Every time the computer boots up, the system unit emits a squeak. Not everyone knows that this is a signal indicating the health of the system unit. And only a few know the decoding of these signals from the "system unit".
That's what we'll talk about. If you are reading this material, I recommend printing it now. When decryption is needed, it will not work to get out on the Internet. :)
So what is the "sistemnik" beeping about. These signals are the result of testing the computer hardware (there is a cooler, RAM, vidyuha, etc.). Every time you boot your computer, it tests the hardware, and reports the results with this very squeak. Deciphering the squeaks of the system unit below.
* One short beep.
Decryption:
Everything is fine. Test passed successfully. You can continue to work. It happens that some system blocks generally at this moment do not squeak.
* No squeak, no image on the computer screen.
Decryption:
Malfunctions in the power supply, or processor.
Correction:
First, check to see if the power cord is plugged into an outlet. If everything is in order, try connecting a known working device to the power filter (such a cord with a box in which there are many sockets, there is also a switch button, usually red). A phone charger is suitable, of course, with a phone connected to it. You need to check all the outlets of the power filter. If the outlet is working, the phone will charge. Next, we check whether the power supply starts up when the computer start button is pressed. In this case, the cooler (fan) of the power supply should at least twitch. If there is movement - look for a new processor, otherwise - a new power supply. You also need to check the motherboard power cable. It may happen that he moved away.
* One long continuous beep.
Decryption:
Power supply defective.
Correction:
Purchasing a new power supply.
* Two short beeps.
Decryption:
Minor bugs in BIOS settings.
Correction:
Go into the BIOS and set the optimal parameters. Exit to the BIOS is usually done with the key. If you don't know what to change, then set the default values. To do this, press the button. To exit and save - , . Some versions of the BIOS themselves prompt conflicting settings items with backlighting. Also, reset BIOS settings You can remove the motherboard battery for a few seconds.
* Three long beeps.
Decryption:
The keyboard is missing.
Correction:
Plug the keyboard into the PS/2 socket. If this does not help, you will have to change the keyboard.
* Three short beeps.
Decryption:
Error random access memory.
Correction:
To do this, you need to check if there are memory strips on the motherboard. Don't laugh, it happens. Then you need to take out all the memory sticks, carefully sweep away the accumulated dust, and stick the memory stick in turn, and start the system unit. If on some bar the "system unit" squeaks, then this may mean that the bar is faulty.
* One long and one short beep.
Decryption:
RAM is not working properly.
Correction:
It is possible that one or more memory sticks are conflicting with each other. You need to alternately stick one stick of memory and try to start the computer.
* One long and two short beeps.
Decryption:
The video adapter is not working properly.
Correction:
Fix settings in BIOS.
* One long and three short beeps.
Decryption:
The video adapter does not work.
Correction:
Check the performance of the video card. To do this, you need another, obviously working video card. You can also try to remove the card, remove dust from the slot, and stick the card in place. And do not forget to check if the card has additional power plugs. Power to such video cards must be given by a separate cord to which no device is connected. I also suggest checking if the monitor is connected and working. Try blowing out the plug connecting the monitor to the computer.
* One long and eight short beeps.
Decryption:
The video adapter is not working or the monitor is not connected.
Correction:
Same as written above.
* One long and nine short beeps.
Decryption:
Error reading BIOS data.
Correction:
Try resetting the BIOS settings by removing the battery. If that doesn't help, then flashing the BIOS. But that's another story, requiring a separate article. I will try to write it as soon as possible.
* Four short beeps.
Decryption:
The system timer does not work.
Correction:
You can try resetting the BIOS. But, unfortunately, it rarely helps. There is only one way out - to replace or repair motherboard.
* Five short beeps.
Decryption:
The processor is not working properly.
Correction:
Try to clean the dust from the processor slot, make sure the heatsink is clean and the processor temperature is low.
* Six short beeps.
Decryption:
Keyboard defective.
* Seven short beeps.
Decryption:
Motherboard malfunctions.
Correction:
Have the motherboard repaired or buy a new one.
* Eight short beeps.
Decryption:
Faults in the video memory.
Correction:
Take the video adapter in for repair, or purchase a new one.
* Nine short beeps.
Decryption:
Incorrect BIOS checksum.
Correction:
Usually it is proposed to reset the BIOS settings and allows you to work further. In which case, you can reset the BIOS by removing the battery.
* Ten short beeps.
Decryption:
Error writing data to the CMOS chip.
Correction:
This error may occur when BIOS flashing. Therefore, we will describe this part in another article.
* Eleven short beeps.
Decryption:
The cache is not working properly.
Correction:
Reset BIOS. If this does not help, we carry the computer for repair, or install a new processor.
* Repetitive long beeps.
Decryption:
Faulty or incorrectly connected RAM.
Correction:
Reconnection of memory sticks. Calculation of the faulty, by connecting in turn and starting the computer. Dust cleaning.
* Repetitive short beeps.
Decryption:
The power supply is not working properly.
Correction:
Checking the performance of the power supply, checking the cords for breakage, checking the surge protector, and, last but not least, replacing the power supply.
That's all. There will be questions - ask.
PS: For BIOS reset instead of removing the battery, you can use a special jumper - a jumper. Its location can be found in the motherboard documentation.
Addition: BIOS signal encodingsif the computer died.
AWARD BIOS Signals
Continuous signal. Power supply defective.
2 short. Minor bugs found.
3 long. Keyboard controller error.
1 long + 1 short. Problems with RAM.
1 long + 2 short. Video card problem.
1 long + 3 short. A keyboard initialization error has occurred.
1 long + 9 short. An error occurred while reading data from the permanent memory chip.
1 long repeating. Memory modules are installed incorrectly.
1 short recurring. Problems with the power supply.
AMI BIOS Signals
There are no signals. The power supply is defective or not connected to the motherboard.
1 short. No errors found.
2 short. RAM parity error.
3 short. An error occurred during the operation of the first 64 KB of main memory.
4 short. The system timer is faulty.
5 short. Faulty CPU.
6 short. The keyboard controller is faulty.
7 short. The motherboard is faulty.
8 short. Bad video memory.
9 short. Error checksum content BIOS chips.
10 short. Unable to write to CMOS memory.
11 short. External cache-memory (installed in slots on the motherboard) is faulty.
1 long + 2 short. Bad video card.
1 long + 3 short. Bad video card.
1 long + 8 short. Problems with the video card or the monitor is not connected.
PHOENIX BIOS Signals
1-1-3. CMOS data write/read error.
1-1-4. BIOS chip content checksum error.
1-2-1. The motherboard is faulty.
1-2-2. DMA controller initialization error.
1-2-3. An error occurred while trying to read/write to one of the DMA channels.
1-3-1. Memory refresh error.
1-3-3. Error when testing the first 64 KB of RAM.
1-3-4. Error when testing the first 64 KB of RAM.
1-4-1. The motherboard is faulty.
1-4-2. Memory test error.
1-4-3. System timer error.
1-4-4. Error accessing I/O port.
3-1-1. Error initializing the second DMA channel.
3-1-2. Error initializing the first DMA channel.
3-1-4. The motherboard is faulty.
3-2-4. Keyboard controller error.
3-3-4. Video memory test error.
4-2-1. System timer error.
4-2-3. Line error A20. The keyboard controller is faulty.
4-2-4. Error while running in protected mode. The CPU may be defective.
4-3-1. Error while testing RAM.
4-3-4. Real time clock error.
4-4-1. Serial port test error. The error may be caused by a device using this port.
4-4-2. Parallel port test failed. The error may be caused by a device using this port.
4-4-3. Error while testing math coprocessor.
A fairly common situation can be called a problem when, when the computer is turned on, the user hears one long and two short BIOS beeps from the system speaker. At the same time, loading operating system is not produced at all, and the user sees a black screen in front of him (sometimes messages may appear indicating a problem, but as a rule they are absent). How to interpret such a sequence of signals, and what to do to correct the situation, read on.
One long, two short BIOS beeps: what does it mean?
Let's start with theoretical information. When you turn on a desktop computer or laptop, all hardware equipment is checked. This is the responsibility of the primary BIOS system(or its modernized UEFI version). For each such system, the use of strictly defined sequences of signals is provided, which may indicate either that the check was completed successfully, or that problems were found in the operation or initialization of the equipment. In general, to figure out what the problem is, you need to refer to the technical documentation of the primary system, or at least read what different sequences and combinations mean.
In a general sense, if the user hears one long and two short beeps from the BIOS of ASUS or any other developer of the primary system, one can immediately conclude that something is wrong with the installed hardware. Unfortunately, the system does not issue notifications about failed components.
The only situation is a message about the absence of a connected keyboard. But for the most part, this applies exclusively to stationary terminals, since on laptops such a message can only appear if the built-in keyboard has become unusable. Connect any other external keyboard, for example, via USB and check how the system will boot.
One long, two short BIOS beeps: what to do first?
The issuance of such a sequence of signals may not always be associated with physical breakdowns of the installed equipment. It is possible that somewhere on the motherboard, the contacts simply moved away or clogged. All components may be in perfect order, but the ingress of dust or contamination of the insides of the computer can just lead to the fact that some elements of the filling are simply not detected.
In the simplest case, if you receive one long and two short beeps from the BIOS, you should immediately turn off the computer and turn it off completely, disconnecting it from the mains. After that, it is necessary to pause for the residual currents to disappear (ten minutes will be enough), then remove the side cover of the stationary PC case from the access side to the motherboard and perform elementary dust removal. For this, a conventional vacuum cleaner with a minimum suction power set is suitable. When cleaning, you need to be very careful not to damage the components installed on the motherboard and itself, and then the whole computer system will stop working. And replacing the motherboard is clearly not a cheap pleasure.
Problems with the graphics chip
Basically, most of the situations when the user hears one long and two short BIOS beeps are usually attributed to problems with the graphics adapter, since it is he who is responsible for displaying the image on the screen, and in case of failures in its functioning, there are problems with the impossibility of starting the operating system.
In different BIOS versions (and from different developers) such a sequence of signals may also indicate various failures. For example, the IBM BIOS only emits such signals if the computer is equipped with Mono/CGA graphics cards. But since such chips are practically not found today, such situations are very rare.
In the case of the AST BIOS, this sequence is issued only if there are problems with framing.
The Compaq BIOS gives one long and two short beeps, provided that the initialization of the graphics adapter is impossible at all. The same situation is observed with the primary systems Award and Quadtel.
The only way to fix the problem is physically. To do this, you need to remove the video card from the corresponding slot on the motherboard and first check its performance on another computer. If it works as expected, you may need to clean the slot itself. You can also try plugging it into a different slot. If the card does not work, it will have to be replaced.
Possible problems with RAM
But problems are not always associated with graphics adapters. For example, AMI BIOS generates one long and two short beeps in case of problems with RAM (a pulse sequence in combination of 1-3 is used for a video card).
In this case, the memory strips should be removed one at a time with the power off, turning on the computer after each removal and checking the system's operability. When the damaged bar is found and the system boots up normally, it will simply have to be replaced by installing similar equipment instead. In this case, one should take into account which generation the RAM belongs to, and also pay attention to the characteristics of the motherboard itself in terms of ensuring that it supports the installed brackets both according to the standard and the maximum volume. Otherwise, you will not be able to use the maximum volume, since the defined motherboard may be much less.
What to do if the problem persists?
But, suppose that such simple methods could not get rid of faults. Let's take a situation where a similar combination is produced by samsung laptop. One long and two short BIOS beeps are enough to identify hardware problems, but disassembling the device yourself is not always advisable.
In some cases, you can do much easier, since the problem may be incorrect settings of the primary system. To get started, use the reset options from the appropriate section, save the changes and check how the download will proceed. If these actions do not give a result, it may very well be that a BIOS update will help. True, it is necessary to perform such actions with skill, so as not to render the primary input / output system unusable.
A similar solution can be applied to stationary computer terminals. But this situation can mainly be associated with the replacement of hardware or with the installation of new components, when the outdated BIOS version is unable to recognize modern devices. In this case, updating the firmware is the best option to fix the problem.
Instead of an afterword
It remains to add that the situation when a sequence in the form of one long and two short BIOS signals is output through the system speaker can, in principle, be corrected. Since the true reason for this behavior of the system is not explicitly indicated, you will have to perform the described actions in the exact order in which they were given in the above material. It is advisable not to use the reset and update immediately, but leave them as a last resort, if the methods of physical intervention are powerless. However, first, clean the stationary unit from dust. This is the first remedy. With laptops, the situation is more complicated, especially if the device is under warranty. If none of the above suggested help, you will have to contact an authorized service center. And avoid contacting private traders who do not have the appropriate experience in repairing computer equipment. Then after all problems can appear much more.
Today we will talk about the situation when the computer, when turned on, emits 1 long signal, possibly after a while, a repeating signal and at the same time does not display anything on the screen.
In this situation, there are definitely problems with the equipment. Depending on the motherboard model and BIOS manufacturer, 1 long beep can mean various problems.
Phoenix BIOS thus notifies the user of a fan failure in the CPU cooler. In the Award BIOS, such a combination indicates problems with the power supply. And for the Compaq BIOS, this means a violation of the correct functioning of the RAM.
The IBM BIOS notifies you of video problems with one continuous beep. In some cases, the user can fix such a breakdown on their own. You just need to check how correctly the video card is in the motherboard slot. Perhaps the device should be tweaked a little, and the annoying signal will disappear.
AST BIOS in this case indicates a microcontroller failure. To be more precise, the signal indicates an error detected at the time of checking the first DMA channel. Often, to correct this situation, the user has to change the entire motherboard.
Solutions
So, the first thing to solve this problem is to try to get and install the RAM in place, after wiping its contacts with an eraser. Ideally, take another known working memory and insert it instead of your own.
One of possible causes given sequence of signals - random access memory
If after that the problem has not gone away, check if the processor fan is connected to the motherboard properly and if it is not jammed. To do this, try to scroll it with your finger. The computer must be powered off.
Checking the correct connection of the processor cooler
The next step in eliminating one long BIOS signal is to install a known working power supply, which you can temporarily borrow from friends or acquaintances.
The power supply is one of the possible causes of 1 long BIOS signal
The last step in an attempt to eliminate the prolonged BIOS signal at boot is to try to remove / install the video card by rubbing the contacts with an eraser.
Installing / removing a video card to solve the problem of one short and two long BIOS signals when the computer is turned on
If, after all the steps described, you were unable to start the computer, then most likely you will have to change the entire motherboard.
Below are the beep values of some motherboards.
Award BIOS
- No signals - The power supply is defective or not connected to the motherboard.
— Continuous signal — Faulty power supply. Replacement required.
— 1 short beep — No errors found. The typical behavior of a healthy computer is that the computer boots normally.
— 2 short beeps — Minor errors detected. The monitor screen prompts you to enter the CMOS Setup Utility program to correct the situation. Check the reliability of the fastening of the loops in the connectors hard drive and motherboard.
- 3 long beeps - Keyboard controller error. Restart your computer. The motherboard may need to be replaced.
- 1 long + 1 short beeps - Problems with RAM detected. Check if the memory modules are installed correctly. Or replace with other memory modules.
1 long + 2 short beeps - Video card problem - the most common malfunction. It is recommended to remove the board and reinsert it. Also check the connection to the monitor video card.
1 long + 3 short beeps - Keyboard initialization error. Check the connection between the keyboard and the connector on the motherboard.
1 long + 9 short beeps - Error while reading data from the permanent memory chip. Reboot the computer or reflash the contents of the chip (if this mode is supported).
1 long repeating beep - Wrong installation memory modules. Try removing and inserting them again.
1 short repetitive signal - Problems with the power supply. Try to remove the dust accumulated in it.
AMI BIOS
No Signals - Faulty or not connected to the motherboard power supply.
1 short beep - No errors found. The computer is ready to go.
2 short beeps - RAM parity error. Restart your computer. Check the memory module installation. The memory modules may need to be replaced.
3 short beeps - Error during operation of the main memory (first 64 KB). Restart your computer. Check the installation of memory modules in the slots. The memory modules may need to be replaced.
4 short beeps - The system timer is faulty. The motherboard may need to be replaced.
5 short beeps - Faulty CPU. The processor may need to be replaced.
6 short beeps - The keyboard controller is faulty. Check the quality of the connection of the latter with the connector on the motherboard. Try replacing the keyboard. If this does not help, then the motherboard may need to be replaced.
7 short beeps - The motherboard is faulty.
8 short beeps - Problems with the video card.
9 short beeps - BIOS chip checksum error. A corresponding message may appear on the monitor screen. Either the chip needs to be replaced or its contents rewritten (if it is Flash memory).
10 short - Unable to write to CMOS memory. The CMOS chip or motherboard needs to be replaced.
11 short beeps - External cache is faulty. The cache modules need to be replaced.
1 long + 2 short beeps - The video card is faulty. Check the connection of the monitor to the connector on the video card. The video card may need to be replaced.
1 long + 3 short beeps - The video card is faulty. Check the connection of the monitor to the connector on the video card. The video card may need to be replaced.
1 long + 8 short beeps - Problems with the video card, or the monitor is not connected. Check the installation of the video card in the expansion slot again.
Phoenix BIOS
Phonenix BIOS manufacturers have developed their own interleaving system.
1-1-3 - CMOS data write/read error. The CMOS memory chip or motherboard needs to be replaced. Also, the battery powering the CMOS memory chip may have run out.
1-1-4 - BIOS chip content checksum error. Requires BIOS chip replacement or flashing (when using Flash memory).
1-2-1 - The motherboard is faulty. Turn off your computer for a while. If that doesn't work, then replace the motherboard.
1-2-2 - DMA controller initialization error. The motherboard may need to be replaced.
1-2-3 - An error occurred while trying to read / write to one of the DMA channels. The motherboard may need to be replaced.
1-3-1 - Problem with RAM. Replace memory modules.
- 1-3-3 - Error when testing the first 64 KB of RAM. Replace memory modules.
- 1-3-4 - Error when testing the first 64 KB of RAM. Replace memory modules.
- 1-4-1 - The motherboard is faulty. It may need to be replaced.
- 1-4-2 - Problem with RAM. Check the installation of memory modules in the slots.
— 1-4-3 — System timer error. The motherboard may need to be replaced.
- 1-4-4 - Error accessing the I / O port. This error can be called peripheral device that uses this port for its work.
- 3-1-1 - Error initializing the second DMA channel. The motherboard may need to be replaced.
- 3-1-2 - Error initializing the first DMA channel. The motherboard may need to be replaced.
- 3-1-4 - The motherboard is faulty. Turn off your computer for a while. If this does not help, then you will have to replace the motherboard.
- 3-2-4 - Keyboard controller error. The motherboard may need to be replaced.
— 3-3-4 — Error during video memory test. The video card itself may be faulty. Check the installation of the video card in the expansion slot.
— 4-2-1 — System timer error. The motherboard may need to be replaced.
- 4-2-3 - Error during operation of line A20. The keyboard controller is faulty. Try replacing the motherboard or keyboard controller.
— 4-2-4 — Error when running in protected mode. The CPU may be defective.
- 4-3-1 - Error while testing RAM. Check the installation of modules in the slots. The memory modules may need to be replaced.
— 4-3-4 — Real time clock error. The motherboard may need to be replaced.
— 4-4-1 — Serial port test error. Can be caused by a device that uses the serial port for its work.
— 4-4-2 — Parallel port test error. Can be caused by a device that uses the parallel port for its work.
- 4-4-3 - Error while testing math coprocessor. The motherboard may need to be replaced.
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One long and two short BIOS beeps mean that during the hardware check, a problem was detected with one of the devices. On the screen, in this case, usually nothing is displayed.
What does one long and two short BIOS beeps mean?
BIOS may be different versions, so this combination of signals can indicate various problems with the equipment. In most BIOS versions, one long beep and two short beeps means that there is a problem with the video card (which problem depends on the BIOS version). The main BIOS versions and signal decoding for them are described below:
AST BIOS and Award BIOS - this combination of sounds is generated if there is a problem with the video card;
IBM BIOS and AMI BIOS. This signal is generated only if the computer is equipped with Mono / CGA video cards and they do not respond. In recent years, they are practically not used, so the probability of encountering such a signal in this BIOS version is very small;
Compaq BIOS and Quadtel BIOS. Such signals mean that there was an error in the initialization of the video card.
How to fix the problem?
In order for the computer to start normally, try pulling out the video card and wiping all the contacts with a dry cloth. If dirt sticks to them (or stains are visible) - erase it with a regular stationery eraser. Insert the video card back and turn on the computer. If this method does not help, you will need to contact the service, most likely there is a technical problem.
Since Bios versions are constantly updated, one long and two short beeps can mean something else. In this case, you need to look bios version and then search the Internet for this error for a specific software version.
Or ask us by writing your question in the comments, right below this answer. We will definitely help you!
