Why is the USB port of a computer or laptop not working??
The main reasons for the termination of the USB port:
- Incorrect BIOS settings.
If you cannot enter BIOS because the USB connector is not working, use a keyboard with a PS / 2 plug. To fix this error, you need to go to BIOS. Advanced. Now open the subsection Onboard Devices Configuration. It contains the settings that are responsible for the functioning of USB controllers. If they are in a disabled state, enable them.
- Lack of connection to the motherboard.
Often the contact in the computer can SIMply move away. Any shaking and, moreover, an unexpected fall of the device can cause the connection to break. Check if the USB1 and USB2 connectors are securely connected.
- Cable damage.
It is possible that the reason the computer cannot identify the connected USB device is that it is itself damaged. In most cases, this is due to cable damage.
- Lack of electricity.
Any electronic equipment requires a certain power supply. If there are too many devices connected to your computer, there is a possibility that they all SIMply do not have enough electricity to function properly. Therefore, try to disable unnecessary devices at the moment and check the performance of the priority device.
- Device Drivers.
One of the most important aspects of the normal functioning of devices is drivers. Often we either completely forget or update every five years on holidays. Therefore, if you encounter a non-working USB device, we recommend trying to update the drivers for it.
- Damage to the controller.
This is perhaps the most difficult and unpleasant outcome for any user, since he forces him to spend a certain amount on repairs. If the USB controller on the motherboard has been physically damaged, the problem cannot be fixed.Otherwise, except to send the board for repair to a service center.
Checking for mechanical damage
Before proceeding with more complex techniques, we recommend that you pay attention to the physical state of the port. Connect the USB cable and gently slide it in the connector to set the degree of “looseness”. If you do not know the standard degree of density of the nest, first check the working.
A sufficiently high freedom of movement inside the port means that it is loose and requires replacement.
The main thing is to remember, DO NOT make sudden and strong movements, since there is a high risk of damaging a healthy port, and you will not find the real cause of the breakdown.
Related articles about data recovery:
Replacing damaged equipment
If none of the above methods can help you, chances are high that the USB port was irreparably damaged. The only thing that can change the situation is to replace the connector at the nearest service center.
We hope this article was helpful to you and helped to get your USB port back into working order.
Restart your computer
In rare cases, the operating system may SIMply not notice the newly installed hardware. Therefore, to fix this error, restart your computer. Windows will re-scan the list of connected devices and display the USB flash drive or external hard drive you need.
Option to temporarily disable USB port
The option to temporarily disable the USB port is a Windows tool that allows your computer to improve battery life. This is especially true for laptops. Thus, the operating system temporarily stops supplying power to the USB port, which has been idle for a while. To restore stable port performance, you need to follow one of the following two instructions:
Method one. Power Options.
1. Open Windows Settings with the keyboard shortcut Win I.
2. Go to the System section.
3. Go to the Power Sleep subsection.
4. Scroll down the page and in the Related options section open Advanced power options.
5. Select the power plan you need and go to the power plan settings.
6. Go to Change advanced power settings.
7. Find the USB Settings section and expand it.
8. Now open the subsection The option to temporarily disable the USB port.
9. Change the values for Here batteries and Plugged in to Disabled.
10. Click Apply and OK to confirm the changes.
Method two. Registry editor.
When working with the registry, it is important to remember that the health of the operating system directly depends on its state. Never and under no circumstances should you make rash changes to it. Therefore, before proceeding with this method, we strongly recommend making a backup copy of the registry.
1. Open the Run utility by pressing the Win R keys.
2. In the dialog box, enter the regedit command and press Enter.
3. Go to the following path:
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ USB \ DisableSelectiveSuspend. If it is missing, you will have to create it manually.
4. Create a new DWORD (32 bit) value.
5. Name the parameter DisableSelectiveSuspend.
6. Click on the key with the right mouse button and click Change.
7. Set the Value to 1 and click OK.
Check if your USB port is working.
How to repair a USB port
This section deals directly with hardware and its software. Very often, devices cannot function normally because a driver failure has occurred or the controller has stopped working correctly. We have prepared for you two ways inside the Device Manager utility, which will help you quickly return the USB port to working condition.
1. Open Device Manager. You can do this as follows: Right-click on the icon My Computer Computer Management Device Manager.
An alternative way, and perhaps more convenient for some, is to open the Run utility, in the dialog box that opens, enter the command devmgmt.Msc and press Enter.
2. Open the USB Controllers section. It must have two controllers named Intel (R) 7 Series / C216 Chipset Family USB Enhanced Host Controller. Depending on the manufacturer, the names may differ, however, the part of the USB Host Controller must be identical.
3. Now Click on the Update Hardware Configuration icon.
4. Restart your computer.
An alternative way is to remove these two controllers before the next restart. This will allow the Windows operating system to independently make the necessary settings before starting.
How to improve the performance of a USB flash drive in Windows
What to do if the performance of a USB drive drops before our eyes or it turns out to be slow at all.
Computer can’t see tablet via USB? No problem!
Evgeny Kryzhanovsky welcomes everyone! Today you will find out why the computer does not see the tablet via usb and not only. There may be several reasons why the computer does not see the tablet connected via USB. However, hurry up to contact a specialist, and try to check yourself what the problem is.
One of the reasons may be a defective USB connector on the computer or damaged wires. The tablet “cannot be read” also due to the lack of installation drivers on the PC or the connection parameters to the computer are NOT set on the tablet.
So, what can we do on our own in this situation? It will be necessary to check the health of the connector, the integrity of the wire, software and tablet settings.
Now let’s take a closer look at each item.
- Checking the USB connector.
In the tested connector, insert any device that you are sure of working order (for example, a working USB flash drive or mouse). If the connected devices are functional, the connector is working.
- Checking wire integrity.
You should do the same with the manual. connect a working device through it (for example, a mobile phone).
- Checking for drivers.
Proceed to this point if the first two reasons do not have grounds.
The computer does not see the tablet via usb. more solutions.
If the computer does not see the tablet via usb, then it makes sense to go to the “Device Manager” (in the “Computer Properties”) and connect the tablet. If the software appears in the list, then right-click on it and select “Update Drivers”. An internet connection is required for the process to run. Alternatively, you can insert the installation disc that came with the tablet.
If, after connecting the tablet to the computer, a “!”
- Or lack of software,
- Either driver problems.
- It is recommended to update them or install new ones.
- This will help the Internet or the installation disc.
- Pay attention to the tablet screen.
Some devices require a special mode to be set when connected. On the offer to connect, click “OK”. Or if the question did not appear on the display, then you can disconnect the tablet from the PC and go to its settings. The USB connection mode may not have been specified.
- Contacting specialists.
On a note! I would like to ask you to read articles on the topic of why it slows down on the Internet, or how to sync iPhone with computer. And I also told you how to turn on bluetooth on the computer, read it without fail.
I really hope that the problem when the computer does not see the tablet via usb will no longer be a prerequisite to change it to a new device. Do not forget to ask questions in the comments, and also likes the article. I wish peace to everyone!
Why the computer may NOT see the e-book
There are a number of reasons why there may be no connection between a computer and an e-book, and experts usually divide them into two large groups:
- Hardware, when the cause of the problem lies directly in the “stuffing” of a device;
- Software, when problems occur due to problems with the software of a laptop, computer, tablet or the device itself.
First of all, it is worth checking the condition of the cable through which the e-book is connected to the device. Most modern readers are equipped with a mini-USB cable, and if there is another SIMilar cable in the house, you should try to connect the book through it. In addition, it will be useful to check the cable entries both on the computer and on the device itself.
REFERENCE! If there are doubts about the serviceability of the port, you can select an input that is definitely working (for example, the one from which the keyboard works) and try to connect through it.
Sometimes the computer “does not see” the book SIMply because it is completely DISCHARGED. The solution in this case is SIMple. charging the reader. In addition, many computers may NOT see the e-book because too many ports are SIMultaneously used for different devices. Most modern keyboards, mice and other devices work precisely through USB-inputs, sometimes we “overload” the system.
REFERENCE! If a computer is equipped with a large number of ports, This does not mean that all of them can work at the same time.
The computer does not see the e-book
Modern e-books are becoming an increasingly attractive alternative to paper editions in the eyes of literature lovers. Over time, in the process of improvement, they acquire more and more useful functions and are equipped with more modern software. However, like any other technique, the e-reader is not immune to minor malfunctions. Sometimes their owners are faced with a problem when the computer to which the device is connected, but does not recognize it. This article will discuss the main causes of these problems, as well as tips for self-fixing.
What to do if the computer does not see the e-book
For users, and those who do not have deep experience in the repair of computer equipment, there are only a few operations available to self-troubleshoot the reader. In addition to the above methods, the user can:
- Reboot device. You must first pull out the USB cable from it. This can help you get rid of minor software bugs that inevitably occur during work. On some models, the developer does not provide a restart button, and you can restart them by pressing and holding the power key.
- Update drivers. In order to do this, you need to call the control panel on the desktop and go to the “Device Manager”. Among the proposed list of devices, you need to find an e-book, then right-click on it and select the “Update drivers” function. If this does not help, you should select the “Delete” item, then turn off the device and restart all equipment.
- Try to connect to a second device. This SIMple step will help you understand the root cause of the problem. It often turns out that the reader cannot be seen by only one computer, and on the rest of the device data is read normally.
If all the actions listed in this material did not help to fix the problem, you should contact the equipment repair service. Experts will be able to quickly and accurately identify the existing malfunction and return the device to full operation.
The computer does not see the e-book
Modern e-readers are becoming smarter, some models are even equipped with Wi-Fi, thanks to which you can download books from the Internet. But it is still more convenient to download books from a computer by connecting the reader with a cord. However, it happens that the computer does not see the e-book.
If the NDT does not see the e-book, there can be quite a few reasons for this, but they are all divided into two main groups: Hardware and software. Hardware reasons are related to hardware malfunction: the problem may be in the cable or connector. Software reasons are associated with a malfunction of the computer software or e-book.
First, try to rule out hardware problems by checking the integrity of the cable and connector. Carefully inspect the connector and cable for damage. it may be visible to the naked eye. If you have a different cable, try connecting the e-reader with it (many readers are equipped with standard mini-USB cables, so you can try a cable from a second device with a mini-USB connector).
It is also worth checking the USB ports of your computer. For example, if you connected an e-reader to a port on the front panel, it may SIMply lack power, in which case you need to connect it to one of the rear ports. The same happens if you connect the book via a USB extension cable. Or the port may SIMply be faulty, so you need to try any other free port.
If the e-reader is completely discharged, the computer may NOT see it. Therefore, you must first recharge the book, and then connect it to your computer. If the book comes with a charger, there will be NO problems with this. For a USB-charged book, a dedicated USB charger can be purchased separately.
Another possible reason that the computer does NOT want to see your reader is that there are too many USB devices already connected to it. If a mouse, keyboard, USB speakers, a camera and a heated mug are already connected via USB, then the computer SIMply will NOT pull the book. If there are many USB outputs in the system unit, this does NOT mean that all of them can be used SIMultaneously.
Sometimes a prerequisite for the computer not seeing the e-book may be a “glitch” in the book’s firmware. First, try turning off the book and turning it on again. If the book has a sleep mode, it should be turned off, and not put into this mode. If the book freezes when connected (this also happens), you can try to restart it using the Reset button, having previously disconnected it from the computer. In some models of books, NOT a separate button is responsible for restarting, but a long press of the power button. And just in case, restart the computer too. you definitely won’t make it worse.
Also, the problem may be in the drivers. To test this guess, go to Control Panel, and in it. Device Manager. In the manager, you will see a list of devices, find the e-book in it. Right-click and select Update Drivers from the context menu. If updating your drivers doesn’t work, select Uninstall. Then unplug the e-book, restart your computer and try plugging it back in.
Finally, try connecting the e-book to a second computer. If it turns out that only your computer does not see the e-book, and everything is fine on the rest, then the problem is in your PC, and the book is NOT to blame for anything. If other computers also refuse to see the book, then the problem is with the book, so it is worth taking it to the service: experts will identify the “culprit” (it can be firmware or hardware) and fix the malfunction.
Reinstall the latest Windows 10 Kindle software.
Reinstalling the latest Kindle software for Windows can also help you fix your problem. For this:
- Go to Settings and tap Apps features.
- Find your Kindle software and click Uninstall.
- Reboot your computer
- Go to the Amazon downloads page. To download and install the latest Kindle software for Windows 10
Why is my computer NOT finding my Kindle?
Try using a different USB port and / or a different USB cable
We must first check and make sure that there are no physical problems with your computer’s USB port or USB cable, so that they are NOT damaged.
You can check if the USB port is working. By connecting any other device to it. It could be a webcam, another phone, or a tablet. If the other device is automatically recognized on the port you plug your Kindle into, then you know the port is working, although Windows may only recognize one device on the port. Try Kindle in every USB port.
Mini cable USB cable. The supplied Kindle may also be the source of the problem. If the cable is damaged, Windows Media will not be able to recognize the device because no information about what you are connecting will be sent to your computer. Try connecting other USB cables to your computer. You can also try other USB cables that come with your smartphones.
- RELATED: USB not working on HP Envy laptops? Here’s how to fix this problem
Some users reported that when they encountered this issue, it helped charge their Kindle for over 30 minutes and then performed a hard reset.
Use Caliber to connect
You can use Caliber to connect your Kindle to your PC. Turn off your PC and Kindle and disconnect all connected cables. After turning on your computer, open Caliber and connect your Kindle to your PC. Turn on your Kindle now and see if the connection is successful.
Install the Kindle driver
If your computer is unable to detect the Kindle, it may be because the Windows 10 Kindle driver is missing or the setup has failed. In this case, your Kindle is missing. You will see a device with a yellow exclamation mark, or an MTP or USB driver with an exclamation mark in the Portable Devices section of Device Manager. So try updating your Kindle driver to fix this Kindle which is NOT showing
- Open Device Manager. Expand Portable Devices. And you will see your Kindle or MTP device.
- Right click on your Kindle or MTP device and select Update Driver Software.
- Choose the second option: Browse my computer to find drivers.
- Select the bottom option: Let me pick from a list of device drivers on my computer.
- Select the Show compatible hardware check box. And the desired model will appear. Select your USB MTP device here and click Next.
- In the driver update warning window, click Yes. Windows will install a compatible device driver for your Kindle
- RELATED: Fix: Windows Setup was unable to install one or more boot-critical drivers
What to do if your computer does NOT recognize your Kindle
The Amazon Kindle Reader started out as a SIMple e-book reader but has evolved over time. As with any tablet, you may occasionally encounter problems connecting the device to your computer, as well as in some cases when it is NOT displayed on your computer at all. There are several solutions to let your computer see your Kindle device, and we’ll go over each of them:
Perform a hard reboot
Like most tablets and smartphones, the Kindle has a built-in reset function that clears its memory and reboots the operating system again. sort of like restarting your computer. Restarting your Kindle may fix software issues that may prevent your computer from recognizing your device.
To restart your Kindle, leave your device connected to your computer, press and hold the power button for about 40 seconds, or until the device automatically restarts. If your device automatically reboots after 40 seconds, release the power button. If your device does NOT automatically reboot after 40 seconds, press the power button to turn it on.
- RELATED: 5 Best Interactive Ebook Software [2018 Guide]
My computer can’t find my Kindle
Why the computer does not see the phone via USB, but is charging
The computer does not see the phone via the android usb but is charging. Sound familiar? Or did the first connection experience fail? Let’s try to find the cause of the problem and fix it. NOT considering situations with breakage / gnawing / trampling and other damage to the cable, where everything is unambiguous, few can restore them, and so that everything works as it should. Risky economy “on laces”, often harmful, sometimes dangerous. for batteries, for example. For anyone, whether you have a latest model iphone, a business-like Galaxy a5 or an inexpensive fly in a budget version. Broken ports, flooded, clogged crumbs, or SIMply loose connectors are mentioned less often than they become a cause of the problem. He only carefully cleans them, dries them thoroughly, and if they are broken, contact the specialists, if there is a guarantee, only to the service center.
Often the reason “why the computer does not see the phone via usb Android, only charging is in progress” lies in the “hardware”, and not only breakdown is likely, Possible unstable work, incorrect connection. For instance:
Have you seen cheaper cable options where the design does not provide for data transmission? L. The advice to replace with a quality one remains the most effective. (Not necessarily the original from the manufacturer, but a certified “lace” made in compliance with the standards is always better than “no-name”).
The idea of extending the cable with an additional cable or connecting a device via a USB hub often helps, but not when transferring data. Try connecting directly, it often helps.
Port is wrong version
If the phone is connected to USB 3.0, try to find the 2.0 port.
Cable or connector out of service
Replace with working ones or bring to working condition.
If you have any questions. Let us know Ask a question
Resetting your phone as the last method
This is a Cardinal method: a lot of information is deleted, including an address book with contacts, programs with local settings, etc., multimedia files “survive” only if they are stored on a separate card. But if there is a backup copy of the content, and there is a second way to transfer data from the phone to the PC, it may be worth the risk. How to enter this mode is usually written in the documentation for your phone, the same instructions can be found on the manufacturer’s website.
information about how the reset works, what purpose it is used for and what errors should be avoided can be found in this
If the “last method” does not help either, you may need to contact the service center for flashing.
Computer virus as a possible cause of the problem: check and fix
Yes, the result of the “work” of viruses can be like that. If yesterday everything worked with a bang, but today, the computer does not see the Android phone via usb and charging is in progress, it will be useful to launch at least the popular CureIt DrWeb, Awast, McAffey. The names of other antiviruses are in the “Good Council” on freeing the PC and phone from unnecessary programs.
True, the result of the treatment is not always successful, in SIMple cases on Windows it is sometimes necessary to remove the phone from the system (by killing the drivers), reconnect it again, Installing the C driver from an unaffected source. the manufacturer’s website. In more complex ones, you will need to edit the registry, but here too much depends on the device model and the virus itself for specific recommendations. But the authors of antiviruses give advice on how to fix the consequences of the most famous “malware” and post it on their websites, Kaspersky, for example, does this.
Checking connection settings
The second thing to do if the computer does not see the phone via usb but is charging, and the cable and port are normal, is to check the settings of the smartphone itself. In recent versions of Android, the phone connects in “charge only” mode by default. Sometimes it is enough to change it to the desired one: MTP / USB storage mode, depending on the capabilities of the phone, for example:
A few words about popular phone connection modes at different times:
MTP. Media Tranfer Protocol, if enabled, all contents of the phone can be seen from the computer.
PTP. Picture Transfer Protocol, as a rule, gives access only to individual folders in the phone, does not require installation of device drivers. Advice without a guarantee: if you have no time to understand the reasons, but you urgently need to transfer a file to a PC, you can SIMply move it (copy it if space allows) to the folder that the computer “sees”.
Modem mode is an infrequent option, a likely reason for PC “blindness” and incorrect device recognition. Disable it in the menu.
The complete scenario for changing the connection mode using the example of a Lenovo phone is below:
Checking for drivers
Drivers of connected devices are usually found automatically by the system, but a different approach often works with smartphones.
If the drivers are installed manually
Download the latest drivers for the required model on the manufacturer’s website. In the “Program Manager” we check that such drivers or their earlier version are not installed on the PC. (If installed. uninstall via the program manager and restart). Then connect the phone (the shamans say to a different port) and install the drivers. If the problem was in the old version of the driver, we observe a successful connection.
If the drivers are installed through the system
We launch the device manager and observe an unidentified or non-working connection. Something like this:
Ideally, a driver update is sufficient.
, where the very principle of installing a “theoretical” driver through the device manager is meticulously shown:
But if the system downloaded the driver, it may not be able to recognize it?
A device driver can be manually “assigned”:
The device is selected forcibly:
Like its driver
If the build of Windows is no surprise, we get the long-awaited confirmation.
A special case and common cause of errors common on earlier versions of Windows and on some builds of Windows 10 is the lack of support for the Media Tranfer Protocol (MTP). The system issues a message about this error when the gadget is connected in something like this:
An installation supporting this protocol is available for free on the Microsoft website.
The laptop does not see the phone via USB but it is charging: Possible reasons
To begin with, it is worth trying to determine whether the PC (laptop), phone, cable, port is “guilty”? If it is possible to connect another phone on a computer, laptop or netbook (yes, using the same cable and port), you need to look at what is in the settings of the problem phone. And vice versa: if the phone connects and exchanges data with another PC, you should start from the computer. But if such experiments are difficult, then an attempt to check the connection of the smartphone to the second port without changing the cable, and then with a different cable to the same port, will show an obvious non-working link. Otherwise, check everything.
Almost all major smartphone manufacturers have developed software to synchronize their mobile devices with a PC. Such software takes into account the peculiarities of the equipment and ensures reliable connection and file exchange. Nokia PC Suite for Nokia Lumi and other models of this brand, Samsung Kies, Huawei HiSuite for Huawei, ASUS Sync, LG PC Suite, HTC Sync Manager, ZTE Blade. and these are just the most famous. Synchronizer for Xiaomi is called Mi PC Suite. And even if the relevance of developments, for example, for “Lenovo” raises questions, there are universal applications.
Are they perfect? Not a fact, but usually successfully perform what they are written for, and not puzzling the user: they allow you to exchange files, backup contact lists and messages on the computer.
Each application is accompanied by instructions on what to do in case of problems. but it seems that their common cause is errors in the settings of the system or devices from the PC side or the wrong choice of the connection type from the smartphone.
This is an example of solving the problem with connecting the meizu m3, an illustration of the typical question “why the computer does not see the phone via usb but is charging” and solutions “for healthy iron”.
What else can you check
If the laptop does not see the phone via usb, but you are NOT ready for drastic measures.
Disconnect the phone, remove / insert the battery, turn it on again. This is not shamanism, but a quick and drastic way to really turn off and then turn on the device. Abuse is not worth it, but it helps more often than is commonly believed.
Password protection of the phone. While connecting to the laptop, your smartphone must be active. Enter the password, and when you get up to do it regularly, you may want to remove the password protection.
Accumulator charging. If both the laptop and the phone work “half-heartedly”, then it is likely that the devices will be turned off in saving mode.
In the properties of the USB port, uncheck the box that allows you to disable it in order to save:
Memory card in the phone. Windows needs a recognizable FAT32 / NTFS file system without glitches / holes / unrecognizable names in indistinct encoding. It is from here that the true stories about the phone come from, which was perfectly visible in the “unconscious” state, but “disappeared from the visibility of the laptop“, it was worth inserting a memory card with some cleverly named folder. It may be possible to read it using card readers separately from the phone.
Carefully Study the “folk methods”. but it is worth using them only if the solution is needed “soul out”, comments are guaranteed, and the masters backed down. An informal solution to a difficult situation can be found. Example: “The computer does not see the phone via usb, but it is charging. Xiaomi redmi 4x ”is worth watching to the end. We draw attention to the words that the indicated configuration timeframes turned out to be empty, if there is data there, you will have to delve into the details and probably look for other options.
All advice. by, but the Internet on the smartphone is there, and you need to transfer files urgently? We’ll have to “loop through” the file storages. Google or Yandex drive, OneDrive, DropBox. a lot of options. Or install software like AirDroid or Pushbullet on your computer. If the Internet is available. in addition to USB, there are still Bluetooth or Wi-Fi connections.