Pishtit when turning on the laptop: the causes of failure and their removal

Если у вас пищит при включении ноутбук, причины this may be different. We will try to understand them. Computer technology 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 superstrong and durable.

A task

If the laptop does not boot, it is important to determinethe reason for this situation. Equipment developers have foreseen this. A special mechanism was created to determine the cause of the breakdown and localize it. It is precisely the special signals issued by the computer. So, if any sounds are heard from the laptop, this is good news, indicating that the device has failed inconclusively. If the laptop does not turn on, it is too early to panic. Almost any damage can be fixed. Certain malfunctions can be repaired by yourself; for others, a master will be required.

Input device

If you squeak when you turn on the laptop, the mostA common reason for this is keystroke. It is caused by clogging or spilled liquid. As a result, contact closure occurs. It can be considered a good option if the moisture remains exclusively on the keyboard, without penetrating into the case. In the latter case, the problems encountered may be much more serious.

Temperature

If the laptop does not boot, the reason for this maylurk in the cooling system. Its clogging with debris or dust, as well as mechanical damage caused by shock when the device is dropped, cause the CPU to overheat. If the cooling system is used for heat removal from the graphics card, it can also become unusable.

Ram

If you squeak when you turn on the laptop, the reasonThis can lurk in damage to the RAM. As a rule, in such cases we are talking about a violation of contact between the RAM and the motherboard. The less common causes of extraneous sounds when turned on include incorrect settings in the BIOS, failure of the motherboard.

What does the signal mean?

If the laptop beeps when you turn on the laptop, thena few reasons. The sound emits a small tweeter. It is located on the motherboard. He is called the speaker. The device looks like a small keg. Its main purpose is to signal faults. There is information in the sound that describes the nature of the breakdown. If you know the manufacturer of BIOS, as well as determine the tone of the squeak and duration, it is easy to find out which component needs to be repaired. To find out information about the BIOS, you can use the documents to the device.

Display

Often, besides the beep, it also does not work.screen on a laptop. This should be discussed in more detail. First of all, we check the power settings during battery and network operation. Set the screen brightness. If the screen does not work on a laptop, we also check if it is inactive in all positions of the cover. The fact is that in the case of damage to the plume of the matrix display can display information only under certain conditions. In particular, it concerns the position of the cover. In addition, if a black screen appears on the laptop, it should be connected to an external monitor. Check whether the image is displayed on it. If so, most likely, the loop or the matrix is ​​faulty. If the image is missing, the most likely failure of the hardware, especially the video card. When enabled, the operating system may be audible. In this case, the fault lies exactly in the video card. When the absence of the boot process is obvious - the indicator responsible for the hard disk operation does not react, the problem is in other components. The problem may be with the power button. It can stop responding to depression. This is usually caused by contamination.

Less common faults

If only a black screen is visible on the laptop, howeverloading the operating system is audible, you should carefully look at the display, shine a lamp on it. If you can see the image, but there is no backlight, then the lamp or the inverter is faulty. These elements are responsible for the 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 has become black on the sides and shows almost nothing, most likely the reason lies in the breakdown of the hardware of the laptop. 60% of cases are video chip breakdowns. It occurs due to overheating. 10% - no contact of power supply and memory module. In this case, a thorough check of the device is necessary. In 10% of cases, the south bridge fails. Another 20% are problems of another kind. Diagnostics of the device is necessary for their search and elimination. Most often, the screen matrix remains intact. Its damage is possible with mechanical damage or liquid on the screen.

Signal types

With the display sorted out, and now go back tosounds made by the laptop. Each signal carries information about the cause of the fault. Sound decoding may differ depending on the BIOS manufacturer. Consider them in order. The quotes will indicate the sequence of signals.

Let's start with the devices from the company DELL.The signal "1-2" indicates a malfunction in the video card. The sound “1-2-2-3” reports an error in the BIOS permanent storage device. If you hear the “1-3-1-1” combination, the problem is with the DRAM update. In case of a keyboard error, the “1-3-1-3” signal sounds. The code “1-3-3-1” indicates an error in memory. Audible signals like “1-3-4-1”, “1-3-4-3” and “1-4-1-1” indicate various breakdowns, but all of them are related to malfunctions in the RAM.

Now let's discuss the AMI BIOS.1 short signal indicates no errors and good condition of the laptop. 3 long sounds refer to the RAM and indicate that the read and write test was completed with error detection. The memory item must be reinstalled. 1 long and 1 short beep indicate power problems. If you turn on the laptop beeps 8 times, we are talking about a memory card error. If 1 long and 8 short beeps are heard, a monitor may not be connected. Also in this case we can talk about problems with the video card. 10 short beeps indicate a write error in CMOS. Continuous sound may be caused by a power failure. CPU overheating is also likely.

1 long sound combined with 4 short soundsabout the absence of a video card. If there is no signal at all, most likely, we are talking about 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 signals most often indicate a parity error of RAM. A similar sound may occur if you do not turn off the printer or scanner. 4 short beeps indicate a system timer fault. In this case, you must replace the motherboard. 11 short beeps indicate a cache error. It is located on the motherboard. 1 long signal in combination with 2 short signals indicates a video card error. This is a failure of Mono-CGA.