If your computer is already several years old, then sooner or later there will be a need for replacing the battery on the motherboard. The first sign that it's time to replace the battery is every time you turn it on. computer time is reset at 0:00. Agree, this phenomenon is difficult not to notice and constantly letting down the clock on the computer is annoying.And this is not good for the BIOS, because every time the computer is booted, its settings are created anew, since due to a discharged battery, the BIOS chip cannot store them while the computer is turned off.
So, if you observe this symptom, then take a pencil and write down the type of battery you need to buy before you remove it from motherboard your computer is old.
Then we take a screwdriver, but we’re not in a hurry to poke it anywhere! First of all - UNLOCK THE POWER CORD FROM THE COMPUTER! This reminder is highlighted in bold for the most armored ones. I hope no one was offended, because the instructions are written in blood - a joke. We put the computer on its right side, go in from behind and then use a screwdriver. Remove the two screws holding the side panel.
And slide it towards you.
The entire insides of your electronic computing friend will appear before your eyes. The largest internal component of the system unit is motherboard. The picture below shows the exact location battery on the board. Naturally, there are a great variety of motherboard models and the location of the battery may differ slightly.
Now you need to pry the battery with something sharp and pull it out of the board.
And now, nothing prevents us from inserting a fresh battery to replace the old one with an expired resource. It is important to maintain polarity - install the battery with the inscriptions facing up.
Close the computer, connect the power and start it. It is possible that the BIOS will ask you to load the settings when you first start it. Press F1 - load defaults. Once the system boots, set the correct time. To check whether the problem with the hardware regarding replacing the battery on the motherboard has been resolved, reboot the computer. After a reboot, the time should be preserved. If computer time after all reset, then things are already much worse with yours motherboard and perhaps in the near future it will fail altogether and it will have to be changed. But these are lyrics, hope for the best! Good luck!
Even an inexperienced PC user can cope with replacing the battery on a computer motherboard. There is nothing complicated about this. You just need to follow the instructions and be careful. You also need to choose a battery for your motherboard. they differ in thickness.
There can be 3 types of batteries in a computer, they differ only in thickness.
- CR2032 (Is standard. Thickness 3.1 mm);
- CR2025 (Thickness 2.4mm);
- CR2016 (Thickness 1.6mm).
To find out what kind of battery you have, you need to take it out and look at what is written on it and buy the same one. Of course, you can install another one, but then it will hardly fit into the socket and there is a chance of breaking the holder or it will dangle and can disrupt the operation of the system. Therefore, it is better to install the same one that was installed.
Finding the battery socket can usually be found on the lower right side of the motherboard. It is difficult not to find batteries, since such elements are no longer on the motherboard. And she looks like this:
The first thing you need to do is turn off the computer and completely disconnect it from the outlet.
To remove the battery, take tweezers, scissors, and a screwdriver and pry it off. Be careful not to let the tool jump off and damage the motherboard. Some motherboards have a special foot that, when pressed, will cause the battery to pop out of its socket.
After replacing the battery, the first time you turn on the computer, your BIOS settings, date and time will be reset. Most likely you will see the following error on your monitor screen: CMOS checksum error — Defaults loaded
You will be asked to choose whether to go to the BIOS settings or apply the default settings using the F1, F2, DELETE keys. By pressing F1 you will continue working with the default settings.
To remove the battery from the motherboard, you need to press on a special metal leg that holds the battery in the socket. Take out the battery if you need to reset it BIOS settings or replace it.
It's hard to imagine, but such a battery can affect the operation of the entire system. When the battery on the motherboard runs out, the computer begins to glitch, slow down, and then may not turn on at all. To avoid this situation, you need to know the signs of a dead battery on the motherboard and replace it as soon as possible.
1.The most common symptom and the easiest to identify is a time and date failure. The BIOS is responsible for the time and date; it is actually powered by this battery when the computer is turned off. If the battery is low, the time and date are reset, which means the battery needs to be replaced.
2. The second sign is that when you turn on the computer you see the inscription CMOS checksum error. This means that your BIOS settings have been reset. If you have not done this, then the battery is already running low and needs to be replaced with a new one.
3. The next sign is that the computer begins to slow down, randomly reboot or turn off.
4.Some motherboards have a battery charge sensor. If the battery is low, you will hear a squeaking sound when turned on. If before when turning on there was no extraneous sounds, and appeared recently, that is, there is a possibility that the battery is dead.
5.And the last sign is when the computer does not respond to the power button. This can happen if you ignore the above signs. Another option was that the computer was not turned on for several years, but this option is unlikely.
It is worth paying attention to points 3 and 5. Such signs may occur for other reasons, but the check should begin with the replacement of the battery.
What is the battery voltage on the motherboard?
The battery voltage on the motherboard is 3V. You can check the voltage with a multimeter or voltmeter. To do this, you need to remove the battery from the computer, first turning off and de-energizing the computer. If the voltage is much less than 3V, then such a battery should be replaced.
In this case, it makes no difference who the battery manufacturer is, they all work the same. They will last from 2 to 5 years. It’s just that some users are calmer and they think that a battery for 500 rubles will work better than one for 50 rubles. But it is in this case that price does not play any role. There's no point in overpaying. On the Internet, prices vary from 30 rubles to 500. Personally, I bought for myself for 30 rubles.
and just familiar personalities!!! In this post we will talk about the battery on the motherboard. Why is it needed? Quite a popular question, isn't it? But many people don’t even realize that there may be a battery in the computer system unit, on the motherboard. Really, why is she there? The answer is simple.
There are two things in a computer that require constant power. This is a built-in timer (one of whose tasks is to show the correct time on the computer) and a CMOS memory chip in which the configuration is stored
To supply them with constant power (even when the computer is unplugged) use regular battery type CR2032. They are also called “tablets”.
This battery will last for 5 years, or even more. But if the battery is dead, it needs to be replaced. The computer will work with a low battery, but this will cause you some inconvenience.
The main symptoms of a low battery:
a) When you started your computer, you saw the message “CMOS battery failed”;
b) Your day of the week and time on your computer are constantly lost;
The battery can be purchased at any industrial or computer store. Do not go into details, many sellers are not very competent in such matters and may not understand you. Especially if it is not a computer store, but a regular store. Just say that you need a CR2032 coin cell battery.
Battery on the motherboard. Description. Purpose.
Many users have heard at least once, and many have opened and changed settings in Computer BIOS. However, not everyone understands the difference between BIOS and CMOS. In simple words, BIOS (Basic Input/Output System) is shell, which allows the user to see the status of their computer and change some hardware settings (for example, set the disk from which the system should boot). Even simpler, BIOS is a program. What is CMOS?
“Smos” is a memory that stores all the settings and parameters set in the BIOS. Physically, CMOS is a set of chips on the motherboard. However, CMOS memory, unlike, for example, hard disk memory, is volatile. This means that it constantly needs an electrical power source. Otherwise, all parameters set in it are reset (including the computer’s system time). A small flat battery on the motherboard serves as such a power source (look at the photo).
CMOS battery specifications:
- size: 20mm in diameter; 3.2mm - thickness
- Rated voltage: 3V (Volt)
- marking by international standard:CR2032
- American marking: 5004LC
- battery type: lithium
When and why to change the battery
In general, lithium batteries, which include CR2032, are considered the most durable. In addition, batteries of this type are resistant to temperature changes, which is especially important for modern computers. The shelf life of such a battery in its original packaging can reach 20 years. And if you print it, it will serve as good as new.
Depending on the manufacturer (and, accordingly, on the quality of the element), the battery can last about 10 years. However, experts recommend: The battery on the computer motherboard must be replaced at least every 5 years. This is necessary for stable operation of the computer. After all, the battery loses its capacity and other properties during operation. Over time, the voltage may become unstable, which will certainly affect the operation of the entire system. This may happen sooner or later.
So how do you know when it’s time to change the battery on the motherboard?
- 5 years have passed since the purchase of the computer - definitely change it
- The computer starts to boot slowly, it takes a very long time to detect devices at the initial boot stage - it’s worth thinking about, maybe the battery is already running low
- When I turn on the computer, it doesn't work Windows boot, BIOS displays a message about the need to replace the battery - listen and change
- Every time you turn on the computer, the system time is reset - change it immediately
- When carrying out preventive maintenance on a system unit or laptop, if you suspect that the battery is dead (or after 5 years of operation), it makes sense to remove it and measure the voltage with a multimeter. The voltage should be 3V. However, a deviation of +/-10% from the nominal value is considered normal, that is, from 3.3V to 2.7V. If the voltage is lower, then we definitely change it.
Procedure for replacing the battery on the motherboard
- First of all, you need to shut down the computer and turn off the power, remove the battery from the laptop.
- Then you need to open the system unit or laptop case. WITH system unit There are no difficulties - you just need to remove the left cover and the whole computer will be at your fingertips. With laptops everything is much more complicated. Some models have a special cover on the bottom wall for quick access to the main nodes (hard drive, random access memory and so on). In this case there is no need to open the case. But there are laptops in which, in order to “get” to the battery, you have to disassemble the entire case. It all depends on the model.
- Next, visually locate the battery on the motherboard. In most cases, it is located in an open plastic cell on the board. To pull it out, you need to carefully loosen the lock and pry it off with a screwdriver. There are options for attaching the battery in a closed plastic pocket. It can be positioned both vertically and horizontally. In this case, the battery is usually removed by pressing a special lever on the side of the pocket.
- Insert a new battery. When positioned horizontally in a cell or pocket (flat to the board), the battery is always installed with the marking (plus) facing up. When mounting vertically (edge to the board), you need to remember how the previous one was located or look at the designation on the board itself.
Battery on the motherboard
USEFUL:
Note. Please note that when replacing the battery on the motherboard, all system settings to factory (standard). Therefore, it is worth taking care in advance of how to enter the BIOS on your device and remember the changes or write down the current settings (before replacement). Most likely, the computer itself will prompt you to enter the BIOS, since, along with other settings, the system time is also reset. If you do not have experience or you do not know what changes were made to the BIOS, then it is better to entrust this procedure to a specialist.
I will continue what I wrote above =)
Of course, the messages and required keystrokes may differ - this is normal and depends on the specific type of BIOS and its manufacturer, but the essence does not change.
Usually the user writes on the screen which keys need to be pressed for a particular action.
These could be the Tab, F1, F2, F6, F8, Del, etc. keys.
Also, the motherboard manual lists all the keys that are used in the BIOS.
Most the best option- This is to immediately go into the BIOS by selecting Press Del to Enter Setup. Then we find the Load Default Settings item and press Enter - this is similar to the Press F2 to load default Setting item, then we change the settings a little.
By default, the BIOS enables some unnecessary features for modern hardware.
1. Num Lock for Booting – the light on the keyboard lights up when the system boots.
2. Floppy drive for floppy disks (sometimes also called FDD, Floppy or 1.44), what if you don’t have one?
3. Floppy Seek (search for a floppy drive) is also not needed if it is absent.
4. Primary boot device (First Boot) – floppy disk drive.
5. Show Logo Screen (may not exist - depends on the manufacturer)
If the Num Lock for Booting parameter is ENABLED, the light on the keyboard is on, if DISABLED it is not.
And so in more detail - if you do not have a floppy drive (and most likely you will not have one, since a 1.44 MB floppy disk will not surprise anyone), turn off points 2 and 3 - set DISABLE.
A modern computer can boot from the following devices - Floppy, CD ROM, Hard Drive, USB.
According to point 4 - In the Boot (Boot Devices) column, the primary boot devices can be configured as follows.
Option 1
1. First Boot – CD Rom
2. Second Boot – Hard disk
3. Three Boot – Disabled
Option 2
1. First Boot – Hard disk
2. Second Boot – CD Rom
3. Three Boot – Disabled
Option 3
1. First Boot – Hard disk
2.Second Boot – Disabled
3. Three Boot – Disabled
In either option, the system will boot, but the BIOS spends some time searching for the boot sector.
In the first case, the BIOS will try to boot from the CD if it is inserted into the drive.
If there is no boot CD, it tries to boot from hard drive.
In the second case, the BIOS loads the contents from the hard drive; if there is a problem on it, it boots from the CD.
The first and second options are good for old motherboards where the boot menu cannot be called up.
In the third case, the BIOS immediately loads the contents from the hard drive; if there is a problem on it, then we will see something like Read Disk Error. This option is good for modern motherboards that have a boot menu - when I hold down F8 when starting the PC, this menu appears, in which I can immediately select which one to use BIOS devices will boot the system. Since we usually need to boot the system from the hard drive, this option is the most optimal because the BIOS spends the least time on starting Windows.
If we have more than one hard drive, then in the Hard Drives section install system disk first.
The time and date can be set either in the BIOS or in Windows by double-clicking on the clock in the tray.
After changing the settings in the BIOS, save the settings by selecting the Save and Exit menu
How does the BIOS generally work when starting a PC?
1. The bootloader checks checksum BIOS
2. If it matches, the BIOS takes control
3. BIOS polls all devices (also called POST)
at this moment we see the type of video card, memory count and other messages
4. BIOS searches for the boot sector using the list of boot devices. (Floppy, CD Rom, Hard Drive, USB)
5. If it finds the first available one, it beeps once and transfers control to it.
6. System with of this device starts loading
Regarding the blue screen, it is also called the Blue Screen of Death. Despite the menacing name, it is not that scary. It’s not clear what is written because the text in this window was originally written in English language, and the pirates, without thinking, translated it into Russian. Usually, when an error occurs in a program, Windows automatically closes it and gives you a message like - The application was closed due to unknown error. And when Windows cannot cope with such an error, it appears blue screen. Usually the code for this error is written at the very bottom - and in the reference book you can find out what caused it.
a lion
Your experiment with replacing batteries with double beep at startup does not surprise me. When you remove the battery, the BIOS settings are erased and upon first startup you hear a double beep because it has not yet been configured. And after loading the default settings, there will be no double beep after a reboot.
I don’t quite understand this - Speccy does not stop when turned on.
If we are talking about a black screen with a blinking bar in the upper left corner, then you most likely have BIOS
is trying to find the boot sector on the floppy drive, but you don’t have one. Maybe that's why there's no beep.
Dmitriy
You wrote that by selecting the Load Default Settings option, when you start the PC, instead of text on a black background, you see a picture of the manufacturer - this is called a boot picture and it is on some ASUS-type motherboards. If the Show Logo Screen parameter is ENABLED, the picture is displayed, if DISABLED, we see the usual text on a black background. Moreover, on the disk for the motherboard there is a program that allows you to change this picture to your own.
Marina
Perhaps you have a cooler with automatic temperature control - when you turn it on, the processor is cold, so the cooler stands still until the processor warms up. Or perhaps when you remove the battery and reset the settings, the fan spins, but when you boot it turns off by default. Find the FAN item; the SmartFan function is responsible for automatically adjusting fan rotation.
Nikita
Most likely you have a transitional motherboard model with two ATA and two Sata controller ami. When resetting the Sata settings, the controller was disabled by default - find and enable it.
Hope
If your cd/dvd-rom does not read discs, there may be several reasons
1. The laser burned out
2. The laser has gone astray
3. Problem with the cable - it may have come loose or damaged
Check whether it is detected in the BIOS and in the device manager. Does your cd/dvd-rom spin disks?
Comrade admin correctly described CMOS - (complementary metal oxide semiconductor)
but many do not quite correctly understand what CMOS is - CMOS - in Russian CMOS (complementary metal oxide semiconductor) is a technology for manufacturing microcircuits based on field effect transistors, which are distinguished by low supply voltage, and not by memory type.
Timur
Most likely the problem is in the power supply - perhaps it did not pull the iron and eventually died. Didn't you notice the smoke or smell of burning from time to time, or was it overheated too much? To make sure the power supply
at least somehow it works - disconnect it from the motherboard completely - and close the black and green contacts. If the fan is spinning in it, it means it is still alive. It wouldn't hurt to check the voltage on it
Dmitriy
Perhaps your new battery is deader than the old one. If every time you are prompted to press F1 and you go into the BIOS, then most likely the problem is in the battery.
Alexei
Of course, nothing happens, the BIOS is waiting for you to press the desired key. He clearly hints to you to press F2 to reconfigure. Perhaps the first thing in your download list is a floppy drive that is not there, the second and third download items are disabled. And the Try Booting Other Devices command is also disabled, then perhaps this should lead to this situation. Alternatively, find the Boot menu and specify your HDD. It is also a good idea to check whether the BIOS recognizes your drive.
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