Connecting an external hard drive, USB flash drive, or memory card to your computer and seeing the USB device not recognized error appear sucks. There are many possible reasons for your USB device to not be recognized. The USB device itself could be damaged, there could be something wrong with the USB port, or you could be experiencing driver issues, just to give a few examples.
To figure out why your device is not showing up on your computer, you need to first rule out the possibility of your computer being to blame by connecting the device to a different machine. The first thing you should do if your USB device is not showing file is run a data recovery tool like Disk Drill:.
To disable it:. Not all phones are detected without additional steps. If you have an Android phone, you might need to activate the Media device MTP transfer option to see media files on Windows. David Morelo is a professional content writer in the technology niche, covering everything from consumer products to emerging technologies and their cross-industry application.
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The potential causes of this annoying error are numerous, but the same goes for the fixes that you can use to solve them: Problem Solution Hardware error : USB devices are not immune to hardware errors, which may cause them to behave erratically and stop being reliable.
Why is my USB not showing up? Why is my device not showing up on my computer? What to do if my USB device is not showing files? Launch it and scan your USB device. Select all recoverable files. Click the Recover button. Go to Control Panel and select Power Options. Then click on Choose what the power button does.
By click Change settings that are currently unavailable. Then uncheck Turn on fast startup recommend option and click on Save Changes. Restart your computer after the driver has been uninstalled. Once computer management comes up, click on Disk management. Find your hard drive. To do so, check through the sizes of drives in your drive management system If your drive is not partitioned, you will see at least one drive in particular with an unallocated space to it.
Click on Add and make sure you assign a particular letter to the partition. Once the command prompt comes up, paste these lines below and click ok after each line to run them through.
Expand all the sections and make sure you delete all gray entries. Restart your computer and reconnect your hard drive. Go to the Universal Serial controller after opening your system' Device Manager. Expand the Controller section and locate all Unrecognized devices. On the Unrecognized devices, Right-click to pick the item " uninstall device ". Press the scan button to scan for available hardware changes.
Should you not see any unrecognized devices in your Manager, skip the last step and just try replacing the old letter with a new one. Once the command prompt opens up, type the list volume then tap the Enter key to run command. Identify your exact USB storage file amongst the list. We advise you to choose "Select Volume 2" because it is much easier to use this prompt. Tap Enter to proceed.
Close the command prompt and see if your hard drive is recognizable. Win Version Mac Version. Recover data from raw drive. Recover corrupted USB. Recover Sandisk USB data. On some computers, you might see two, three or more of these. Right-click on the first one and choose Update Driver Software. Then click on Let me pick from a list of device drivers on my computer at the bottom.
Click Next and then click Close once it finishes installing it. At this point, the Device Manager screen should refresh and either the unknown device will still be there or it may now be recognized.
As a last resort, you can also try uninstalling all USB devices from your system and then restarting.
I had a computer with 6 USB ports and only one port would not work properly. Instead of re-detecting everything, I was left with no USB port working, so be careful when using this method. Before you start with anything that is already working, uninstall the items with exclamation points or that are listed as Unknown Device.
It basically only shows the ones that are currently connected. You can view hidden devices in Device Manager by first opening a command prompt and then typing the following two commands:. If you see anything listed there that is greyed out or that says unknown device, go ahead and right-click on them and choose Uninstall.
Hopefully, removing the older devices will allow the newer devices to work properly. The best thing to do is to connect the device to another computer and see if it works or not. Possible Solution 1 — The other possible solutions are to try a different USB cable, if you have one lying around. This is a fairly rare problem, but I have seen it occur a few times over my many years doing technical support. Possible Solution 2 — Another possible solution is to take the device, connect it to another machine and if it does recognize the device properly, to then eject it properly from that computer before reconnecting it to the original computer.
After connecting them to another computer and ejecting them properly from there, they suddenly started to show up on the original computer that was not recognizing them. Hopefully, one of the many solutions above will solve your USB problem.
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