"usb device not recognized" error

USB device on your computer is malfunctioned or not recognized in Windows 10/8/7/XP? No worries. This guide provides 7 solutions to troubleshoot "USB Device Not Recognized" issue and you can try them one by one until you can open the device và access your data.

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Symptom of "USB Device Not Recognized" error Solution 1: Try a different USB portSolution 2: Rescan device in Device ManagerSolution 3: Remove computer power supplySolution 4: Update USB device drivers Solution 5: Fix USB root hub Solution 6: Uninstall hidden devices Solution 7: Disable USB selective sầu suspover settings How khổng lồ retrieve data from malfunctioned or not recognized USB device? Conclusion

Symptom of "USB Device Not Recognized" error

"Can anyone here help me with this troublesome error message which keeps popping up on my screen? It appears every time I insert my memory card which is connected via a card reader. This error had never appeared before I installed some system updates yesterday. The error message says the USB device not recognized và one of the USB device attached lớn this PC has malfunctioned and Windows does not recognize it. It is true that the memory card does not show up in This PC. I tried a different card reader & still get the error! Could you please tell me how to repair this crazy problem?"

Sometimes when you insert a USB device to your Windows PC, you may receive sầu a "USB Device Not Recognized" error message which pops up in the right corner of taskbar. When the error appears, the USB drive sầu does not show up in File Explorer, which means you cannot access files in the device if it is storage device. What"s more, this issue does not belong lớn a specific version of Windows & it may happen to all current versions of Windows. This is one of the most comtháng errors on USB devices and it usually drives users lớn frustration. Here is the exact nội dung of the error message:

In Windows 7 and Windows Vista, the error message says "USB Device Not Recognized. One of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it. For assistance in solving this problem, cliông xã this message." In Windows 10 và Windows 8, the error message will be "USB device not recognized. The last USB device you connected khổng lồ this computer malfunctioned, and Windows does not recognize it."


If you click the message box, you will get a window which gives a recommendation "Try reconnecting the device. If Windows still does not recognize it, your device may not be working properly." If you kiểm tra Windows Device Manager, you can see a yellow alert ibé tagged the device; and the device is shown as Unknown Device under Universal Serial Bus Controllers.

Windows operating system is designed to be compatible all kinds of PC accessories, especially USB-based add-ons such as USB flash drive sầu, external HDD, microphones, webcams, game controllers, etc. Most such peripherals work out-of-the-box, but in some cases, the unrecognized error occurs. This error is quite comtháng and has been talked about on various forums và communities. No matter what version of Windows you are using, you are lượt thích to lớn get this error more than once in your lifetime.

In fact, there is not exact or specific cause that accounts for the issue, and we have khổng lồ identify the problem và try sorts of approaches to lớn solve sầu it. Thus this problem can be a big headabịt. However, that does not mean it cannot be fixed. The following part provides a couple of the most effective sầu solutions that can help you get rid of it.

Solution 1: Try a different USB port

First & foremost, you should make sure there is no problem with USB port. You can disconnect the USB device which cannot be recognized by Windows & then reconnect it via a different USB port. Do not connect USB device via USB hubs. In many cases, the "the last USB device you connected to lớn this computer malfunction" error is just temporary, and changing a USB port should get rid of the error.

If your computer is a desktop, then you can also try connecting the USB device khổng lồ computer via the USB port on the baông chồng of the case. Those USB ports placed at the baông xã of computer case usually have better power supply. Besides, you can try the USB device on a different computer & check if the error still appears.

Solution 2: Rescan device in Device Manager

There are some cases that the USB device not recognized is caused by operating system conflicts, which can be solved by rescanning device.

Step 1Log into system with administrative trương mục & open Run dialogue via pressing Windows and R keys.

Step 2Type "devmgmt.msc" in Run box & press Enter key, which opens Device Manager.

Step 3 In Device Manager clichồng Action thực đơn & select "Scan for hardware changes" option. Then system will try khổng lồ connect to lớn any new devices connected khổng lồ your PC. If your USB device still cannot be recognized after scanning, you should go on trying other solutions.


Solution 3: Remove computer power supply

This is a super easy solution! If this solution works, you"ll save sầu a lot of time. Unplugging computer power supply does not mean simply turning off computer with power button. That"s because most computer does not actually shut down completely and motherboard still gets power. Thus, you need lớn remove sầu power from máy tính or unplug power supply from the bachồng of computer case.

Motherboard is the very place where all hardware is connected, including USB ports. Sometimes the motherboard should be rebooted when things go wrong. When power is removed, the microprocessor on the motherboard will reload drivers for USB ports, after which the USB device might be recognized again. Therefore, you can try shutting down computer và remove power supply for a while, và then plug it back & restart Windows.

Besides, the USB not recognized issue in Windows can also be caused by a dirty or loose RAM. Thus, after removing power supply you can manually remove the RAW và clean it. Cleaning RAM can also help a bit in improving tốc độ.

Solution 4: Update USB device drivers

USB devices are connected to computer via USB port, via which they become able khổng lồ communicate with host controllers on motherboard. And the process is managed by driver software. Drivers are responsible for being an instruction which can be read by computer khổng lồ interact with devices. Driver contains various manuals which tell computer where it attempts to lớn perform basic input/output actions with device. When you get USB not recognized error, it is likely that there is something wrong with device drivers. Hence, this problem can be removed via fixing incorrect or outdated drivers. Here is how to update USB device drivers.

Step 1 xuất hiện Device Manager. Right-click on Start menu & select Device Manage option from Start menu; if you are using Windows 7, you need khổng lồ right-cliông chồng on Computer ibé and select Manage, after which you can select Device Manager.

Step 2 Browse & exp& Universal Serial Bus Controllers, and you can find the device is tagged as Unknown devices.

Step 3 Right-cliông xã on the Unknown Device and select Properties. Then select Driver tab from the Properties window.

Step 4 Click Update Driver button và choose "Search automatically for update driver software" on popped-up window.

If this does not work you can try updating drivers manually: go khổng lồ the website of the device"s manufacturer and download the lakiểm tra drivers. Then run the driver installer khổng lồ get drivers installed, after which restart computer.

Solution 5: Fix USB root hub

There are some cases that USB device does not work properly issue is caused by the power management setting. So you can try following steps khổng lồ fix it.

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Step 1 Still open Device Manager và expvà Universal Serial Bus Controllers lớn locate USB Root Hub.

Step 2 Right-cliông xã on USB Root Hub & select Properties.

Step 3 On the Properties window select Power nguồn Management tab và unkiểm tra Allow the computer lớn turn off this device to save power. Then clichồng OK button.


If there are multiple USB Root Hubs on your computer, you need lớn repeat this operation on all of them.

Solution 6: Uninstall hidden devices

By default, Windows Device Manager does not show all devices installed lớn computer, as it displays those that you are operating. Sometimes some hidden devices may conflict with connected device và cause the problem. So we can view all hidden devices and uninstall useless devices to lớn avoid any issue.

Step 1 Launch Comm& Prompt as administrator. Cliông xã Start button & type cmd in searching box, & right-clichồng cmd.exe pháo and choose Run as administrator.

Step 2 Type following commands in Commvà Prompt và press Enter after each command:



start devmgmt.msc

Step 3 Now Device Manager is launched and you should click View menu and choose "Show hidden devices" option.

Step 4 You can identify devices which are greyed out và unknown device. Right-clichồng one and choose Uninstall. Repeat this action until all problematic devices are removed.

Solution 7: Disable USB selective suspkết thúc settings

USB selective suspend setting is a feature provided to lớn assign certain USB port to a power saving mode, which looks like the computer"s sleep mode. Such feature is very useful when your máy tính xách tay or tablet is only on battery. However, if you are using a desktop, this feature is not necessary, & sometimes causes USB device not recognized issue. Here is how khổng lồ disable it:

Step 1 Cliông chồng Start thực đơn and type power plan in searching box. Then clichồng Choose a power plan from searching result.

Step 2 Select Change Plan Settings next lớn your currently selected plan. Then choose Change advanced power setting.

Step 3 Select the box to lớn expvà USB settings và then choose USB selective sầu suspkết thúc settings.

Step 4 Choose Disabled from the drop-down các mục. Then cliông xã Apply & OK button khổng lồ save sầu changes.

How lớn retrieve data from malfunctioned or not recognized USB device?

These solutions introduced above are possible methods said to be effective to repair USB device not recognized issue. If none of them works on your USB drive sầu, you can try USB drive sầu recovery software to lớn retrieve data from damaged & malfunctioned USB disks. jubileecityfest.org DiskGenius Pro can help you if the USB disk is not displayed in File Explorer and it is compatible with all versions of Windows system.

With this recovery software, you can retrieve sầu data from corrupt devices, for example, SD thẻ not showing up in File Explorer but shows in Disk Management, uninitialized hard drive sầu, etc. Connect your USB device khổng lồ computer and launch jubileecityfest.org USB drive recovery software, and you can follow these steps to recover data.

Step 1 Select the USB device where you want to lớn recover data, cliông chồng Tools menu and select "Recover Lost Files" option.


Step 2 Select "Complete Recovery" và "Search For Known File Types" option from the Recover Files window và cliông xã Start button. Then the application will soon start a quichồng & deep scan to lớn find out recoverable files.


Step 3 PReviews và filter recoverable files. You can pReviews files displayed after scanning process to lớn identify what you want lớn recover. Also, you can filter files by tệp tin type, name, kích cỡ, modify time, etc. to locate files quickly.


Step 4 Recover data from USB drive. Select all files and folders that are important to lớn you and right-clichồng on them to lớn choose "Copy To", after which you can save sầu these files khổng lồ a different drive.



This article explains a couple of solutions which have been proved lớn be effective sầu by many users, và we hope these methods can help you fix USB device not recognized issue. If you are facing hard drive not showing up issue, you can refer khổng lồ our previous tutorials. If your USB device is physically damaged, you may need to lớn replace it with a new one. Should you have sầu any suggestions or questions related on this issue, please feel free khổng lồ comment or email our tư vấn team.