Why is the phone not charging through the usb port. Why is my iPhone not charging from my computer? Crash after Windows update

In fact, this problem is very rare. As soon as you connect your smartphone / phone to the USB port of a computer or laptop, it immediately starts automatically charging. This is, so to speak, the norm. Even if you connect the device to the USB port of the TV, the smartphone will start charging in the same way. Yes, not as fast as from the network, but it will be charged. And yet, some users complain that when the device is connected, it does not even start charging. What's the matter?

If we were talking about tablets, it would be much easier to answer the question posed: this is due to the fact that some tablet models do not initially imply USB charging. The reason is simple: they spend more energy than they receive from the USB port of a computer or laptop. This applies to large tablets, with much smaller smartphones there are no such restrictions, and therefore it is necessary to look for a reason.

Device reboot

This is the first thing you should do with this kind of problem. If there was a failure in the smartphone software, it is the reboot that allows you to deal with it in most cases.

Reboot the gadget, reconnect it to the USB port and see if charging has started.

Cable inspection

It would seem that what can happen to the USB cable? It looks like new ... Yes, most often the USB cable really looks like new or at least is in excellent condition, but this does not mean that it functions normally. It is enough just to pinch it once, for example, with the leg of a chair, so that it stops working.

By the way, this is easy to check. Connect the USB cable with the phone to the wall charger and see if the device is charging. If so, it's definitely not the cable.

By the way, even if the cable is working, but you have another one, try using it.

Cleaning the pins on the microUSB connector

Pay attention to the microUSB port on the smartphone itself. Perhaps dust has accumulated in it and the contacts need to be cleaned - the problem is in them.

In a good way, it is better to clean the contacts with an eraser, but they simply cannot crawl into such a small hole, so you can use a dent or a match with cotton wool. And be extremely careful - one awkward movement and the microUSB port will be disabled. In this case, the phone will not charge at all.

Using Other USB Ports

Be sure to use a different USB port, if available. It is possible that the current USB port is not receiving power, or there is not enough current, or it has completely failed.

Insufficient current for charging

If there is not enough current, the smartphone will not charge from the USB port. However, like other devices.

Why is there a shortage of current? The reasons may be different: lack of power in the USB port located on the front panel is a common problem, you must use the port located on the back of the system unit; low-power motherboard circuits; component settings, etc.

microUSB port not working

In this case, we are talking about the microUSB port of the smartphone. If it fails, then the device does not charge at all and there is only one way out - to change the part.

What to do if nothing helps?

First, try connecting your smartphone from another computer or laptop to the USB port. If it doesn’t charge in this case either, it’s probably in the device itself, but only a specialist can find out the true reason.

If it happens to you that charging is on, but the smartphone is not charging, read the article. It describes all the problems and ways to solve them.

The main advantage of any smartphone, like any other mobile device, is to keep the battery charged for a long time. But you still need to recharge the gadget.

Previously, companies producing such devices equipped mobile devices with special original connectors.
It was possible to turn on the device for charging only in the outlet using the branded “charging” provided by the manufacturer.
Now mobile devices are equipped with universal micro-USB connectors on Android devices and USB type C on new gadgets with the latest versions of Android and iOS.
This helped to make using the device simple for the user, losing the cable is no longer a problem, since you can charge the device from a PC. But what if you can’t add charge to your smartphone using this charging method? Look for the answer further in the text.

Why is the Android phone and iPhone not charging via USB from a computer, laptop, from charging from the network?

If you connect your smartphone to charge from a computer or laptop, and the charging percentages do not increase, the reasons can be very different. Let's understand in more detail. It is worth noting several main reasons why Android and iPhone phones do not charge via USB from a computer, laptop, or from charging from the mains. Let's consider them in more detail:

System glitch in the device program.

If the OS is frozen, the controller does not give a command to transfer current to the battery.
To get rid of this problem is simple: reboot the device by holding the on / off or Home key for a few seconds.
Then turn on the device and connect to the computer to charge.

The problem is in the firmware.

Often this problem occurs with iPhones. If you recently updated the firmware, and suddenly the phone stopped charging, then roll back.
But to perform this action, you need a backup, which you should have made earlier.
Such restoration is performed through iTunes. Just click on the program Restore from copy».
If you do not have a system in reserve, then do a factory reset. But keep in mind that in this case you will lose all photos, music and video files.

Charger failure

The charging block can quickly break down, especially if it is Chinese and cheap.
You need to charge expensive smartphones only with a branded unit. From the use of "left charging" there can be the most unpleasant consequences: rapid battery wear, device breakdown, or even its unexpected explosion.
Try connecting your device to your computer with a different cable.

Lightning cable failure

Even if such a cable looks great on the outside, it can still be faulty.
Try another cable of the same kind. If charging goes on, then the problem is in the old cable and you need to buy a new one.

Glitch in the Lightning port

This is often the case with iPhones.
It's not always a breakdown. The cause of the problem may be dust and dirt. This will be visible if you look into the port.
If you can see that there is a lot of dust in the hole, then carefully remove the dirt from the port with a toothpick. The contacts will clear and begin to conduct current.

USB port not working

The USB port on the PC or laptop may not function or may be low on current or power.
Connect to another port or charge your smartphone from a wall outlet or PowerBank.

Malfunction in details (battery, cable, etc.)

If you have already completed all the tips, but the phone still does not charge, then it has some kind of faulty part.
It happens that water gets into the smartphone and it ceases to function normally.
In this case, you need to take the device to the service of specialists. They will find the problem and repair the damage.

Charging current shortage

You can find this out using a tester, usb-doctor, or using a special program on your phone.
If you can’t do it yourself, contact IT-specialists in the service.

Slim cable

Perhaps the wire is too thin and does not conduct current in the right amount.
Try using other wires with the charging box instead of recharging from the computer.

Not enough power in the motherboard circuit

Unlikely, but such cases do happen. Basically, manufacturers adhere to the standard, but such a malfunction must also be taken into account. If the manufacturer still does not declare the function of charging devices via a USB port, then you should not rely on powerful charging currents.
Contact a specialist if you suspect this problem.

bus washing

If your computer is designed only to turn on from the periphery, and not to power gadgets, the power may not be enough to charge.
You should look at the BIOS settings. But it's hard to do it on your own. Contact the experts.

If you doubt the quality of the USB ports, then you should purchase a special tester for the charging cable. Its price is small (up to 250 rubles), but you can always find out if this is the cause of the malfunction.

The phone shows that charging is in progress, but it is not charging: what to do, how to charge?

When a mobile device is not charging, this is a disappointment for the user, especially if charging is in progress and the battery remains at zero. In this case, panic begins, because a modern person without a phone is like without hands. What to do and how to charge if the phone shows that it is charging, but not charging? Here are the possible causes of this problem and ways out of situations:

Charging unit does not work. Try charging the device through a different wire and block. If it doesn't help, then that's not the problem.
Faulty phone system. If you are sure that the wire and the charging block are working, and the smartphone says that charging is in progress, but the battery is at zero, then you should contact the specialists with the device. In this case, you need to flash the device or replace the input.
The battery has failed. The battery in the phone cannot be repaired, and if it fails, you need to buy a new battery. If this part is built into the smartphone, then you will have to purchase a new device.
Open applications and other services. If you put the device on charge and did not close applications, and also did not turn off the work of services, then charging will go slowly, as the functioning of open programs is powered. Disable all applications, programs, services, and especially WI-FI.

It often happens that the phone is on charge for a long time, for example, all night, and the battery charge after that is meager - 1-2%. In this case, the problem is a faulty battery or power controller. In the first case, you can replace the battery and continue to use the device, and in the second case, you need to take the device to professionals for repair.

Video: iPhone4 shows charging but won't charge. We repair the battery cable

The battery is the weak point of any laptop. The older he gets, the faster the battery drains. Therefore, the issue of recharging it becomes more and more acute, and the charger is not always at hand. Can I charge a laptop via USB port from another computer or from an external PowerBank battery? Let's try to understand this issue.

If I had been asked such a question a few years ago, I would have answered with confidence that no, you can’t! Indeed, in the past, the USB port on a laptop was used exclusively for connecting peripherals. Yes, it was possible to recharge a phone or tablet from it, but it had no reverse action. A special power supply was used to charge the battery. Moreover, often each manufacturer had it with its own, individual connector, which was terribly inconvenient. Especially on the go.

But time passes and everything changes. The latest laptops, netbooks and ultrabooks use the new USB 3.1 port for power connection. This is the so-called Type C connector. This is what it looks like:

So thanks to technological progress, you can finally use the USB ports to charge your laptop.

What are the differences between ports

The fact is that the USB standard itself was developed quite a long time ago, back in 1994. And then the question of supplying pure power through this bus did not stand at all. Later, for more than 20 years, quite a few types of USB connectors were invented:

But only all of them were united by the fact that they could not provide power transmission of more than 4.5 watts. If this was more or less enough for a smartphone or tablet, then for a laptop you need at least 30, and preferably 50 and above. Accordingly, charging a laptop via USB was out of the question until a more energy-intensive variety appeared. And it became Type C. In size, it is almost two times smaller than the usual port of the 2.0 / 3.0 standard:

But it may well provide the transfer of current with a power of up to 100 watts in both directions - that is, both to the connected devices and from them to the host. This is quite enough not only for ordinary models, but even for gaming laptops. You can take one or two powerful power banks with you on the road and not worry about not having an outlet at hand!

But what about the owners of old models?

Unfortunately, they will not be able to charge a laptop via a USB port under any circumstances. They just don't know how to do it. How to be in this case? Just buy an extra battery and carry it with you. Well, or, as an option, save money to buy a new mobile computer. You can argue - you can’t save up money for this! But if your work depends on it, then maybe it makes sense to invest? You decide! Good luck!

Let's imagine such an unusual situation. The user purchases a tablet, unpacks it and decides to charge it from the computer. Using a USB cable, he connects the device to a computer or laptop and ... Nothing happens. Generally. What's the matter, how to be in such a situation?

Lack of power

Some tablets simply do not have enough power to charge from a USB port. As a rule, this applies to models with large screens, since they consume a lot of energy, but according to reviews, this drawback also occurs on small tablets.

What to do? Accept it as a feature of the device, you can’t do anything about it anyway. Charge your tablet from the network.

By the way, if there is a lack of power, the tablet may show that it is charging from the USB port, but in fact it will not charge.

Restart your tablet

If until now the tablet was charging from USB, but now it doesn’t want to, it may be a failure of the operating system. What OS, computer or tablet? Just in case, we recommend that you restart the tablet first and, if this does not help, the computer.

By the way, try connecting the switched off tablet to the computer and look at the effect, it often helps.

Use a different USB port

It is possible that the port you are using has some kind of problem, causing it not to charge the tablet. Try to use a different USB port, fortunately, even on laptops there are at least 2-3 of them.

Check the USB cable

This is especially true if you have pinched the cable or have pets that love to gnaw on wires. To check the wire itself, try charging the device from the mains with it. Not charging? Most likely, the matter is in the wire, although we should not forget about the USB connector on the tablet itself, which could fail.

The most common failure for most laptop users is a non-charging battery when the power supply is on.

It happens that this trouble happens with a new (just purchased) laptop.

There are some variations on this.

For example, the system reports a connected battery, but does not charge.

Also, the laptop itself may not respond to the connection to the outlet.

Let's look at the most common causes of why charging is not going on.

Weak voltage

One of the most common reasons - you see that in the Windows notification area there is a system message that the battery is charging, and in brackets - "Connected, not charging".

Alert area message

Check mains voltage.

Maybe the problem is in the whole apartment or a specific outlet.

Plug it in and see.

Cord problem

The wire may break under the braid.

In this case, you need to check the voltage with a tester.

If not, then connect to another device or use a working power supply (and you know that it works for sure).

Often, many do not have such opportunities and you need to buy a new adapter.

Battery overheating

With this option, the system stops charging so as not to damage the laptop battery itself.

If you just plugged it into the outlet and it is charging normally, and after a few minutes it suddenly stopped, then the reason is the overheating of the battery itself.

No charge with good power supply

When you returned from the store with a brand new laptop, you found that it was not charging and at the same time a license system was preinstalled on it?

In this case, there may be a factory defect, which is unlikely, or incorrect battery initialization (problem with the controller).

We perform the following actions:

Turning off the laptop
Unplug cord from laptop
Pull out the removable battery
Press the start key, holding it for 15-20 seconds
Putting the battery back in place
We connect the battery
Turn on the laptop

These steps don't always help, but at least they're safe, easy to do, and save you time if the problem is fixed.

There are two other variations of this method:

1. Only for the case with a removable battery - turn off the charging, pull out the battery, then press the power key and hold for a minute.

After we connect in the following sequence: battery - charger.

The laptop must be left off for at least 15 minutes, then turned on.

2. When the laptop is turned on, turn off the charging without removing the battery.

We press the start button while holding until it turns off completely (in most computers until it clicks) for another minute.

After the done, we connect the charging and after 15 minutes, turn on the laptop.

BIOS problem

If none of the above worked, then the problem with the laptop's power management and charging may be due to an early BIOS version.

In this case, resetting BIOS settings will help the owner of the computer. To do this, we perform the following actions:

Turn off the device
We take out the battery
Disconnecting the charger from the network
Press the start key and hold it for a minute
Connect laptop to outlet without battery
Turn on and go to BIOS

Entering BIOS for various laptop models

Acer- keys such as F1, F2 or Del.
Asus- F2 or Del keys.
Lenovo- same keys as in previous cases or F12
HP- you can press the same buttons or Esc.

Other netbook/notebook models use the same keys as described above during boot.

1. Find an item Load Defaults(it's in the EXIT menu).

In this way, you will set the default settings that are optimal for your laptop.

3. Turn off the charging, insert the battery and you can start the computer.

After completing these steps, the system reports correct charging and detection of the battery.

Use the next step if none of the above helped.

Find downloads on the official website of the manufacturer of your brand of computer, in the section "Support" Download and install the updated BIOS version.

Make no mistake with your device model!

ACPI and chipset drivers

You can fix them in the following ways.

The first of them can help, if yesterday your charging was working, but today it stopped, then we follow this algorithm:

We go into the device manager (using the menu, right-clicking on "Start")

In chapter "Batteries" find "Microsoft API Compliant Management Battery" or similar in name, see if it is in the device manager.

If it is not there, then this can indicate both a malfunction and a lack of contact.

Click on it with the right mouse button and select the item "Delete".

Confirm the deletion by clicking OK

After that, be sure to restart the laptop through the item

Crash after Windows update

If the problem with charging occurred after reinstalling or updating the Windows system, then most likely you are missing the original chipset drivers and power management from the manufacturer.

Moreover, the device manager itself may show the presence of installed drivers without updates for them.

In this option, we go to the official website of the manufacturer of your device, download and install the drivers for your laptop model.

To guide you? Here are their names below:

Intel Management Engine Interface
ATKACPI (for Asus)
Separate ACPI drivers

There are also other system drivers. As well as software (Power Manage or for Lenovo and HP laptops - Energy Management).

Power Supply

If the battery is connected while it seems to be charging, but in fact it is not, then you need to try all the troubleshooting methods described above.

Did not help?

Then the most likely cause of this problem lies in power supply failure.

See if the indicator of the unit itself (if any) is on.

When the device does not turn on without an adapter, then the adapter is most likely the cause (but it may be in the connectors or electronic components of the device).

There are cases of malfunction of both the charger itself and the controller on it.

And there are also problems with the laptop connector or battery connector - oxidized or damaged contacts.

These same items are the cause of problems with the adapter even when there are no charging notifications in the Windows system notification area at all.

In this variant, the computer runs on battery power and simply “does not see” the connected power supply.

Extra programs

If you have completed all the previous steps, but you understand that your device is quickly “eating up” the charge, then you need to pay attention to running programs in the background.

To do this, open the task manager by holding the key combination Ctrl + Shift + Esc and analyze the processor usage.

We need to sort those applications from the list that use the processor the most, and watch them for a few minutes.

By removing programs running in the background, we will extend the battery life.

Check battery wear

There are cases when the old battery does not charge, or is not fully charged.

This happens when using very frequent charge/discharge cycles. Thus, the capacity of the battery itself decreases, people say "quickly sits down."

And it turns out that it is very quickly discharged and not fully charged.

The question arises, how to find out the real capacity of the battery and the degree of wear and tear?

You can take the laptop to a service center, or you can try to solve this problem yourself.

First way

Check these options via the command line.

Go to the start menu and at the command prompt type

and press Enter.

Or at the command line enter

powercfg energy

plus the Enter key.

If the system asks for administrator access, then you need to log in with an administrator account

After that, a notification about the operation of the system should appear, and the report will be generated in 30 seconds.

In our version, the system placed it at the address " C:\Windows\System32\energy-report.htm«.

After that, go to the folder with the report, then copy it to the desktop and open it.

After that, in the file that opens, look for the line that contains information about the battery.

We are interested in the last two lines, which are highlighted with a yellow arrow.

New laptop with battery

This is a more significant problem, but before running to the store where you bought it, I advise you to reset the BIOS settings (how to do this is described above)

Be sure to check the markings on the new and old battery.

Pay special attention to the fact that you need to buy a new adapter either with a laptop or take the old one with you.

Repair the battery or buy a new one?

If you know someone who can do this, please contact them.

But you need to understand that this process is very time-consuming, requires considerable skills and practice.

Unfortunately, many companies assure you that they will help you, but in fact they only need your money, and after the intervention of "such specialists" you will have to buy a new battery.

By the way, the cost of such services is often the same price as a new battery.

Today, the electronics market is overflowing with offers.

And you can easily get a high-quality Chinese-made battery, which is not inferior in quality to the original, but at the same time it costs an order of magnitude cheaper.

In any case, do not be discouraged, follow the points in this article.

If on your own you did not manage to deal with this problem, then contact a good service center.

Remember that the battery of the device must be treated with care, as it is a consumable item that can very easily fail.