottom, near it there will be a special hole through which you can reset the BIOS;3. In the found hole insert a suitable object such as a “paper clip” or “nail” to hold the button for 30 seconds or more;4. Turn on your notebook.
In case there is no hole, you need to disassemble it and find the button.Remove all power cords and other peripherals, including the battery, before disassembling the laptop.
Removing the “battery” on the motherboardThis is the easiest way to “hard reset” the bios. Most laptops allow you to reset just removing the battery highlighted in the picture below.
By removing the battery, you turn off the power of the BIOS and, accordingly, reset all the settings and the password itself. The board must be powered down for 5 to 40 minutes, it all depends on the model. Sometimes this might not work.
The battery is always in a prominent place and located closer to the edge of the motherboard, so there is nothing to obstruct its removal.The user should:- remove the lid;- completely disconnect the devices, take out the laptop’s battery;- find the battery;- remove it carefully;- wait up to 40 minutes for this to work;- place the removable battery back on;- turn on the notebook;- set the BIOS again, set the date, clock and other settings.Nowadays there are also non-removable batteries. This method is not possible for them. Therefore the following method can be used.
This method of switching the jumper is possible if your laptop has a special jumper, which is responsible for resetting BIOS.In order to find it you need to “get” under the notebook lid and get access to the motherboard. Most often, such a switch is located directly next to the battery, and the jumper is signed with one of the following names: CLRTC, CLR and CCMOS.
Most often the Jumper pad consists of three pins. To reset the BIOS, you must move this jumper in steps, that is, from a certain position to the next, and vice versa.
After the jumper is switched, you should press the power button on the laptop for more than 10 seconds.The notebook, of course, will not be turned on, but the signal will be transmitted to the jumper. After that, return the jumper back to the position in which it was and go to turn on the laptop and set the reset BIOS.
The hardware method of resetting BIOS settings, almost 100% will reset them, but in the case if the laptop is still under warranty. this action will lead to the loss of warranty on it, so apply the hardware method is better to the expiration of the warranty.
Ways of resetting BIOS/UEFI to factory settings
Using the BIOS itself (Load Defaults) menu
The easiest and fastest way to reset BIOS settings is to use the special menu in the settings, usually called “Load Defaults”.
This menu is absolutely in all versions of BIOS, most often in the Exit section. Let’s look at how to do it in steps.
First you must enter BIOS
Usually the button to enter BIOS menu is written when you turn on your computer/laptop (try to reboot your computer to see the first welcome screen).
Most often it is a button from among F2, F10, Esc, Del (99% of devices support these keys).
Press Del to run SETUP / an example of the welcome screen (the Del key. to enter BIOS)
1) You may find my article about the buttons to enter the BIOS and Boot Menu from different PC and notebook manufacturers helpful.
2) Instructions on how to enter the BIOS.
By the way!
The buttons to enter the BIOS settings are usually always included in the documentation that came with your PC.
One more thing! In some laptop models (particularly Lenovo). There is a special button on the case to enter the BIOS. Read more about it here.
Lenovo B70. BIOS button next to the power input. A pencil or pen is the easiest way to press
Loading safe settings (default/factory settings)
Generally, it is impossible to give universal settings, where in which version of the BIOS the correct tab for resetting is located!
But in most cases (99%) you find it either on the first screen (the main one you see immediately after login). or in the Exit section.
For example, in the screenshot below shows the Award BIOS (one of the most popular). which has two tabs for resetting BIOS settings: Load Optimized Defaults. Load Fail-Safe Defaults. You can use any of the following.
By the way! After you reset it, don’t forget to save your settings. the F10 button.
Here is a picture of a great version of BIOS. here the tab “Load Defaults BIOS” is in the Exit section. After resetting it is necessary to save the changes by clicking on “Save Changes and Exit”.
In Phoenix (Award BIOS) laptops the reset link is “Load Setup Defaults” (laptops Acer, Dell, etc.).). and is located under Exit.
On some Dell laptops the link you need may be called “Restore Defaults”.е. to the default settings ☝).
In most cases this is the way you can quickly and easily reset the BIOS.
However, in some cases this method won’t work (most often when you have a password to modify BIOS settings, and you forgot or don’t know it). In this case, go to the second part of the article.
Many notebook PC users encounter the problem that the device does not boot after resetting it (most often they get an error message like “Operating System Not Found”).
The reason is that the Boot Mode was changed from Legacy to UEFI. To fix this, you need to change the BIOS settings from UEFI to Legacy, and disable Fast Boot (usually done in the BOOT (boot settings) section).
An example is shown in the screenshot below: left (was after resetting), right (became after tuning).
Using the jumper on the motherboard
An example for notebooks will be shown at the bottom of this article.
Almost every PC motherboard has special jumpers for resetting BIOS settings. A jumper located near the battery which powers the CMOS memory.
Normally, by default, it is in 1-2 mode. To reset. place the jumper in 2-3 mode for a couple of minutes (see “Reset Settings”). Picture below).
Important! This operation must be done with the computer completely turned off (also disconnect all plugs and sockets from the system unit). wires and plugs)!
Note: The jumper may have different names. For example, CLRMOS1 (as pictured below), CLRTC, Clear CMOS, CCMOS, Clear RTC, CRTC.
The picture shows the jumper used to reset the BIOS.
If there is no jumper
Some motherboards might not have a jumper at all. But then there is usually either a special reset button (called CLR CMOS). or there are two special. The contacts that need to be closed with a screwdriver (or any other metal conductor; they are near the Clear CMOS inscription).
Important! Close the pins or press the CLR CMOS button with the PC turned off completely (and the cord unplugged from the socket)!
The picture shows what the CLR CMOS button looks like on the mat. PC board
If you have documentation of your PC/laptop. it almost always contains this information (look for BIOS Setup reset section). Perhaps only cheap Chinese devices may not have this information.
With the battery on the motherboard. the board
When we were talking about the jumper above I told you, that it is easier to find with the help of the battery. It looks like a coin, only about 2-3 times thicker. You can usually see the word “battery” on the side of the motherboard.
It is usually bright and shimmering and when you look at the motherboard from above it catches your eye (see the sidebar). photo below ).
The hardware method
The hardware method of resetting the laptop BIOS is required when the password is unknown, forgotten or when the user did not set any protection, but the BIOS is still protected.
Finding a password and using special utilities on the boot disk does not help. The only way out is a hardware reset.
Button for BIOS zeroing
Laptop models released in the last 2-3 years provide an opportunity to disassemble the device. To reset the BIOS, just follow these steps:
- Turn the notebook off and turn it upside down;
- Check the bottom for the CMOS inscription on the case near which there may be a special hole to zero the BIOS;
- Insert a sharp object like a paper clip or nail into the hole and hold it for half a minute;
- Turn on your notebook.
If no holes are found in the back of the notebook it should be disassembled.
Warning! Further instructions are for advanced PC users only!
Please note that removing the cover and disassembling the computer leads to a loss of warranty.
Before disassembly be sure to remove peripherals (unplug the power cord if the computer is on charge, remove flash drives and cables connecting to other equipment) and the battery.
Disconnect the battery
One of the easiest hardware reset methods is to disconnect the off-line power supply on the motherboard. Most laptops store the BIOS settings and current time in the memory, which depends on a small CR2032 battery.
Removing the battery disables the BIOS power and resets all settings, including the password. It will take from 5 to 40 minutes to de-energize the board, depending on the model. Sometimes the device may be non-volatile, and there will be no reset.
the battery is easy to reach, as it is usually located close to one side of the board and is not covered by other components.
- remove the cover;
- de-energize the device by removing the battery;
- find the miniature power supply;
- Press lightly on the latch and remove the battery;
- wait for some time (in order not to repeat the procedure, it is better to wait at least 40 minutes);
- Reinstall the battery by applying the same gentle pressure;
- turn on your notebook;
- Re-set the BIOS, setting the clock, date and boot order.
Some boards have a built-in, non-removable battery. For these it is not possible to remove the battery, so you have to go to the last method.
Switching the purge jumper
The method of switching the jumper is based on the special jumper in the laptop which is responsible for resetting BIOS.
To find it, you have to remove the lid of the portable computer and open the access to the board. In most cases the switch is located near the battery and the jumper is usually labeled CLRTC, CLR and CCMOS.
The jumper pad almost always consists of three pins. To reset the BIOS, you must move the jumper one step: from the first to the second position or from the second to the third position.
While the jumper is in the switched position, press and hold the power button for at least 10 seconds.
Naturally, when the power is off, the notebook will not turn on, but the signal will be sent to the jumper. After that the jumper is returned to its original position, the computer is assembled and the BIOS is reset.
Tip: Instead of a jumper on the laptop can be a special button, pressing which allows you to perform the same action. Press with a pencil or a pen and wait for the same 10 seconds.
Using any hardware method, from removing the battery to switching the jumper, although virtually 100% reset, can lead to a loss of warranty on a new laptop, so they should be used only after the warranty period.
How to reset the BIOS to default on any laptop or netbook.
In this video I will show you how to reset or restore the factory settings of any laptops and no PCs.
I will show you an example of Lenovo G570, but it’s also applicable to other models of notebooks:
Asus, Acer, Hewlett-Packard, Samsung, Lenova, Sony Vaio, RoverBook, Fujitsu, Dell, Toshiba, Packard Bell, DNS.
Reset or restore the factory BIOS settings is its reset to default or default settings.
To reset the first thing we need to enter the BIOS of our beech.
Each notebook may use different keys.
I list the most common keys to enter the beech BIOS.
They are needed when you start the notebook, on many laptops it is written at the bottom of the boot that you must press to enter the BIOS.
Once we are in the BIOS of your laptop, we must go to the tab EXIT.
Reset is done through the tab bios EXIT.
There we start with the lock set defaults to load the default bios.
In English it will look like this: Load Default Settings or Load Setup Default.
It’s different on different laptops, but the words lowd and default should be present.
We need to stand on this inscription and press Enter twice.
The first press will ask if we want to load the factory default bios settings.
Choose Yes (usually it is immediately highlighted) and press enter again.
After that the bios settings are loaded with the defaults that come from the factory.
But now we need to save these settings in our bios ROM memory.
To do this, select the item labeled Save (save) if you want to save and stay in the bios.
If you want to save and exit, then highlight Save and Exit Changes and press inter.
Sometimes after loading the factory bios, the beech refuses to boot and writes that the device is not found.
Then you must enter BIOS again and configure the BOOT menu, specifying the boot device or hard drive.
Reset BIOS password is easy and affordable
Any master knows that sometimes part of the problems with incorrect booting or operation of the computer, as well as its devices can be solved by a simple reset BIOS. In principle, there is nothing complicated about it, but it happens to face a situation where the BIOS password is set. You say “ask the master password”, and the master of the laptop or computer sometimes forgets the password. It happens so that not only can not remember the password, but also did not put it at all can not remember where the password.Situations can be different, to solve the problem sometimes you can yourself without resorting to.
Let’s analyze the situations according to their complexity, starting with the simplest one
Reset BIOS settings. At startup the computer (laptop) press the key to enter BIOS, usually it is Del or F2 (there are also other keys to enter BIOS). Find option Load setup defaults, in the newer models Optimized Defaults or Setup Defaults depending on the manufacturer the spelling may be different, the meaning of this inscription is always the same. to reset the default settings to the factory settings, as evidenced by the word Defaults.
After the resetting it is necessary to set the time and date, and if you want other settings
And now more complicated and more interesting, if you have a password for BIOS, (password unknown) must first reset the password.
Reset BIOS password on the system unit.
If you have a system unit you can reset the BIOS password in several ways, without resorting to.
The most common way that most users resort to is to disconnect the mainboard power supply to your system unit. Many motherboards store the settings and time in memory, which is saved by a normal CR2032 type battery.
Simply remove the battery for a few minutes.
There is a reset method by switching the purge sweater which is usually located near the battery. It is usually labeled CLR CMOS or CCMOS. You must remove the jumper by one step, as shown in the picture.
By rearrange the jumper (el.power must be turned off beforehand) press the power button and hold it for a few seconds, up to about 10 seconds, of course the computer will not turn on, but the reset signal will be transmitted.
The newer models use a button labeled CCMOS or something similar rather than a jumper. Follow the same procedure as with the jumper.
Basically these ways of resetting BIOS password are mostly used in laptops.
Some laptops also have a battery on the board, but it’s not easy to get to it, you have to disassemble your laptop. If you are not confident in your abilities please contact a service center.
You can use the DEBUG utility
Boot up from the installation media and start the command line. (How to run the command line is described at the beginning of this article).
After entering each value press Enter.
Then reboot and you will be told by the system that you need to set the settings, or give an error stating that the BIOS settings are not correct, the settings were reset to default (factory default).
Some laptops have a hole on the bottom lid labeled “Reset BIOS”. Insert a thin wire or paper clip into the hole and press the button.
Keep in mind that not all laptops can reset BIOS listed above methods, sometimes you need a master key from the manufacturer for resetting, or a special code. Don’t hurry to buy such a code on the Internet, it might not work or you might just get charged for air.
Go to a specialized service center. there resetting procedure will not take long and you will get a guaranteed result.
Keep in mind that some of the above actions may void your warranty on your computer. If you still have a warranty it is better to contact a service center.