It so happens that when you turn on the computer, you suddenly notice that the mouse does not respond to your movements. This can happen with both a wired USB and a wireless mouse. Usually, the reasons for this are cases of the same type and are already known to many specialists. Therefore, we will consider with you all the most popular reasons why the computer does not see the mouse and we will give in the article several solutions that should definitely help you.
First of all, your task is to determine if your reasons for a non-working mouse are not primitive.
Ways to solve the problem with a USB mouse
If the problem occurs with a mouse that is connected via a USB port and the computer does not see it when it is turned on:
- Disconnect the USB mouse connector from the computer panel and turn off the computer. Disconnect it from the mains and press the power button on the computer for a few seconds - in this way you will completely clear the computer modules from the charges, first of all - the motherboard.
- Now turn on your computer and plug in your mouse after Windows startup... The mouse should work.
Now let's fix the problem with the USB mouse using. This method is appropriate when the system does not recognize such a device in the device manager of your PC. To open the device manager, right-click on the "My Computer" icon and select the appropriate item or via command line WIN + R and enter the command "Devmgmt.msc" and press Enter.
You will find the device in the body of the list, it will look like "USB controllers" or "Other devices" ("Unknown device"). If it looks like an unidentified device in your list, then you need to right-click on it and select "Update driver". In this case, the system automatically finds the necessary drivers on the network and installs them without your intervention. After this installation, you can use the working mouse.
If there is an exclamation mark in front of our mouse in the task manager:
Physical breakdowns due to which the computer does not see the mouse
Even the USB connector can become unusable if used carelessly. Check the contacts on the port and in the mouse connector; they may be damaged, bent, or worn out. Although the USB connector is very durable, it could break with active use, and the contacts could also loosen. In this case, you need to contact the service to replace the USB ports with motherboard or purchase a new one.
The mouse cable can also be damaged by any damage that breaks the wires inside the cable. There are cases when pets gnaw them. In this case, the system will notify you with a message - "Unable to connect to the USB port" or. The USB cable has 5 wires, which are not easy to reattach together. This is probably the easiest place to get a new mouse. If the model is expensive, it can be saved in the service. 
In addition to the wire, breakages can also occur in the mouse case itself.
The main faults inside the case:
- The lens surface is dirty, scratched.
- Buttons do not work. The arrow runs across the monitor, but click commands are not executed.
- Defective main board, reader, photocells, etc.
- Wheel controller defective. In this case, there is no way to scroll the pages up and down.
- Unreliable front USB ports. When multiple ports are connected to the board of one microcontroller. It happens that inexperienced users connect several 4G modems and printers to such ports at the same time - if a failure does not happen, then it will definitely happen. Modems will often lose their cellular network and intermittently drop the connection. The same will happen with the printer, it will slow down in every possible way, stop, without printing the document to the end. The USB mouse may not be recognized by the system. As you may have guessed, you need to distribute the equipment to all USB ports of your computer, including the rear panel.
In wireless mice:
USB 3.0 laptop does not see mouse
Laptops under operating system 8.1 often encounter the "USB device not recognized" error. To prevent this problem? It is necessary to change the power scheme of the laptop.
Mouse problems on different devices and versions of Windows
After reinstalling Windows, chipset driver incompatibility may result in mouse failure. In every operating system includes sensor, mouse, touchpad drivers, except MS-DOS. A common cause of mouse failure is a non-working USB driver, the Serial Bus Controller component and the Root Hub. You need to find on the network the version of the chipset that matches the version of Windows OS that is installed on your this moment... Although for 8.1 / 10 versions the main drivers are already provided as system components, it is not necessary to install them separately. 
ACER netbooks, which are provided for by Windows 7 by the manufacturer, when installing the versions above, a problem appeared - the mouse did not work. The problem was in the hardware of the netbook - the Windows 7 chipset drivers did not fit and the following problems arose: the wireless disappeared network connection, the sensor did not work, the mouse did not work (the pointer was in one place). The problem was solved by removing the drivers and restarting the operating system. The devices and hardware were working normally again.
One of the most common mistakes when connecting USB devices to a computer is the inability of the operating system to detect the hardware. The user is notified if this problem occurs. Normal reconnection often does not work, so additional steps will need to be taken to resolve the issue. Let's take a look at them in detail.
First, we recommend that owners of Windows OS version 7 perform manipulations with the device and the computer before proceeding to radical options, because sometimes such advice helps to correct the error. You need to do the following:
- Connect the equipment to the PC through another free connector. It is best to use the input on the motherboard rather than the case.
- Use a different cable if the device is wired. It often happens that one of the contacts leaves and because of this, correct functioning with the operating system is impossible.
- Disconnect other controllers or storage media connected via USB if they are not needed at the moment.
- Reset the charges of the accessories. Remove the idle device from the connector, turn off the PC, disconnect the power supply and hold down the button "Power" for a few seconds, then start the computer. In addition, you can pull out and insert the dies random access memory, preferably in another free slot.
If these manipulations have not brought any results, we advise you to pay attention to the two methods presented below. In them you will find detailed manual to fix the error with device recognition in Windows.
Method 1: Roll back or remove the driver
Most of the time, the problem is caused by a malfunctioning driver. The situation is corrected literally in a few steps, and even an inexperienced user can cope with the process, since this does not require additional knowledge or skills. You just need to follow the following instructions:
To start the renewal software sometimes you need to reconnect the device. However, almost always the whole process occurs correctly without this action.
Method 2: Change power settings
In Windows, you can configure your power plan to get the most out of your computer's power supply or laptop battery. By default, one option is enabled, due to which the "USB device not recognized" error may occur. Disabling it will help solve the problem. This is done easily:
It remains only to reconnect the device to the PC and check its detection correctness.
Problem with USB hardware recognition in OR Windows system 7 occurs quite often. However, as you could understand from our article, it is solved quite easily, it is only important to choose the right method and follow it.
In the work of computer equipment from time to time, various failures and malfunctions may occur. Many users are often looking for an answer to the question: why the USB port does not see the device? In fact, the connection of USB devices to the computer may not be detected by the operating system. Windows system due to an error.
Who is to blame and what to do?
The first thing to start with finding out the reasons for this "behavior" of the system is to check the health of the device connected to the computer. You can use another device for this.
If the error is repeated on another computer, you can conclude that the USB device being connected is the cause. Whether to hand it over for repair or buy a new one is up to you.
One of the reasons for the error may be the presence of bad contacts. The “fault” for this, as a rule, is the long-term operation of wired-type mice and keyboards. Continuously kinking the cable can damage the inner wire and cause this problem.
Very often, the error occurs due to static electricity. USB devices are like storage devices electric charge therefore, when they are connected to computers, an electrostatic field is often generated and the voltage rises. At the same time, the protective system is triggered, and all ports for connecting USB devices are automatically disabled.
How do I fix the problem?
There are several ways:
- First of all, it is necessary to disconnect the computer device from the power supply. If such a problem occurs with the laptop, you must free it from battery... When the above steps are completed, wait 5-10 minutes, return the battery to the laptop, and connect the computer to the network. To your surprise, the ports will work!
- You can use another method to solve the problem. If the error occurs against the background of several simultaneously connected USB devices, you must disconnect them. Then the device that was not recognized must be reconnected to the computer. As practice shows, this method is effective.
- If the above methods did not provide the desired result, you can use another one. One of the reasons for the error may be incorrect driver installation. Disconnecting all USB devices from the ports on the computer can resolve the issue. After that, you need to find Windows 7 C: \ Windows \ System32 \ DriverStore \. and delete the INFCACHE.1 file on your computer.
The next time the flash drive is connected, a new valid file is created with exactly the same name.
We hope that the above information will be useful for you and will help you in solving the problem.
So you connected something to your computer, or just turned it on and saw the inscription "usb device not recognized" below.
What to do? Do not panic, there may be several reasons, but they are all solvable. To find out why the usb device is not recognized in your windows 7 or XP, first check out what it is eaten with.
In simple words, the operating system sees that something is connected to it, but cannot determine what exactly or make it work. These are two main circumstances.
What to do with a usb device
Let's start in order. The first reason is your usb device is not working. To do this, you need to check it. We ate 2 computers very well, but this rarely happens, so we go to a friend, take a laptop or netbook from him and check if the error "usb device is not recognized" will pop up there (if it is not big, then we carry it to our friends).
Find another one or try if it is possible to connect other devices through it. As before, we believe that the result is positive, it did not bring.
I do not want to rewrite, but at first (before contacting friends) I had to draw your attention to the operating system, in most cases it is it that is guilty that your usb device is not recognized. Disable it and enable it again, or reboot the computer. This usually helps.
The second reason is the driver. If there are no corresponding ones, your usb device will never be recognized. How to fix this problem is described in detail in the article. Therefore, I will not describe this issue here, but go straight to the next point.
At the bottom of the screen, the inscription usb device is not recognized, it must appear if the USB port or controller on the motherboard burns out. It is better not to stick your hands into the motherboard yourself, but the port can be replaced. Just make sure that he was the cause. However, it is easy to check, use another, today PCs with one port are not produced.
Rare reasons why a usb device is not recognized
Sometimes the culprit for not recognizing the usb device may be the BIOS. The entrance to it is not the same, it depends on the manufacturer. The most common f2, Del or f10. Only you need to press these keys immediately after switching on, otherwise it will not work.
So you are logged in. At the very top, press "advanced" (in the BIOS, press "enter" and the transitions "arrows"). Next, find USB configuration. Now look as shown in the figure, only if this option does not help, return the settings to their previous position. The settings are saved by pressing the F10 key.
The largest number of errors is the usb device is not recognized, it occurs with flash drives, modems and printers. Sometimes the controller driver may fail, then do the following:
If that doesn't work, there is another option. Click at the very bottom on the left side of the start and at the very bottom (find the program files) insert this text: eventvwr.msc, the utility will appear at the top, click on it and you will see the event log, which describes everything that happened with your PC (in it always fixes and records everything: errors, malfunctions, and the like)
First, on the right side, click "Windows log", then "system" and look at the top of the large window for "information" marked with a red icon (there is no red in the figure).
Then click on it and read what happened below. In this way, you can find out the exact reason why the usb device is not recognized and what to do.
Surely, many users, when connecting a USB drive, third-party hard drive or some other equipment, could see a notification on their screens that an error occurred and USB device not recognized. It can happen to everyone latest versions Windows operating systems and manifest with USB 2.0 and 3.0. The fix for this error is quite simple.
There are a huge number of reasons that contribute to the appearance of an error when the operating system does not recognize the USB flash drive. In addition, there are also quite a few options for fixing the problem. It is worth noting that the methods for solving the problem are individual for each method, so they may be suitable for someone, but not for others.
First manipulations when the error "USB device is not recognized"
First of all, if there is a problem with connecting a USB drive, printer, mouse or keyboard to the PC, you need to check the operability of the device itself.
In this case, you should try to connect this USB device to a third-party PC or laptop, if possible, and check its functionality. If the device does not work, then it is safe to say that it is the device that causes the error, and there is no point in looking for other reasons. In this case, you need to check if the USB device is connected correctly. You can connect it to a different port, and if this does not fix the error, then you need to check the drive itself.
In addition, there is another option that can be applied. It will be suitable if the device worked correctly up to this point. It can also be used when it is impossible to use the first method.
In this case, you need to disconnect the drive, which the computer does not recognize, and turn off the PC. Then you need to unplug the power cord from the outlet, press and hold the power button of the computer for a few seconds. As a result, all remaining charge will disappear from the motherboard and all elements of the computer.
In addition, there is another way that will help much faster than everyone else. If a stationary computer is used and a lot of different equipment is connected to its front panel, it is necessary to disconnect some of them that are not needed at the moment, and connect the device that is causing the error to the back of the PC. This may help fix the problem and no further action is required.
It is worth noting that if the USB device has its own power supply, you need to connect it or make sure it is connected. In addition, it is necessary to check the functionality of the power supply.
USB Device Manager and Driver
Also, to fix the error when the USB device is not recognized by the PC, you can use the device manager of the seventh or eighth version of the operating system. This option involves several methods of eliminating the problem at once, which may work in a specific situation, or maybe nothing will work.
The first step is to go to the device manager. This can be done very in a simple way... You need to press the Win + R combination on the keyboard and in the Run window write devmgmt.msc, then press Enter.
In most cases, the unrecognized device can be located in two departments of the dispatcher. This could be USB Controllers and Other Devices. The last item may be called "Unknown devices".
If "Other Devices" displays unknown device, then you can connect to the network and right-click on it. In the drop-down menu, you need to specify "Update driver". In this case, the operating system can independently install everything you need. If this does not happen, you can try to update the drivers yourself.
If the unknown device is in the USB Controllers list and is marked with an exclamation mark, then there are a couple of things you can do. It is required to right-click on the device and select "Properties" from the menu. After that, in the "Driver" section, you must click on "Roll back", if possible. If this does not work, then you need to eliminate the driver by clicking the "Remove" button.
Next, you need to click on "Action" in the device manager. Here you should select "Update device configuration" and check if the PC recognizes the USB device.
In addition, you can go to the parameters of each USB device named Generic USB Hub, USB Root Hub, and in the Power Management section, uncheck the box next to “Allow this device to be turned off to save power”.
If this did not bring the desired result, then you can try another method that can definitely be useful for the G8. For all devices connected to the PC, several manipulations must be performed in order.
You need to click on each PCM and indicate "Update drivers". After that, you should specify "Search for drivers on this PC". Then you need to click on "Select a driver from the list of already installed". This list should show a compatible driver.
After that, you need to select it and click "Next". This will start reinstalling the driver for the USB controller to which the device is connected. This may resolve the error.
USB 3.0 devices are not recognized in Windows 8
On laptops with Windows 8 operating systems, such errors are quite common. It mainly manifests itself for drives using USB 3.0.
You can get rid of this problem by changing the settings of the laptop power supply circuit. You need to go to the "Control Panel" and select "Power supply". Here you need to find the applied scheme and click "Change advanced power settings". After that, in the USB settings, you should deactivate the temporary shutdown of USB ports.
These are the main reasons and methods for eliminating the problem when the system does not recognize the USB device. Surely one of them will be suitable for fixing the error.