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Usb ports not working on asus laptop. USB ports do not work on a laptop: what to do and where to run - a detailed guide

Reasons why they don't work USB ports on a laptop, can be both in software and in hardware. Sometimes all ports do not function at once, and sometimes only one or two. Below we will consider why such malfunctions appear, and also tell you what to do for them. self-elimination unless repair of the connector itself is required.

Checking the BIOS Configuration

When a similar problem occurs, the first thing to check is if the USB controllers on the motherboard have been disabled. They may well turn off on their own, and repair of the connector is not required. When the controller suddenly stops working, you can activate it in the BIOS:

Immediately after the start of the download, often press Del, F2, or another function key provided to enter the BIOS on your device.
Look for Integrated Peripherals or Advanced (depending on BIOS version).
Select USB Configuration. Here, opposite the USB Controller lines, the Enabled parameter must be set. If it doesn't exist, put desired value yourself and save the current configuration.

The problem can also sometimes occur due to some USB device that needs repair. To determine it, disable all devices using this port - mouse, USB keyboard, etc. Try connecting a working flash drive. If problems stop appearing, look for a non-working peripheral device.

Working with Device Manager

Through the "Start" or otherwise, go to the device manager. Perhaps one of the group of USB controllers is marked with a yellow icon here. exclamation mark why the device is not working.

You can try to fix the situation in the following way:

Remove the controller marked in yellow from the dispatcher;
Restart your laptop.

At the next start, the system will reinstall all the necessary software, after which controllers that have failed can work again. Sometimes it helps to roll back the OS to a previous state, when all the equipment was functioning properly.

USB may be disabled due to system settings

The laptop's power management can be configured so that the system automatically turns off the USB port after a period of inactivity to conserve battery power. No repairs are required here. In order for the laptop to stop disabling the USB input, it is enough not to allow Windows to change the power settings of the controller, for which:

In the manager, open the serial bus controllers branch, select the USB root hub line.
Double click to open the device, select power management.
Uncheck the box next to the line that allows the system to turn off the connector to save power.

Repeat the described steps for each of the USB hubs registered in the device manager.

Problems with the motherboard driver

Sometimes USB not working problems can be caused by an outdated motherboard chipset driver. The problem is solved by downloading it from a reliable source and then installing it. For this:

If you don't want to bother looking latest version the driver you need, you can simply use the application Driver Pack Solution, which will automatically detect devices with outdated drivers and update them.

When Windows is to blame

Sometimes OS failures are the cause of non-functioning controllers, so repairs are required by Windows itself. In this case, you need to do a reinstallation. But to be sure of the cause of the malfunction and not to do unnecessary work, test the USB ports without loading Windows.

To do this, you can, for example, boot the system from any Live CD. If the ports work as expected in this disk OS, then the problem is definitely in Windows - you can safely reinstall it. If, even when booting from a Live CD, the devices did not work, then the problem should be looked for already in the hardware, it may need to be repaired.

So, most often software malfunctions with non-working USB controllers are solved by updating the driver for the chipset or the system board(which is essentially the same after the north and south bridges on the motherboard were replaced by one chip). Also, the problem often goes away after reinstalling the OS. V otherwise the controllers themselves, the connected USB devices, or the repair may need to be done on the motherboard itself.

It's hard to imagine modern computer, without such familiar to us, USB-port. Thanks to him, the mouse, keyboard, printer, flash memory cards are so conveniently connected to the PC.
It happens that USB connectors suddenly stop working, usually this happens at the most inopportune moment. But do not rush to immediately run to service center and give away a lot of money. Perhaps the problem is at the system level and you can solve it yourself.
Now we will look at some of the most likely causes of the malfunction and how to solve them.

Sometimes it happens that buying new computer directly from the store, you come home, rejoice at the purchase and “use it with all your might”, but when you connect a flash memory card or any other USB devices and, you find that the computer does not see them. This is a fairly common and common problem, you just need to connect USB ports at the system level, through the BIOS. This is not difficult.

We go into the BIOS, look for the section " Integrated Peripherals" or " Advanced» - depending on the BIOS version. We go in and look for the section "", we look for the value "Enabled" to be in the first two paragraphs. This indicates that the inputs are connected. If not, then change the value. After the corrections, we exit the BIOS with saving the settings, restart the computer and check the performance.
It is also worth checking whether the ports are connected to the motherboard, it happens.
If the inputs that are on the front of the computer do not work for you, you should try connecting the device to the rear inputs, which are directly taken out of the motherboard. If this helps, we can conclude that the front USB inputs are not working due to a lack of power, which is transmitted via a loop from the motherboard. In this case, I recommend using such ports only for flash drives, since they do not need in large numbers nutrition. And it is better to connect printers and other devices to the built-in outputs.
If it doesn't help, we move on.

The operation of any part of the computer is regulated by drivers and USB is no exception.

Reboot PC

Endless loading of a flash drive, constantly creeping out the message “Device not recognized” or just no reaction to the connected device? Often, a simple restart of the computer is enough to solve these problems. If there are any errors or damage to the drivers, then after rebooting in automatic mode, the system will restore them to their original form.
Device manager and hardware configuration update.
It happens that you cannot restart your computer right now, due to the execution of some important process. You can restore the drivers through the "Device Manager". You can call it in two ways:
1. Click right click on the label "My Computer" and from the pop-up menu, select "Manage";

2. Select the "Run" function from the "Start" menu. Enter the command devmgmt.msc in the field.
So, we opened the device manager menu. We are looking for the item "USB Controllers", right-click the command "Update hardware configuration". After that everything should work.

Remove "USB Controller"

In our next method, we continue to work with the same menu. If a simple driver update does not help, we will try to remove and then reinstall the same drivers again.
Important! If you have a mouse connected to a computer with via USB connection, then when you remove the drivers, it will stop working after removing the corresponding driver. But don't panic! After a reboot, everything will return to normal.
We open the menu "Device Manager" already familiar to us. In the "USB Controllers" section, select each device in turn, press the right button of the bear and click "delete". Here your task is to leave the mouse at the end, and remove the driver for its port last. After that, we restart the computer. Standard drivers embedded in the system. Therefore, after a reboot, they will reinstall themselves, this should solve the problem.
You can also manually reinstall the drivers. But for this, you first need to find out which driver you need to install. This can be done with the help of software that can show you the necessary information, such as, for example, EVEREST. We look at the port model, download and install the appropriate software.

Port overload

Each USB input is rated for a certain amount of current. If your computer is under a table and for convenience you brought ports to the table through a USB hub, this can cause inoperability. The fact is that the motherboard is programmed to allocate a certain amount of current to power the USB inputs. But if you made six out of one input and inserted a device into each of them, then the motherboard is not able to supply the required amount of current to ensure the operation of all connected devices. The protection is activated and the power is cut off.
First, try turning off all unnecessary devices. If this does not help, unplug the hub and connect the device directly without it. Before doing this, it is advisable to reboot the system.
If all of the above methods did not help to cope with the problem, you should try reinstalling the operating system. It happens that some kind of update comes out on the system, even a small one, and it starts to conflict with already installed drivers.

USB and Windows 10

After updating the PC to Windows 10, it is not uncommon in various forums to report violations of the work USB inputs(and not only, to be honest). This is justified by the "dampness" of the system. The farther from the release, the more fixes came out, including those to fix these problems. Therefore, I recommend that if such a problem occurs, first of all check the system for updates. If it doesn’t help, write to the manufacturer and wait for the problem to be solved.

If all of the above methods did not help, most likely a breakdown in the technical part of the computer. The most innocuous of the options may be getting some foreign object into the port, which prevents the device from connecting normally.
More serious may be damage to the controller of one of the ports or, worst of all, a breakdown north bridge responsible for the USB inputs. If replacing one controller is not expensive, although it is also expensive for laptops, then replacing the south bridge will cost you a pretty penny. The option of repairing it is almost impossible.

The only way out in this situation is to contact the service center.

Sometimes it happens that the work of all ports is blocked by one device connected to the computer. It is necessary to disconnect all devices and try to connect one at a time, while checking their operation each time. It often happens that due to a faulty plug, for example, a keyboard or mouse, it shorts or closes all ports.
Although now this is quite infrequent, it happens that a low-power power supply is installed in the computer, at 300V, for example, the problem may be hiding in it. It is worth trying to replace it with a more powerful one, at least 450-500V. In any case, installing a better power supply will not interfere with the computer in any way.

In conclusion, it is worth noting that problems can be both in the system and in the technical part. If it was not possible to fix the problem, from a system point of view, then without proper knowledge you should not climb under the cover of a computer and laptop and try to solder the sockets, it is better to leave it to trained people in service centers.

In contact with

Some laptop users may find themselves in a situation where USB ports on laptop not working, and devices connected through them are not recognized by Windows. This problem occurs quite often, and can have many reasons, making it difficult for the user to work with the USB devices he needs on the computer. In this article I will tell you why USB ports on a laptop do not work, what are the reasons for this phenomenon and how to fix it.

Causes of the problem when USB ports on a laptop do not work

So, why did the USB ports on the laptop stop working? The reasons for this dysfunction may be as follows:

How to fix broken usb ports

In order to fix non-working USB ports on a laptop, you need to do the following:

Reboot your laptop. It is recommended to turn it off completely, remove the battery for a few minutes, then put it back and boot the operating system again;
Inspect the USB connectors of your laptop, if necessary, clean them from dust with a regular wooden toothpick;
Try connecting your device to a different usb port, the first port may no longer be working;
If you are connecting your USB device via a cable, try changing the last one, this may help with the problem when the USB ports on the laptop do not work;
Make sure that the connected USB device is working, to do this, connect it to another computer;
Go into BIOS and make sure that the USB functions are enabled;
Manually recognize USB devices using the system. Click on the "Start" button, in the search bar type devmgmt.msc and press enter. Device Manager will appear in front of you, click on the name of the list of devices at the top (usually this is the name of your computer), click on the "Action" tab, and select "Update hardware configuration" there. If the system finds the USB controllers during this procedure, then your problem can be solved;
Uninstall and then reinstall USB controllers. Go to the Device Manager again as described above, find "USB Controllers" there, and double-click on this entry. A list of usb controllers will open in front of you, right-click on the first of them and select "Delete".
Remove all controllers in the list in the same way. Then restart your PC, these controllers will be automatically installed by the system again, this can help fix the problem when the USB ports on the PC do not work;
Reinstall USB drivers. Usually, a laptop comes with a driver disk, including a USB driver, it is enough to install it on a computer and the problem will be solved. If your USB connection is highlighted question mark or has the status of "unidentified device", then you need to find out the ID of your device, and use this ID to look for drivers on the network;
If you have several USB devices connected, then try disconnecting them and leaving only what you need at this moment;
Download and run a special utility from Microsoft, it can help fix problems with the UBS if the USB ports on the laptop do not work;
Roll back the system to a previous working restore point. Click Start, type rstrui in the search bar and hit enter. Find a restore point at which the system worked correctly and roll back;
If all USB ports do not work for you, and the above methods did not help, then your south bridge may have burned out. Its replacement (or warming up) is carried out in a service center using special equipment, contact there for advice and help.

Video solution to a situation in which the USB port does not see the device

In this material, I have considered the situation in which the USB ports on the laptop do not work, list the causes of this dysfunction and give a number of tips for solving it. If you don’t know what specifically caused these problems with USB ports, then consistently follow the whole set of tips I have listed, this will help you effectively solve the problem with malfunctioning USB ports on your PC.

USB technology is one of the most important of the many technologies that have had a huge impact on computer world. USB (Universal Serial Bus- "universal serial bus") - a serial data transfer interface for low-speed and medium-speed computer peripheral devices

This technology has made it really easy and convenient work with printers, scanners and external devices data storage (external hard drives, USB flash drives). All actions from USB installation devices reduced to simple principle « Plug and Play". Truly mobile, devices have become precisely because of USB technology. USB ports today are equipped not only with desktop PCs and laptops, but also with gaming devices, smartphones, cameras, navigators and many other devices.

Ports USB version 2.0 provide data transfer at speeds up to 480 Mbps, and the version USB 3.0 raises top speed transmissions up to 5.0 Gbps. The USB symbol is a kind of trident, drawn both on USB devices and on computer connectors.

USB technology has been studied and improved a lot, so USB ports, when used properly, rarely cause any problems, and troubleshooting them is not much of a hassle. This article will outline the basic principles of troubleshooting USB ports.

But before we start, it's worth describing basic recommendations when working with USB ports and devices connected to them:

- never connect devices with visible mechanical damage USB connectors, as well as devices with external damage to the case or with a clear smell of burning.

If the USB ports on the motherboard have mechanical damage, then it is better to disconnect them from the motherboard (connectors in the front of the case) or seal them with colored tape to prevent their use. If possible, it is better to replace such ports in the workshop with new ones.

Try not to overload USB ports. Their current strength is strictly limited: 500 mA for USB 2.0 and 900 mA for version 3.0. Don't try to increase the number of USB ports with different USB multipliers. Modern motherboards already have up to 10 ports, which is quite enough for home use. It is always safer to buy an additional PCI or PCIe USB controller than to work through a USB tee.

If USB ports stop working on a laptop, then work on it becomes very difficult - you can’t connect a printer, scanner, or USB flash drive. And unlike desktop computer, installing an additional USB controller is very expensive.

In many cases, when you receive the error message " USB device not recognized » The problem may be in USB port. This problem is usually solved quite easily, since it occurs mainly at the program level.

What to do if the USB ports do not work?

Any hardware device interacts with the installed operating system across special program - driver. Many problems with devices are solved with the help of drivers. The same is true for non-working USB ports. Below are a few ways to help you troubleshoot USB malfunction ports at the software level.

If USB ports suddenly stop working, and USB devices are not detected, then most in a simple way The fix for this sudden problem will be to restart your computer. Just restart your computer. If there were no problems loading the drivers, then this problem will be fixed after a reboot.

Update hardware configuration in Device Manager

If restarting the computer this moment is not desirable (for example, due to the performance of some important operation), then you can “reload” the drivers without restarting the entire computer via Device Manager. To launch it on the shortcut " My computer» right-click and select the menu item « management e". Or in the menu Start» find the program « Run” and after launching it, enter the command devmgmt.msc.

In the window that opens, left-click once on the list of devices and then click on the tab " Action", then point to " Update hardware configuration". See if the section " USB controllers". If yes, then your problem is solved, USB ports should work.

Another way to get the USB ports working is to disable and then reinstall the USB controller. To do this, you need to run again Device Manager. In the list of equipment that you will see in the window that opens, find the USB controllers section. On each of the devices in this section, right-click and uninstall them all. Once you have removed all controllers, simply restart your computer. The controllers will be reinstalled and the USB ports will be available again. This may solve your problem.

Update USB drivers-controllers

Another reason for USB ports not working is corrupted USB controller drivers. The only way out is to find the correct drivers and reinstall them. To download the appropriate driver, you need to find out the manufacturer of the USB device port (through it). Installing the correct driver should fix this issue in an instant.

Disconnecting other USB devices

Sometimes USB ports don't work because they get overloaded when too many USB devices are connected. USB hubs sometimes do not provide enough power for devices connected to it. The connected device may consume all the allowed power of the computer's USB controllers. If the equipment is connected to a USB hub, simply plug the device directly into a USB port on your computer.

You can also leave the device connected to the USB hub, but first disconnect other devices in the hub. For the future, purchase a USB hub with its own power supply that will provide sufficient power to all devices connected to it.

If none of the above methods worked, then it is likely that the USB ports have been physically damaged. Or the USB controller is damaged, in particular the south bridge of the motherboard. In this case, the best thing you can do is to have the USB port controller replaced or repaired at a service center.

The occurrence of a problem with non-working USB ports is not such a rare occurrence. And considering that half of the modern peripheral equipment connected through this connector, it is practically a disaster for the user.

However, initially it is worth understanding that non-functioning connectors on a computer, or non-functioning USB outputs on a laptop, are two distinct problems that can be solved in different ways.

Simple Solutions for Broken Ports

All equipment works by interacting with the operating system through the appropriate algorithm - the driver. It is possible that the slots do not function precisely because of the occurrence of failures in the operation of these programs. How can you try to fix the problem?

Restarting the computer. Most of the time there is no reason to panic. The crash in the program can be fixed by simply restarting the computer. If there are no problems loading drivers, restarting the system will fix the problem.
Update USB connector configurations in Device Manager. Nothing complicated, you need to click "My Computer", then the item "Management" (or type the command devmgmt.msc in the "Start"). In the window that appears, click on the list of devices and select the action item at the top, and then on “update hardware configuration”. After that, check whether the inscription “USB Controllers” appears in the list of equipment, if it is found, the issue can be considered closed.

Also quite often there are problems with the functionality of the ports after the update. software on Windows 10. If this is the case, it is worth double-checking whether all updates from the developers have been installed.

Setting the causes of failure on the computer and solutions

In the event of a failure in USB operation connectors on the computer, you need to take a series of actions and establish the causes of the problem in order to know exactly how this situation is resolved.

The computer system unit has universal tires in the front of the panel and in the back. In case of failure of the connectors in front, the most probable cause- Mechanical failure.
Also, a possible secret to the failure of the USB functioning may be the incorrect connection of the USB block to the motherboard. For this, 4 wires are used (2 power, and 2 signal). It is worth checking them, perhaps the poles are reversed on the power supply, and the signal ones are installed out of sequence.

In such a situation, you should check the performance of the connectors by connecting a working memory card (flash drive) to the ports located at the back of the system unit. It is forbidden to install workable equipment in the front exits, because if the polarity is reversed, the flash drive will burn! If the rear USB slots work, but the front ones do not, the diagnosis is a violation of the contacts on the front panel of the connectors, or the output itself is broken, or the block of ports is connected to the motherboard inconsistently.

For clarification, it is worth disconnecting the system unit from the power supply and removing the protective covers from it. It is necessary to compare the scheme of the correct serial connection with the situation on the computer.

Attention!

– Connection sequence diagrams may differ depending on the motherboard.

- There is a so-called reverse connection, horizontal and vertical.

– When inspecting, you need to focus on the colors of the contacts and pads, as well as the ratio of their color and the location of the metal pins.

If, after inspecting the correct connection, no violations are found, then it is worth taking a look at the slots themselves. They are black or blue color. In the latter option, if the memory card does not work in it, then the cause of the malfunction may be hidden in the following:

USB output version 3.0 is marked in blue. With all its advantages (power, speed), it has one drawback - after reinstalling the software for it normal functioning you need to install drivers. Or "demolish" the old ones and reinstall them again. You can specify specifically by connecting a USB flash drive to the black connector. If it works, then the reason is in the driver for the USB 3.0 port, and in this case it is best to download the software from the manufacturer's website. Or, as a last resort, do it using the program from the motherboard configuration.

It is also possible that both ports "do not see" installed equipment. In this option, the reason is hidden in the failure of the controller. The way out is the purchase of additional equipment, or rather a USB2.0-PCI or USB3.0-Mini PCIe expansion card. Repair of a particular controller is not economically feasible.

USB2.0 and USB3.0 boards differ in price and functionality. In the first version 2.0 are cheaper, but the speed of the device is lower. The main problem is that the device fits system blocks old models, and it is not always possible to mount them in new equipment that has motherboard MicroATX.

But option 3.0 is more powerful, faster, but also more expensive. However, the hardware cannot be installed in older system units.

This is the basic troubleshooting work in the USB port block on a desktop computer.

Troubleshooting a laptop

Diagnosing problems on a laptop is as simple as on a computer, but repair requires experience and special knowledge.

If the USB ports on a laptop fail, it is best to start diagnosing the causes after reinstalling Windows systems, especially if it's version 10. The whole reason is possible in the incomplete installation of the drivers.

So, you can identify the cause by checking the black and blue slots. The sequence is the same as for a desktop computer. We insert the external media alternately into the blue and black ports. With non-working USB 3.0 (blue) and functioning 2.0 (black), we conclude that it is necessary to install or reinstall the driver.

In a situation where software solutions did not fix the problem, there is still a chance that the hardware is disabled in Bios. You need to try turning it on.

The algorithm is as follows, we reboot the laptop and when it starts, press the F-2 or F-12 key. Bios opens. The next steps are roughly the following:

At the top we find the item Advanced. And in the open list (usually at the end) - USB Configuration. Press Enter and go to the section.
We find the USB Function item and set it in front of it.

On the various models Bios may differ, but the principle of operation is similar.

However, if this did not help, then most likely the reasons are hidden in mechanical breakdowns or short circuits in the equipment. Then the only option is a service center, where either the faulty elements will be replaced or they will be repaired.