The computer does not emit sound signals. Sound signals of the computer or what the BIOS beeps about. IBM BIOS signals

Let's find out the reasons why the computer does not turn on: the speaker does not beep or beeps. That is, when, when the power button is pressed, the computer does not show any signs of life, or if it does, then they are not what we would like. The reasons can be as simple as there is no power supply, or complex - the device (memory, HDD, etc.) is out of order.

Before we start dealing with this problem, you need to check the simplest thing:

• Is there a plug in the socket
• Is the surge protector turned on
• Is the light off?
• Pay attention to the monitor. The computer may be turned on, but the monitor itself is turned off through the button or there is no power. Is a monitor cable (VGA or DVI) connected?

Of course, the above is a must for you to see what is happening on the computer, but sometimes users do not pay attention to these moments, thereby creating other complications that are more time-consuming.

220V does not come

Power may not come to the computer if:

No voltage at the input- for example, the socket is faulty. It's easy to check - connect from another outlet, or plug a known working electrical appliance into this outlet. For example, a kettle, hairdryer or a surge protector with an indicator. Usually, it is the power filter that I determine whether the outlet is working or not, if it is on, then everything is in order with it. We think further.

Behind the system unit, there is a special button for the power supply... You need this button to be in position "1" - on, if "0" - off. If this button is absent, then you do not take any action at this stage.

The power cable may come off- wiggle it, or pull it out and reconnect.

The cable itself is faulty- ring it with a tester or indicator.If these tools are not at hand, you can take another power cable and replace it during the test. If the computer turns on, then the problem was in the power cable and you just need to replace it (the cost of the cable is about 100 rubles.)

So, we made sure that everything is in order with the cable, let's move on.

Monitor and video card

If you pressed the power button of the computer, it made a noise - turned on, then you need to check the cables from the system unit to the monitor. Very often the cables leave the monitor, in this way you do not see anything on the monitor, but in fact the computer is turned on and is working.

There should be a cable from the system unit that transfers the image to the monitor and a cable from line filter that gives energy. If everything is in order with these cables, then pay attention to the video card (if you have it external).

If the video card is faulty, the monitor will display a "No Signal" pop-up window. To begin with, it is worth checking the VGA or DVI cable, this is what kind of connection you have. Check if it is firmly inserted, if the pins of the contacts are not bent. Pull out the video card and clean the contacts with an eraser.

If all else fails, try to pull it out and switch the cable to the built-in video card, if there is one, of course.

Iron malfunctions

It all starts with the power button, and that's where we'll start. Now you need to open the lid of the system unit and see if there are any breaks in the wires. Be sure to check it out!

BIOS signals

When you press the power button, the POST self-test program starts and if it fails (hardware not connected or poor contact), the download simply stops, and the speaker (speaker) starts emitting beeps. Their sequence depends on the BIOS. From them, you can determine the source of the error.

You will always find these signals in my article: "". If you find out which device is faulty, try replacing it with another one, borrow it from friends or neighbors. In the event that everything works, you can buy this component.

Broken wire for Power button

From my own experience I can say that this problem rare, but it should not be discarded for the last stage of testing. If you have a broken wire from the Power button, then you will not turn on the computer and therefore make sure that everything is in order with the wire that goes from this button.

I once tested a computer that didn't want to turn on. He seemed to have done everything he could, but there was no reaction from the computer. Then I removed the front cover from the system unit and found a broken wire there. In a couple of minutes I connected it, wrapped it with electrical tape and it turned on unquestioningly. Apparently before me, someone had already disassembled it and accidentally clamped this wire, thereby tearing it when closing the front cover.

So, if you removed the cover of the system unit, then do not be too lazy to open the front cover.

Power Supply

Now there is a choice to buy a power supply unit and of course people buy what is cheaper, because they think that this will not affect the operation of the computer in any way. If you buy a cheap Chinese power supply, then you can say that your computer will live next to a powder keg, which can explode at the most inopportune moment.

Note: it is better to save money, for example, on a computer case and buy a normal power supply.

The power supply is a very important component in a computer, as it supplies energy to all the devices in the computer. Therefore, if your computer does not turn on - a black monitor screen, then the power supply may be the cause of this breakdown.

In this section we will experiment, but if you have a spare power supply or borrow for a while from another computer (neighbor or friend), then it is better to immediately connect another power supply to your computer. This way you will save your time. At a minimum, its characteristics should be the same as yours, or better - it will be most correct. You can find all the data on the power supply on the sticker on it.

The very first thing to do is to unplug the power cables from: the floppy drive, floppy, and hard disk... Then disconnect the video card, if you have an external one, and remove the RAM from the motherboard. Then try to turn on the computer. If the computer beeps - it turns on, then turn it off, connect one device, then turn on the computer, if it turns on, then connect another device, etc. You must understand which device was preventing the computer from turning on.

To test the power supply, you will need a voltage tester. Eh, sighed users who do not have this device. I understand you, but still there are people who bought it, since the breakdown of electronics is not uncommon. We take a tester and any power connector that comes out of the power supply and measure the voltage. There should be 5V between black and red, and 12V between black and yellow.

If, during testing, the power supply voltage differs from the numbers that I mentioned above, then it’s time to go to the computer store for a new one. By the way, there are permissible deviations when measuring voltage. Approximately 5% is allowed. If you have, for example, 11.9, then everything is in order with your power supply and you need to look for the problem elsewhere.

If you want to modern block power supply, then buy 400 - 500 watts. Take the middle one.

Often problems arise due to the discharge of the battery, which is located on the motherboard. If you recently had cases when the computer got out of time, then most likely you need to change the battery. The price of the battery is small and you can get it at any computer store.

To check the battery, remove it and check the voltage in it or simply replace it.

If the computer beeps and does not turn on, then it is possible that the memory sticks are faulty. There is also a small chance that the computer is not making any sounds due to the speakers being inoperative. Pull the memory out of the slot on the motherboard and clean the contacts with an eraser. Put them back in place and try to turn them on, if it still does not turn on, pull them out again and stick in one by one. Perhaps one ruler is faulty.

If the motherboard has other connectors that you did not use to connect the RAM module (s), then try using them.

BIOS

So, another option is what to do if the computer does not turn on. If you recently made any changes in the BIOS, then now you need to return the default settings. Of course, the question is brewing how to do this if you do not see anything?

You need to disconnect the battery from the motherboard, connect the computer power and press the power button several times. Then leave the computer without a battery for 20-30 minutes and then plug it back in.

If some inscriptions appear on the monitor screen when you turn on the computer, but Windows does not load, then you can go into the BIOS and find a function to reset the settings to factory defaults. After that, do not forget to save the changes made to the BIOS by pressing the F10 button (usually).

Motherboard

So we come to the very last section of this article, as well as the most uncomfortable one - the motherboard. If your motherboard breaks down, then repairing it can add up to a tidy sum.

If you are going to repair it, then think, but does it make sense? Sometimes its repair can exceed 50% of the cost, and then the question arises, is it not easier to buy a new one?

So that you do not have a question - why the computer does not turn on and what to do in this situation, once a year carry out preventive maintenance with it - clean the dust and replace the thermal paste once every 2 - 3 years (approximately). By the way, the dust in the computer greatly hinders the operation of the computer, and since you opened system unit then clean everything from the inside.

Very often they ask me what they mean BIOS beeps when turning on the PC... In this article, we will take a closer look at the BIOS sounds depending on the manufacturer, the most likely errors and how to fix them. As a separate item, I will tell you 4 easy ways, how to find out the manufacturer of BIOS, and also remind you of the basic principles of working with hardware.

Let's get started!

1. What are BIOS beeps for?

Every time you turn it on, you hear the computer beeping. Often it is, which is heard from the speaker of the system unit. It indicates that the POST self-test diagnostic routine completed the test successfully and did not find any faults. Then the download of the installed operating system.

If your computer does not have a system speaker, then you will not hear any sounds. This is not an indicator of an error, it is just that your device manufacturer decided to save some money.

Most often, I observed this situation with laptops and DNS stations (now they release their products under the DEXP brand). "What is the threat of the lack of dynamics?" - you ask. It seems like this is such a trifle, and the computer works fine without it. But if it is impossible to initialize the video card, it will not be possible to identify and fix the problem.

If a problem is found, the computer will emit an appropriate sound signal - a certain sequence of long or short beeps. Using the instructions for the motherboard, you can decrypt it, but which of us stores such instructions? Therefore, in this article, I have prepared tables with decoding of BIOS beeps for you to help you identify the problem and fix it.

In modern motherboards, the system speaker is built-in

Attention! All manipulations with the hardware configuration of the computer should be carried out if it is completely disconnected from the mains. Before opening the case, be sure to disconnect the power plug from the socket.

2. How to find out the BIOS manufacturer

Before looking for decryption of computer sounds, you need to find out the BIOS manufacturer, since their sound signals differ significantly.

2.1. Method 1

You can make "identification" different ways, simplest - look at the screen at the time of loading... The manufacturer and BIOS version are usually indicated at the top. To have time to capture this moment, press the Pause key on your keyboard... If instead of necessary information you only see the splash screen of the motherboard manufacturer, press Tab.

The two most popular BIOS manufacturers are AWARD and AMI

2.2. Method 2

Go to BIOS... I wrote in detail on how to do this. Browse the sections and find the item - System Information. The current BIOS version should be indicated there. And at the bottom (or top) of the screen, the manufacturer will be indicated - American Megatrends Inc. (AMI), AWARD, DELL, etc.

2.3. Method 3

One of the most quick ways find out the manufacturer of the BIOS - use the hotkeys Windows + R and enter the command MSINFO32 in the "Run" line that opens. Thus will be launched System Information utility, with which you can get all the information about the hardware configuration of the computer.

Launching the System Information Utility

It can also be launched from the menu: Start -> All Programs -> Accessories -> System Tools -> System Information

You can find out the BIOS manufacturer through the "System Information"

2.4. Method 4

Use third party programs, they were described in detail in. Most often used CPU-Z, it is absolutely free and very simple (you can download it on the official website). After starting the program, go to the "Board" tab and in the BIOS section you will see all the information about the manufacturer:

How to find out the BIOS manufacturer using CPU-Z

3. Decoding of BIOS signals

After we have figured out the type of BIOS, you can start decoding the sound signals depending on the manufacturer. Let's consider the main ones in the tables.

3.1. AMI BIOS - beeps

AMI BIOS (American Megatrends Inc.) since 2002 is the most popular manufacturer in the world. In all versions, the successful completion of the self-test is one short beep , after which the installed operating system is loaded. Other AMI BIOS beeps are listed in the table:

No matter how trite it may sound, but I advise my friends and clients in most cases turn off and turn on the computer... Yes, this is a typical phrase of the guys from your provider's technical support, but it helps! However, if, after the next reboot, squeaks are heard from the speaker, which are different from the usual one short beep, then you need to eliminate the malfunction. I will talk about this at the end of the article.

3.2. AWARD BIOS - signals

Like AMI, one short beep AWARD BIOS signals a successful self-test and the start of the operating system. What do the other sounds mean? We look at the table:

3.3. Phoenix BIOS

PHOENIX has very characteristic "beeps", in the table they are written differently from AMI or AWARD. In the table, they are indicated as combinations of sounds and pauses. For example, 1-1-2 will sound like one beep, a pause, another beep, another pause, and two beeps.

4. The most popular BIOS sounds and their meaning

I could make for you a dozen more different tables with decoding of beeps, but I decided that it would be much more useful to pay attention to the most popular BIOS sound signals. So, what users are most often looking for:

• one long two short BIOS beeps- almost certainly this sound does not bode well, namely, problems with the video card. The first step is to check if the video card is fully inserted into the motherboard. Oh, by the way, how long have you been? After all, one of the reasons for problems with loading may be commonplace dust that has gotten into the cooler. But back to the problems with the video card. Try pulling it out and cleaning the contacts with an eraser. It is a good idea to make sure there are no debris or foreign objects in the connectors. Still getting an error? Then the situation is more complicated, you will have to try to boot the computer with an integrated "vidyuha" (provided that it is on the motherboard). If it boots, then the problem is in the removed video card and you cannot do without replacing it.
• one long BIOS beep on power up- possibly problems with RAM.
• 3 short BIOS beeps- RAM error. What can be done? Remove the RAM modules and clean the contacts with an eraser, wipe with a cotton swab moistened with alcohol, try to swap the modules. You can also. If the RAM modules are working, the computer will boot.
• 5 short BIOS beeps- defective processor. A very unpleasant sound, isn't it? If the processor was installed for the first time, check its compatibility with motherboard... If everything worked before, but now the computer beeps like a cut, then you need to check if the contacts are clean and if they are even.
• 4 long BIOS beeps- low speed or stopping the CPU fan. It is necessary to either clean it or replace it.
• 1 long 2 short BIOS beeps- problems with the video card or malfunction of the RAM connectors.
• 1 long 3 short BIOS beeps- either problems with the video card, or RAM problems, or keyboard errors.
• two short BIOS beeps - see manufacturer for error.
• three long BIOS beeps- problems with RAM (the solution to the problem is described above), or problems with the keyboard.
• BIOS signals are many short- you need to count how many short signals.
• the computer does not boot and there is no BIOS signal- the power supply is faulty, the processor is working, or the system speaker is missing (see above).

From my own experience, I can say that quite often all problems with loading a computer consist in poor contact of various modules, for example, RAM or a video card. And, as I wrote above, in some cases a regular reboot helps. Sometimes you can fix the problem, or reset the settings on the motherboard.

Attention! If you doubt your abilities, it is better to entrust diagnostics and repairs to professionals. You shouldn't risk it, and then blame the author of the article for what he is not to blame :)

1. To solve the problem, you need pull out the module from the connector, remove the dust and insert it back. The contacts can be gently cleaned and rubbed with alcohol. It is convenient to use a dry toothbrush to clean the connector from dirt.
2. Don't forget to spend visual inspection... If some elements are deformed, have a black coating or streaks, the cause of problems with loading the computer will be in full view.
3. Let me also remind you that any manipulations with the system unit should be performed only when the power is off... Remember to discharge static electricity. To do this, it will be enough to take hold of the computer system unit with both hands.
4. Dont touch to the conclusions of the microcircuits.
5. Do not use Metallic and abrasive materials to clean the contacts on RAM or graphics cards. For this purpose, you can use a soft eraser.
6. Soberly evaluate your capabilities... If your computer is under warranty, it is better to use the services of a service center than to delve into the "brains" of the machine yourself.

If you have any questions, ask them in the comments to this article, we will figure it out!

Greetings, friends! Today I will tell you about BIOS sound signals. You may have noticed that when you turn on the computer, it beeps or, in other words, beeps. In fact, it beeps the BIOS of your computer, thereby informing you if everything is normal with your computer or if there are any problems. Let's try to understand this topic in as much detail as possible.

What do the BIOS beeps mean when you turn on the computer?

Whichever BIOS is installed on your motherboard, when you turn on the PC, you should hear one short beep. This means that everything is working fine and after it will start Windows boot... However, sometimes the opposite is true. The BIOS beeps like an abnormal one, and the computer either does not turn on at all, or else the turn-on ends on the very first black screen - the BIOS bootloader.

This is where today's knowledge comes in handy. Because by this beeping you can determine what exactly is out of order in your PC.

Well, have you seen what kind of BIOS you have? Now you can look at the decoding of the BIOS sound signals.

Sound signals BIOS AMI. Complete transcript

Decoding of sound signals BIOS AWARD

This is how the Phoenix BIOS beeps in a special way

BIOS Phoenix squeaks a little differently from its brethren. It is more melodic, so to speak in this context. Point sound signals from BIOS Phoenix alternate with pauses in between. And absolutely all the signals of that BIOS are always short.

BIOS does not beep when the PC is turned on

Quite often it happens that when the PC is turned on, the BIOS does not beep at all. Why? Depends on the specific situation. To be on the subject, first you need to know what a speaker is and why you need one.

What is a motherboard speaker?

Motherboard speaker Is a miniature tweeter that warns the user if your computer is malfunctioning even before you turn it on. In other words, a speaker is a means of displaying information about the state of a computer. Also, a speaker is a device that emits BIOS sound signals!

This is what the speaker looks like on the motherboard. It is he who helps to emit BIOS signals!

Some reasons why the PC may not beep at startup

It often happens that manufacturers budget computers(and not only budget ones) either forget to install the speaker on the motherboard, or deliberately save on this spare part. Accordingly, the BIOS does not beep, because there is simply nothing to beep. If you urgently need to diagnose a malfunction of your computer, you can simply borrow a speaker from your friend for a day. Fortunately, it will not be difficult for you to pull it out and insert it.

Another reason why you may not hear the BIOS beeps when you turn on the computer is that you accidentally hit it or jerked it, and it just disconnected a little. In this case, insert it more tightly and everything will beep for you. Incidentally, there are motherboards in which the speaker is not disconnected at all.

On laptops, BIOS does not beep, because the speaker is not placed on them for aesthetic reasons. Imagine if every time you turn on your laptop, it gives you a characteristic, high-frequency signal. This is annoying.

Especially if your wife has already fallen asleep, and you decided to play tanks secretly, turn on your laptop, and here you have BIIIIIIIP !!! My wife immediately woke up and threw a star on you. In general, the speaker is not so relevant on a laptop.

Although some laptops can output similar audio signals through external speakers and even through headphones. Everyone who is faced with this is trying to get rid of this squeak (beep) by any means as soon as possible.

Where and how to connect the speaker on the motherboard?

This is useful for you to know if you nevertheless decide to borrow the missing speaker from a friend or buy it. When you took out the speaker from a friend's motherboard, you should have noticed that the place of its connection is indicated by characteristic inscriptions, most often it appears there Speaker or spk or spkr... The polarity for the speaker does not matter, so you can connect the speaker accurately.

A few examples of motherboards with designated speaker connections.

Useful video about BIOS signals

Let's summarize

The article turned out to be quite voluminous, but I hope it helped you understand today's topic. At least you can now connect the speaker to the motherboard and know why you need it. We also reviewed the decoding of audio signals for the main and most popular versions of BIOS. If your BIOS version differs from the ones considered, then simply specify your request in a search engine, for example, “ decoding of sound signals of BIOS IBM / DELL».

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Good day ... With each new turn on personal computer, starts automatic program diagnostics self-test POST (Power-On-Self-Test). Which is "written" in the BIOS ROM.In this small post, I would like to give some examples of tables with decoding of PC signals. That is, the sound signals of the computer or what the BIOS beeps about.

To begin with, in order to use these tables, you will need to find out the manufacturer of the BIOS of your motherboard. It is quite easy to find out the BIOS manufacturer. You need to go into the BIOS itself, (description below) and find the manufacturer's signature.

A few words about diagnostic program POST. This program checks all the most important components of a personal computer. Such as: processor performance monitoring, CMOS. The supporting chips of the motherboard and, of course, produces a quick test of the RAM. All this information about the performance of the PC, the computer outputs to the micro-speaker in the form of a sound signal from the BIOS, (beep).

If the POST program has successfully completed the diagnostics of the most important components of the computer and if the PC is operating in perfect condition, then you should hear one short beep. After that, the operating system will start loading immediately. If an inoperable component is detected when starting the computer, the POST program will immediately give a certain beep (several short or several long beeps). Thus, it identifies the detected error. Accordingly, the computer stops working.

How to enter BIOS Windows 7

In order to enter the BIOS with Winows 7 or XP, you need to press a certain key, or a set of keys immediately after turning on the PC. Accordingly, before loading the operating system of the computer itself.As soon as you pressed the computer restart button, you must immediately press a certain key. Or a set of keys. It is advisable to click it before entering the BIOS menu.

Usually, a certain inscription is displayed on the monitor screen on English language(press DEL to enter SETUP). Which talks about entering the PC settings. The Delete key is often used. There are also other options for hotkeys.

Keyboard shortcut options in Windows 7

• Ctrl + Alt + Esc
• Ctrl + Alt + Ins
• Ctrl + Alt

POST Diagnostic Programs and Computer Beeps

AWARD BIOS

AMI BIOS

DELL BIOS

IBM BIOS

AST BIOS

COMPAQ BIOS

PHOENIX BIOS

The signals of this BIOS go through a pause with short beeps. For example - 1-2-1 (1 beep, pause, 2 beeps, pause, 1 beep)

Conclusion

Do not take this information as absolutely reliable. Since computer sounds may change as newer ones become available BIOS versions... This concludes this post, I hope it turned out useful for you ...