The laptop does not turn on and makes a squeaking sound. The laptop beeps loudly. What is this and how to solve it? AMI BIOS - computer beeps - decryption
It's hard to imagine a single home without a laptop. Now we can’t do without this wonderful technology. Some work with its help, some study, some communicate. But no equipment is immune from breakdowns. Sometimes laptops malfunction. One of the most common is a squeaking sound when loading. What to do in this case and why does this situation arise?
After booting the device, information about the incorrect operation of its hardware is often displayed in the form of information on the screen or sound signals from the speaker. It is important to be able to decipher them in order to know how to act correctly.
The most common reason why a laptop beeps when booting is that a key on the keyboard is stuck or the contacts are disconnected due to the impact of spilled liquid on the device. This may happen due to overheating of the processor or due to the fact that there is a lot of dust in the heatsink. Sound signals may also be caused by a fan stopping, thermal paste drying out, or a malfunction of the processor cooling system due to falls, impacts, or manufacturing defects.
In these cases, you cannot cope without the help of a specialist, since independent intervention is fraught with disastrous consequences. This requires a complete diagnosis using special equipment. This is the only way to understand why the laptop beeps when Windows starts.
RAM
If you experience problems with RAM, you need to turn off the laptop, remove the battery from it, and open the Memory compartment cover located at the bottom of the device. Clean the memory modules from dust, insert them back one at a time, connect the laptop to power and turn it on. If the device still beeps, then the problem is with the motherboard. In this case, you cannot do it on your own.
POST
Without a microchip, turning on the laptop is impossible. When it starts, it refers to it. It is a read-only memory device that stores BIOS (Basic Input/Output System) codes. Due to this, the interaction between the operating system and all PC components is carried out.
The BIOS runs POST, a self-test program. It checks the laptop hardware:
- motherboard;
- CPU;
- RAM;
- video card, etc.
When starting up, the laptop beeps due to the fact that the program reports the test results with certain sound signals. If the squeak is short, it means the test was successfully passed. The underlying I/O system then hands over the reins to the operating system installed on it.
Flashing the BIOS
In some cases, it is necessary to flash the BIOS or completely replace this important chip.
Conclusion
As you can see, there are many answers to the question of why a laptop beeps when turned on. Therefore, you need to inspect the device very carefully, or even better, listen to the squeaks:
- Short beep reports that the system did not detect any errors - we said this above. But if after this the laptop does not continue to boot and no image appears on the screen, this indicates that the video system has failed.
- Two short beeps means detection of not too serious problems: disconnected contacts, failed settings, etc.
- Three long beeps- keyboard error.
- One long signal alternating with two short ones, reports that there are problems with the video card. I would like to separately note that all manipulations carried out with the laptop should be carried out only after you disconnect it from the power supply and remove the battery.
- One long and subsequent nine short beeps- an error occurred while reading ROM.
Let's look at the reasons why the laptop beeps several times or continuously when turned on.
The nature of the malfunction may vary, as can the sound itself. Problems may lie in a software glitch or faulty elements. Service center specialists will help you figure out why the laptop beeps continuously when you turn it on or this happens several times. Such delicate and sometimes very complex work should be entrusted exclusively to professionals.
The laptop beeps when turned on: what are the reasons?
When turned on, the device should make sounds - this is a single signal, which indicates the serviceability and readiness of the equipment. If the situation is different - the laptop beeps several times or emits a continuous beep, refuses to boot or turn on, the reason is some kind of malfunction.
The speaker always acts as the sound source. It, located on the motherboard, becomes a serviceability/failure indicator of the laptop. To diagnose the cause of the malfunction, when the laptop beeps continuously when turned on and does not load, technicians use a special table. But the most common causes of malfunction are:
- The keyboard is stuck or malfunctioning.
- Overheating of important internal components, after which the cooling system of the equipment fails.
- Power supply error.
- Incorrect BIOS settings.
- Problems related to the operation and serviceability of boards, including video cards.
For diagnostics, technicians use a special table of sound signals. This is a registry that is individual for each BIOS version, the series of which the wizard recognizes based on the laptop model.
To correctly determine the cause of the malfunction, the technician turns on the laptop and counts the frequency, and also analyzes the nature of the squeak. After such calculations, you can find in the table the corresponding value and the probable reason for the laptop’s incorrect operation. This is a task for professionals who have at their disposal not only the best tools and equipment, but also significant work experience, information literature, and knowledge.
Table of "squeaks" and decoding
Depending on the BIOS manufacturer, the table below deciphers the squeak frequency of the laptop/computer speaker
AMI BIOS
Decoding BIOS signals | |
---|---|
1 short | No errors found, PC is working fine |
2 short | RAM parity error or you forgot to turn off the scanner or printer |
3 short | Error in the first 64 KB of RAM |
4 short | System timer malfunction. Set the time in BIOS or WINDOWS system |
5 short | Processor problems |
6 short | Keyboard controller initialization error |
7 short | Problems with the motherboard |
8 short | Video card memory error |
9 short | BIOS checksum is incorrect |
10 short | CMOS write error |
11 short | System board cache error |
1 long, 1 short | Problems with the power supply |
1 long, 2 short | Video card error (Mono-CGA) |
1 long, 3 short | Video card error (EGA-VGA) |
1 long, 4 short | No video card |
1 long, 8 short | Problems with the video card or the monitor is not connected |
3 long | RAM - read/write test completed with error. Reinstall memory or replace with a working module. |
Missing and blank screen | The processor is faulty. The contact leg of the processor may be bent (broken). |
Continuous beep | The power supply is faulty or the computer is overheating |
Award BIOS
Sequence of beeps | Decoding BIOS signals |
---|---|
1 short | Successful POST |
2 short | Minor errors found. A sentence appears on the monitor screen enter the CMOS Setup Utility program and correct the situation. |
3 long | Keyboard controller error |
1 short, 1 long | Random access memory (RAM) error |
1 long, 2 short | Video card error |
1 long, 3 short | Video memory error |
1 long, 9 short | Error reading from ROM |
Repeating short | Problems with the power supply; Problems with RAM. |
Repeating long | RAM problems |
Repeated high-low frequency | Processor problems |
Continuous | Problems with the power supply |
Phoenix BIOS
1-1-2 means 1 beep, pause, 1 beep, pause, and 2 beeps.
Sequence of beeps | Decoding BIOS signals |
---|---|
1-1-2 | Error during processor test. The processor is faulty. Replace the processor |
1-1-3 | Error writing/reading data to/from CMOS memory. |
1-1-4 | An error was detected while calculating the checksum of the BIOS contents. |
1-2-1 | |
1-2-2 or 1-2-3 | DMA controller initialization error. |
1-3-1 | Error in initializing the RAM regeneration circuit. |
1-3-3 or 1-3-4 | Error initializing the first 64 KB of RAM. |
1-4-1 | Motherboard initialization error. |
1-4-2 | |
1-4-3 | |
1-4-4 | Error writing/reading to/from one of the I/O ports. |
2-1-1 | An error was detected when reading/writing bit 0 (in hexadecimal) of the first 64 KB of RAM |
2-1-2 | An error was detected when reading/writing the 1st bit (in hexadecimal) of the first 64 KB of RAM |
2-1-3 | An error was detected when reading/writing the 2nd bit (in hexadecimal) of the first 64 KB of RAM |
2-1-4 | An error was detected when reading/writing the 3rd bit (in hexadecimal) of the first 64 KB of RAM |
2-2-1 | An error was detected while reading/writing the 4th bit (in hexadecimal) of the first 64 KB of RAM |
2-2-2 | An error was detected while reading/writing the 5th bit (in hexadecimal) of the first 64 KB of RAM |
2-2-3 | An error was detected while reading/writing the 6th bit (in hexadecimal) of the first 64 KB of RAM |
2-2-4 | An error was detected while reading/writing the 7th bit (in hexadecimal) of the first 64 KB of RAM |
2-3-1 | An error was detected while reading/writing the 8th bit (in hexadecimal) of the first 64 KB of RAM |
2-3-2 | An error was detected when reading/writing the 9th bit (in hexadecimal) of the first 64 KB of RAM |
2-3-3 | An error was detected when reading/writing the 10th bit (in hexadecimal) of the first 64 KB of RAM |
2-3-4 | An error was detected when reading/writing the 11th bit (in hexadecimal) of the first 64 KB of RAM |
2-4-1 | An error was detected while reading/writing the 12th bit (in hexadecimal) of the first 64 KB of RAM |
2-4-2 | An error was detected when reading/writing the 13th bit (in hexadecimal) of the first 64 KB of RAM |
2-4-3 | An error was detected when reading/writing the 14th bit (in hexadecimal) of the first 64 KB of RAM |
2-4-4 | An error was detected while reading/writing the 15th bit (in hexadecimal) of the first 64 KB of RAM |
3-1-1 | Error initializing the second DMA channel. |
3-1-2 or 3-1-4 | Error initializing the first DMA channel. |
3-2-4 | |
3-3-4 | Error initializing video memory. |
3-4-1 | Serious problems arose when trying to access the monitor. |
3-4-2 | The video card BIOS cannot be initialized. |
4-2-1 | Error initializing the system timer. |
4-2-2 | Testing is complete. |
4-2-3 | Keyboard controller initialization error. |
4-2-4 | Critical error when the CPU enters protected mode. |
4-3-1 | Error initializing RAM. |
4-3-2 | Error initializing the first timer. |
4-3-3 | Error initializing the second timer. |
4-4-1 | Error initializing one of the serial ports. |
4-4-2 | Parallel port initialization error. |
4-4-3 | Error initializing the math coprocessor. |
Long, continuous beeps | The motherboard is faulty. |
Siren sound from high to low frequency | The video card is faulty, check the electrolytic capacitors for leaks or replace everything with new ones that are known to be good. |
Continuous signal | The CPU cooler is not connected (faulty). |
Compaq BIOS
DELL BIOS
AST BIOS
Sequence of beeps | Decoding BIOS signals |
---|---|
1 short | Error when checking processor registers. Processor failure |
2 short | Keyboard controller buffer error. Keyboard controller malfunction. |
3 short | Keyboard controller reset error. The keyboard controller or system board is faulty. |
4 short | Keyboard communication error. |
5 short | Keyboard error. |
6 short | System board error. |
9 short | BIOS ROM checksum mismatch. The BIOS ROM chip is faulty. |
10 short | System timer error. The system timer chip is faulty. |
11 short | Chipset error. |
12 short | Power management register error in non-volatile memory. |
1 long | DMA controller error 0. The channel 0 DMA controller chip is faulty. |
1 long, 1 short | DMA controller error 1. The channel 1 DMA controller chip is faulty. |
1 long, 2 short | Frame retrace suppression error. The video adapter may be faulty. |
1 long, 3 short | Error in video memory. The memory of the video adapter is faulty. |
1 long, 4 short | Video adapter error. The video adapter is faulty. |
1 long, 5 short | Memory error 64K. |
1 long, 6 short | Failed to load interrupt vectors. BIOS could not load interrupt vectors into memory |
1 long, 7 short | Failed to initialize video hardware. |
1 long, 8 short | Video memory error. |
IBM BIOS
Sequence of beeps | Decoding BIOS signals |
---|---|
1 short | Successful POST |
1 beep and blank screen | Video system is faulty |
2 short | Monitor not connected |
3 long | Motherboard faulty (keyboard controller error) |
1 long, 1 short | Motherboard is faulty |
1 long, 2 short | Video system faulty (Mono/CGA) |
1 long, 3 short | Video system (EGA/VGA) faulty |
Repeating short | Malfunctions related to the power supply or motherboard |
Continuous | Problems with the power supply or motherboard |
Absent | The power supply, motherboard, or speaker is faulty |
If your laptop beeps when you turn it on, the reasons for this may be different. Let's try to figure them out. Computer equipment is often subject to various breakdowns. The fact is that a laptop consists of a large number of subsystems that are interconnected, but their elements are not super strong and durable.
Task
If the laptop does not boot, it is important to determine the reason for this situation. Equipment developers have provided for this. A special mechanism was created to determine the cause of the breakdown and localize it. It consists precisely in special signals emitted by the computer. So, if you hear any sounds from the laptop, this is good news, indicating that the device has not completely failed. If it's too early to panic. Almost any breakdown can be repaired. Certain faults can be fixed on your own, while others will require the assistance of a professional.
Input device
If your laptop beeps when you turn it on, the most common reason for this is the keys sticking. It is caused by clogging or spilled liquid. As a result, the contacts close. It can be considered a good option if the moisture remains exclusively on the keyboard, without penetrating into the case. In the latter option, the problems that arise may be much more serious.
Temperature
If the laptop does not boot, the reason for this may lie in the cooling system. Its clogging with debris or dust, as well as mechanical damage caused by shocks when the device is dropped, cause overheating of the central processor. If the cooling system is used to dissipate heat from the graphics card, it can also become unusable.
RAM
If your laptop beeps when you turn it on, the reason for this may also be due to damage to the RAM. As a rule, in such cases we are talking about a breakdown in contact between the RAM and the motherboard. Less common reasons for extraneous sounds when turning on include incorrect settings in the BIOS or failure of the motherboard.
What does the signal mean?
If your laptop beeps when you turn it on, there may be several reasons for this. The sound comes from a small tweeter. It is located on the motherboard. He is called the speaker. The device looks like a small barrel. Its main purpose is to signal faults. The emitted sound contains information describing the nature of the breakdown. If you know the BIOS manufacturer, and also determine the squeak tone and duration, it is easy to find out which component needs repair. To find out BIOS information, you can use the documents that came with the device.
Display
Often, in addition, the screen on the laptop also does not work. We should talk about this in more detail. First of all, we check the power settings while running on battery and mains power. Set the screen brightness. If we also check whether it is not active in all positions of the lid. The fact is that if the matrix cable is damaged, the display can display information only under certain conditions. In particular, this concerns the position of the lid. Also, if a black screen appears on your laptop, you should connect it to an external monitor. We check whether the image is displayed on it. If this is the case, most likely the cable or matrix is faulty. If there is no image, the most likely problem is the hardware, primarily the video card. When turned on, you may hear the operating system loading. In this case, the fault definitely lies in the video card. When it is obvious that there is no boot process, the indicator responsible for the operation of the hard drive does not respond, the problem is in other components. The problem may also be with the power button. She is able to stop responding to pressure. This is usually caused by contamination.
Less common problems
If you can only see a black screen on your laptop, but you can hear the operating system loading, you should take a closer look at the display and shine a lamp on it. If you can see the image, but there is no backlight, it means the lamp or inverter is faulty. These elements are responsible for constant illumination of the screen. If there is a breakdown in the inverter, it can be either repaired or replaced. It all depends on the severity of the breakdown. The backlight lamp cannot be restored, only replaced. If the display turns black on the sides and shows almost nothing, most likely the reason lies in the failure of the laptop hardware. 60% of cases are a video chip failure. It occurs due to overheating. 10% - lack of contact between the power supply and memory module. In this case, a thorough check of the device is necessary. In 10% of cases it fails. Another 20% are problems of a different kind. To find and eliminate them, you need to diagnose the device. Most often, the screen matrix remains intact. Its damage is possible due to mechanical damage or liquid getting on the screen.
Types of signal
We've sorted out the display, and now let's get back to the sounds made by the laptop. Each signal carries information about the cause of the malfunction. Sound decoding may vary depending on the BIOS manufacturer. Let's look at them in order. The sequence of signals will be indicated in quotes.
Let's start with devices from DELL. The “1-2” signal indicates a malfunction in the video card. The “1-2-2-3” sound indicates an error in the BIOS ROM. If you hear the combination "1-3-1-1", the problem is with the DRAM update. If there is a keyboard error, the signal “1-3-1-3” sounds. The code "1-3-3-1" indicates a memory error. types “1-3-4-1”, “1-3-4-3” and “1-4-1-1” indicate various failures, but they are all associated with problems in RAM.
Now let's discuss AMI BIOS. 1 short signal indicates that there are no errors and the laptop is in good condition. 3 long beeps refer to RAM and indicate that the read and write test has completed with errors detected. The memory element needs to be reset. 1 long and 1 short signal indicates power problems. If the laptop beeps 8 times when you turn it on, there is a video card memory error. If you hear 1 long beep and 8 short beeps, the monitor may not be connected. Also in this case, we can talk about 10 short signals indicating a recording error in CMOS. Continuous sound may be caused by a power failure. The processor may also overheat.
1 long sound in combination with 4 short ones indicates the absence of a video card. If there is no signal at all, most likely it is a processor malfunction. 1 long sound and 3 short sounds indicate a video card error. The problem relates to the EGA-VGA system. 2 short beeps most often indicate a RAM parity error. A similar sound may occur if the printer or scanner is not turned off. 4 short beeps indicate a system timer malfunction. In this case, you need to replace the motherboard. 11 short beeps indicate a cache error. It is located on the motherboard. 1 long signal in combination with 2 short ones indicates a video card error. We are talking about a Mono-CGA failure.
Is your laptop beeping? Well, who among us, at least once in our lives, has not had to jump away from our home or work laptop because of a sharp, loud and terribly unpleasant sound that it suddenly begins to emit, seemingly completely unmotivated.
Of course, a person who is well versed in computer technology is unlikely to be seriously upset by such an accident, but when a laptop beeps, for most ordinary users it is really stressful.
The average user begins to get nervous and frantically tries to figure out what to do and what not to do. He reflexively rushes to restart the laptop with the hope that after rebooting the system this nasty squeak will stop by itself, and he sighs with relief when the laptop starts up normally.
However, not everyone is always so lucky. It often happens that the laptop beeps after the first reboot, and after the second, and after all the others, and even after completely disconnecting from the network and disconnecting the battery. And that’s when the user starts to get really nervous. Some call more advanced friends and acquaintances, some rush to the service center, and some, after thinking a little, simply order a call from a computer repair specialist at home.
In fact, situations where a laptop beeps occur quite often. Moreover, laptops of all brands and, so to speak, of any degree of sophistication squeak. And the reasons for the sound signal being triggered are also very different. However, if you don’t go into too much technical detail, the entire range of these reasons can be divided into two halves:
#1 - beeps from the start - we look at both software and hardware (components for laptops)
We haven’t pressed anything yet except the power button, but we immediately hear a piercing beep. The reason for this behavior of the device may be an error, malfunction or malfunction of the following components:
- motherboard;
- RAM;
- built-in memory card slot;
- CMOS batteries;
- video card or graphics adapter;
- central processor;
- display.
Accordingly, it will not be possible to correctly diagnose the problem and correctly eliminate it without professional knowledge and skills, and besides, attempts at “self-medication” can result in completely unexpected costs of time and money and/or the final failure of the laptop.
But a qualified specialist can not only quickly determine the cause of the malfunction, but also, if necessary, even replace the damaged part. Right here - pfn.com.ua- this is very clearly explained, with a detailed explanation of what components can be changed in modern and not so modern laptops, how much it costs and why it is profitable.
#2 - when the laptop beeps, plus the spacebar does not work
This also happens. The button is stuck. As a rule, this occurs due to dirt, dust and other unnecessary substances accumulated on the keyboard, or due to wear or damage to the buttons themselves. The problem can be eliminated at home using cotton swabs and cleaning composition. But if the laptop beeps even after carefully refinishing the keyboard, then look item #1 and draw conclusions.