The power button on the laptop blinks. Laptop won't turn on and lights won't turn on
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Good afternoon, dear readers!
In this article, we will analyze the problem that the laptop does not turn on and the power indicator is off, as well as the problem when it does not work (or slows down) with a battery, but it works normally from the mains.
I want to say that I have already encountered both problems, not only in theory, but also in practice.
And let's sort it out in order, possible problems, and solutions. And besides this, we recommend that you read other similar articles.
In case you have special cases, then ask below in the comments - they will help you. Also, we will be grateful if you share this article with others by clicking the social buttons. networks. Thank you!
We solve the problem with turning on the laptop
Read also other helpful articles:
So let's go...
Due to improper use of the battery, it soon became faulty.
This was due to the fact that I used the laptop most often from the mains, but the battery was always inserted. Manufacturers recommend removing the battery after a full charge if the laptop is to be used from the mains.
This is due to the fact that laptop batteries are designed for a limited number of charge-discharge cycles.
In other words, sooner or later they will fail. Most often, it starts with the fact that the laptop discharges faster, and then stops charging completely, i.e. the icon in the taskbar indicates that it is charged, say, 80% and is not charging.
This means that its maximum volume has decreased, which means it will not be able to work as before. In my case, this is how it all started, and then I noticed that if I turn on the laptop from the mains, but with the battery inserted, it would not start, and sometimes it would start, but for a very long time.
The power on process with the battery took about 5 minutes. After removing the battery, the laptop worked as before: fast startup and no problems.
If you encounter such a problem, then first of all you need to make sure that the battery is working.
We check the laptop for turning on with and without a battery ... We look at the power indicator
To do this, do the following:
First, remove the battery and check for any damage to the contacts, and then remove all USB devices.
Secondly, after making sure that the battery is not damaged, insert it back and connect to the mains. Leave the laptop turned off while charging. At the same time, the indicator on the laptop should glow, indicating that charging is in progress.
Third, turn on the laptop with battery only. If it turns on, then the battery is working, but you need to check it.
Checking and calibrating the battery
Calibration allows you to more or less accurately determine the level of charge / discharge of the laptop battery.
As a result, the battery is used more efficiently.
For nickel-cadmium (Ni-Cd) and nickel-metal hydride (Ni-MH) batteries, calibration is one of the means to combat the “memory effect”. Usually marked on the battery itself. Take a look now and write a comment what you have.
Let's take a look at how the battery is calibrated.
If your laptop provides for battery calibration using the BIOS Setup utility, be sure to use it.
Consider the battery calibration process using an HP laptop as an example:
Use the following procedure to check the battery:
Press and hold the power button for five seconds to turn off the computer.
Turn on the computer and press the key several times in a row F2 (Delete, Esc, F8, F3, F5, F10, Ctrl + Esc - the choice of the button depends on your laptop model), until the HP PC Hardware Diagnostics UEFI window opens.
From the main menu, select Component tests.
From the list of component tests, select Battery.
In the battery test area, select Run once.
The battery test will begin.
The battery test takes two minutes. If battery calibration is required, it will take 2 to 4 hours.
Can be canceled at any time by pressing the Esc key.
After the test is complete, the first line on the battery test page displays the battery status.
Based on the data received, it will be necessary to make a decision: what to do with the battery, if everything went well, the laptop may continue to work, if not, then you should try connecting another battery, if available.
If the laptop does not turn on even with a different battery, then you may have to contact a service center to replace the motherboard.
The laptop does not turn on and the power indicator does not light up. What to do?
If your computer suddenly has problems loading the operating system, you must first perform a hard reset.
Disconnect all peripherals, remove all USB devices and media.
Disconnect the AC adapter, remove the battery, and then press and hold the power button for at least 15 seconds.
Reconnect the AC adapter (do not connect the battery), press the power button, check the indicator lights next to the Caps Lock and Num Lock keys are on, and listen for spinning fan or hard drive noises.
If the speaker does not emit signals, and the indicators do not light up near the Caps and Num lock keys, then two variants of the problem are possible: the cable for connecting the power button to the motherboard is damaged, or the AC adapter or power connector may be damaged.
First check the AC adapter and cord for damage, chafing or breaks, etc.
If you do not find any signs of damage, you need to disassemble the laptop.
Remove the upper part of the case and then check the power supply cable from the motherboard and from the power button, if it is damaged, do the following.
Disconnect the cable.
After you disconnect it, check its integrity, it may be that at the attachment points it could bend and the contacts came off the cable.
In this case, disconnect the sealing tongue, it will still come in handy. 
Then you need to cut off a small part of the cable, but be careful not to cut too much, otherwise the cable will not be long enough for a reliable connection.
After cutting off the excess, take a knife, scalpel or something sharp, and then carefully strip the contacts from the desired side to about the same length as was on the cut off faulty piece of the cable.
After that, plug it back in, and insert the sealing tongue from above and fix it.
If the cable is intact and not interrupted anywhere, check the power connector and its connection to the motherboard.
Also check for physical damage and if it is well connected. If something is damaged, you will need to contact the service center for a replacement.
To check the adapter, you can take a working adapter from your friends, or buy it in a store, if the laptop does not work, you can always return the product back by presenting a receipt.
Such problems are always associated with power adapters or batteries, and therefore, they must be replaced.
I hope this article will help you in diagnosing the problem with your laptop.
Good luck and see you soon!
In some cases, it turns out that, despite the fact that the power indicator is on, the laptop does not turn on. Why does this situation arise? What do you need to pay special attention to? What might be needed to remedy this situation? Understanding all the issues that arise is actually not as simple as it might seem at first glance. The personal computer is a rather unpredictable piece of equipment. Power-on problems can be the result of many failures. Some users are in a hurry to go to service centers. This is not recommended. First, it is advisable to independently diagnose the problem that has arisen. It may be possible to cope with the situation without outside help.
video card
Laptop won't turn on even though the power light is on? There are various reasons for this phenomenon. The first thing you might think about is the problems that occur during the operation of the video card. In the case of a stationary PC, it is quite easy to detect and fix such a breakdown. To do this, you just need to remove this component and connect it to another machine. But in the case of laptops, the user will have to try. If you suspect a malfunction or breakdown of the video card, it is recommended to contact service centers or call the system administrator for help. You don't even have to try to diagnose the problem yourself. The laptop usually turns on by itself - you can hear the work of the cooler. But there is no picture on the screen. Sometimes you can even hear how the operating system is loaded.
Screen failure
If the power indicator is on, but the laptop does not turn on and the problem with the video card is excluded, then the device may have damaged or broken the monitor. This is an extremely rare occurrence that sometimes occurs in practice. If the display is broken, then the reasons for the breakdown are likely to be the same as in the case of the video card. In this case, there will be no image on the monitor, but the sound of turning on the OS will appear. You will not be able to deal with this problem on your own. The only option is to buy a new laptop. You can try contacting the service center under such circumstances. Perhaps they can repair the display there. Usually, after such a repair, the devices do not work for a long time. You will end up having to replace the laptop with a new one anyway.
The following possible situation can be corrected without outside help. What should I do if the power light is on but the laptop still won't turn on? The main causes of this phenomenon are a failure or a reset. Perhaps the BIOS settings have gone wrong. It is for this reason that the problem in question could occur on the laptop. In this situation, it is recommended to perform a BIOS reset. The computer should then work at full capacity.
Lack of components
What else could cause this problem? If we are talking about a new laptop that worked before, then you should not exclude the absence of any components. If the laptop turns on by itself, but nothing is displayed on the screen, and the NumLock and CapsLock buttons do not go out, then the BIOS may be initializing. Probably, the laptop does not have RAM or a processor. If we are talking about a device that previously functioned, then the reason may be hidden in the breakdown of the components listed above.
HDD
In some cases, it happens that despite the power indicator being on, the laptop still does not turn on, although it used to work fine before. The cause of the problem is the hard drive. For the computer to refuse to start, one small failure is enough. In this case, the power button will still light up. You may also notice that the fan is running normally. At the same time, the NumLock buttons and others light up and go out as expected. It is recommended to disassemble the laptop and disconnect the hard drive. Now try turning it on again in this state. It did not help? Then you can try again carefully attach this component. If the problem was a crash, then it should go away.
Battery
What should I do if the power light is on but the laptop still won't turn on? Diagnosing a problem in this case will require certain knowledge from the user. Do not rush to give your computer for repair. It should be borne in mind that most of these problems are usually solved with the help of a professional. You can solve the situation yourself if the problem is with the battery. She's probably just pissed off. Then it will be enough just to connect the power to the network and the computer and try again to turn on the devices. Before pressing the power button on the laptop, it is better to wait a few minutes. This will allow the battery to get a little charge. This approach turns out to be quite effective. Some experts also recommend removing the battery completely from the laptop, and then connecting the power cable to it. After that, you need to turn on the computer and observe the situation. If the computer has earned at full strength, then nothing more needs to be done. Otherwise, the source of the problem will have to be solved elsewhere. Practice shows that a discharged laptop or battery problems are quite common. These problems are fixed quite easily and without outside help.
Closures
What to do if Samsung laptop won't turn on? At the same time, the power indicator is on and the cooler is working. The next reason is quite rare. It is almost impossible to diagnose it on your own. This problem can occur if the southbridge or northbridge is damaged in the laptop. Why does this situation arise? Bridge failures can be caused by various reasons, for example, through a short circuit resulting from a temperature difference. If, because of this, the USB port on the laptop is damaged, then the problem under study will most likely appear. The method of correcting this problem in this case will be one - repair of damaged components. Buying a new PC will be the most effective way to solve this problem. Refurbished components in laptops are unlikely to last long. Here, each user will have to decide on their own what to do.
Viruses
If the laptop refuses to turn on, but at the same time the device has been functioning for some time, then you should think about the impact of viruses on the device. Often, a computer infection leads to the fact that the computer simply stops functioning normally. In some cases, it comes to damage by BIOS viruses. In this case, you may experience problems with turning on the laptop. It is unlikely that you will be able to fix the problem yourself. As in most of the cases mentioned earlier, it is best to take the computer to a service center right away. Here you will be helped to return the laptop to working capacity and cure it of viruses. Such a scenario, fortunately, is quite rare. However, you should not exclude it, especially in cases where the user himself admits the presence of viruses on the computer. In some cases, problems associated with turning on the laptop also occur after OS treatment. In this case, it will be enough to first reinstall the BIOS, and then the operating system. After that, no problems will bother you.
Conclusion
Let's sum up the preliminary results. To begin with, it is worth noting that diagnostics and troubleshooting in most cases come down to calls to a service center. Most of the time, this is exactly what a lot of people do. After all, a laptop is a fairly complex device. Repairing it yourself is actually not as easy as a desktop computer. If you cannot independently figure out why the computer does not turn on, then you can immediately contact a specialized service center for help. If you suspect a specific problem, be sure to report it to the service center staff.
The indicators on the laptop do not light up and the device does not turn on - a common malfunction that owners of portable devices face. This problem occurs for various reasons: some of them can only be fixed in a service center, and some can be dealt with on your own. Every laptop owner should know why the laptop does not light up and has problems starting up, as well as be able to identify problems with the charger and battery. Let's look at a few common faults.
What to do if the laptop stops turning on?
If the device does not respond in any way to the pressed power button, this problem can occur for several main reasons:
- The power supply failed, and the battery was completely discharged. In this case, when you press the power button, the power indicator should blink several times, showing that the charge level is critically low, and there is no external connection to the network. With such malfunctions, the power supply will have to be changed.
- The contact in the socket of the power supply is broken, the cable is damaged. These are common malfunctions: the socket fails when the laptop is jerked or moved with the cord connected. The power supply socket and cable must be replaced to restore functionality.
- Short circuit on the south or north bridge. In such cases, the problem is solved only in the service by completely disassembling the device and soldering the affected microcircuits.
Laptop can't charge battery
If the charging indicator on the laptop is not on, that is, the device is working from the network, but does not charge the battery, the following are the most common causes of problems:
- The battery has failed. If the battery indicator on the laptop does not light up, then it is most often easier to replace it than to repair it. The service life of even very good batteries rarely exceeds 4 years, and over time they have to be completely replaced. Otherwise, the laptop will lose mobility and become analogous to a PC.
- Not enough power supply. The problem occurs due to incorrect selection of the block when replacing. It is important to choose a fully compatible model with the appropriate characteristics.
- The problem is in the power supply. If the power indicator on the laptop is off, this may indicate problems in the operation of the controller; to eliminate the cause of the breakdown, the device will have to be disassembled in a service center. Problems with the internal module require professional diagnostics on special equipment.
Sometimes it happens that there is no mains power, while the laptop can run on battery power. The causes of the problem are either a malfunction of the controller, or problems with the power socket. In rare cases, the laptop will not start because of the battery: it can cause a failure on the motherboard, most often this happens when trying to install an incompatible third-party battery.
In case of any hardware malfunctions, it is not recommended to disassemble the laptop yourself if there is no experience in such work and professional knowledge. By entrusting the device to unverified "craftsmen", you run the risk of even more serious damage that will require a long and expensive repair.
If the problem is caused by a broken battery or faulty power supply, you can easily fix it by choosing new parts from licensed manufacturers in our online store. Affordable prices are offered for all products in the catalog, our consultants will help you make the right choice and find the most suitable option to solve the problem.
Is your laptop broken? Are you trying to turn it on, but all you see is a blank black screen? This is a very unpleasant situation, but even in such a situation, you can try to restore its performance, or at least try to determine what exactly is faulty in the laptop.
Most often, the cause of the malfunction is, but sometimes there are more serious malfunctions, which we will also consider in this article. We will start identifying the failed component a little later, since we need to start with other steps.
Step 1. Determining the laptop model
The first thing to start with is to clarify the manufacturer and model of your laptop. For example, HP Pavilion dv6, Acer Aspire 5520, Asus EeePC, etc. Usually, on the laptop case, on the packaging box (if you have one) or in the documents (warranty card, delivery note) there are corresponding inscriptions.
This information is necessary to more accurately determine the nature of the malfunction that has occurred, since the external manifestations of the malfunction may differ for laptops from different manufacturers.
Step 2: Warranty check
The second is to try to check the warranty on your laptop. At this stage, you will also need the serial number of your device (usually located on the laptop case (bottom) or under the battery).
In the photos below, you can find an example of what the serial number looks like on laptops from various manufacturers.
This information will help in determining the warranty status of your laptop, in order not to "self-medicate" if your laptop is still under warranty.
You can skip this step if you are sure that your laptop is out of warranty.
How to check laptop warranty? If you don't know how to check the warranty of your laptop, you can use the model and serial number of your laptop.
Step 3. Determining the problem
In order to determine which component of the laptop is faulty, there is an external indication of error codes. To do this, use the LED indicators (bulbs) of power (battery charge), as well as the indicators of the Caps Lock and Num Lock buttons on the laptop keyboard.
When you turn on the laptop, you need to pay attention to one (or more) indicators located on the Caps Lock or Num Lock buttons. These indicators (“bulbs”) will flash periodically. The number of repeated signals will indicate the error code.
Where are the Caps Lock and Num Lock indicators on my laptop? If you do not know exactly where these indicators are located in your laptop model, you can use the indication of your laptop model and our technical specialists will try to help you with this.
Using the information below, you can try to determine the problem with the laptop or its faulty component. Basically, this code system is suitable for HP laptops released from 2011 to January 2015, but it is possible that some codes will work for most laptops from other manufacturers, for example, Asus, Acer, Sony, Samsung, etc.
1 TIME
CPU
2 TIMES
3 TIMES
MEMORY
4 TIMES
VIDEO CARD
5 TIMES
MOTHERBOARD
8 TIMES
POWER UNIT
- CPU FAULTY
- BIOS ERROR
MEMORY FAULTY
When this type of error occurs, you can use the following guidelines to determine the faulty memory module:
- Determine how many slots and memory modules are installed in your laptop. The number of slots can be 1 to 4
- Try removing each memory module (if there is more than one) from the slots one by one and reinstalling
- Try installing each memory module (if there is more than one) one at a time in the slot numbered 1
It is possible that only one of the memory modules is faulty. - Install another similar (same specifications) memory module that is known to be good.
The central processing unit (CPU) is the main working component of a computer. If the indication indicates a malfunction of the central processor, then you need to contact the service center for help. You cannot solve this problem on your own. Since a violation in the operation of the central processor may be the result of some other, more serious malfunction. For example, incorrect laptop power modes.
A fairly rare error. May occur when the laptop BIOS is not updated correctly.
Most modern laptops have BIOS protection and recovery mechanisms.
Therefore, if a BIOS error occurs, you may not even pay attention to the indication, because. if such an error is detected, the laptop will restart and the recovery procedure will automatically start. When the recovery procedure is completed, the laptop will also be restarted. The only thing you might notice is a longer (than usual) boot process, as well as a message on the screen that the BIOS has been recovered from an error. If this error occurs intermittently, you may need to update the BIOS