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There is possibly an unbelievably simple solution to the “USB device not recognized ” error which worked for me. I love USB and have 5 ports on my computer so that I can connect my mouse, keyboard, camera, phone, and printer to it all at once!
However, last weekend, my computer stopped recognizing my USB devices! The strange thing about it was that the USB ports were not bad because all of my devices were still getting power to them. I could still charge my cell phone without a problem!
So I started with the normal fixing methods, including uninstalling the drivers for my devices and reinstalling them. That didn’t work! Next I tried System Restore thinking that maybe I had installed something and it caused a conflict with the USB system drivers. That didn’t work!
I read online that in order to fix this problem I should go to Device Manager and uninstall all of the devices under USB Controllers. Restarted the computer, reinstalled the USB drivers, but the problem STILL did not go away!
You may also see in Device Manager that the device shows up as an “Unknown Device ”.
So how did I finally fix the problem? Well, apparently it’s a super simple solution! No need to edit the registry, uninstall drivers, or anything of that sort.
Simply UNPLUG YOUR COMPUTER FROM THE POWER SUPPLY . Yes that’s it! Note that this does not mean just turning off your computer because modern computers don’t really turn off when you press the power button as the motherboard still gets power.
First to explain, the motherboard is where all of hardware of the computer is connected to, including the USB ports. Sometimes the motherboard needs to be “rebooted” also because something can go wrong, i.e. all your USB ports suddenly stop working. The small microprocessor on the motherboard will reload the drivers and your USB ports should be back to recognizing all devices!
So first turn off your computer using Shut Down or pressing the power button and then UNPLUG it from the wall outlet. Let it sit for about a minute and then plug it back in.
Hope this helps someone fix that highly irritating “USB device not recognized” Windows error!
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Running the System Restore utility… |
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1. Click Start, click All Programs, click Accessories, click System Tools, and then click System Restore. 2. Click Continue or provide Administrator credentials if necessary. 3. Click Choose a different restore point, and then click Next. 4. Select a Date and Time prior to first sign of the issue you’ve described. 5. If the date you need is in excess of (5) days click the Show restore points older than 5 days check box.
Important Notice: That System Restore affects Windows system files, programs, and registry settings. It can also make changes to scripts, batch files, and other types of executable files on your computer. Thus, any recently installed programs, updates, or changes to configuration will be lost if you use System Restore. However, make note that System Restore does not affect personal files, such as e-mail, documents, or photos, so it cannot help you restore a deleted file. |
You may need to run a System File Check: This will check the Operating system files for any damaged files and attempt to fix them.
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Running the System File Checker… |
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1. Click Start, click All Programs, click Accessories, right-click Command Prompt, and select Run as Administrator. 2. Click Continue or supply Administrator credentials if prompted. 3. In the Command Prompt window type the following, and press Enter: sfc /scannow 4. You should see the following on-screen messages: Beginning the system scan. This process will take some time. Beginning verification phase of system scan. Verification % complete. 5. Once the scan has completed you will receive an onscreen message resembling one of the following: …found no integrity violations …found corruption but repaired it …found corruption that it could not repair 6. Please reply with the completion message that you received. |
The system restore did not work. Still no USB and errors keep coming up.
The SFC scan completion message is:
Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBS.Log windir\logs\CBS\CBS.log. For example C:\ Windows\Logs\CBS\CBS.log
Hello KenRD,
If you have your OS (operating system) disk then try the repair my windows option. Let us know either way. Make it a great day!
There is possibly an unbelievably simple solution to the “USB device not recognized ” error which worked for me. I love USB and have 5 ports on my computer so that I can connect my mouse, keyboard, camera, phone, and printer to it all at once!
However, last weekend, my computer stopped recognizing my USB devices! The strange thing about it was that the USB ports were not bad because all of my devices were still getting power to them. I could still charge my cell phone without a problem!
So I started with the normal fixing methods, including uninstalling the drivers for my devices and reinstalling them. That didn’t work! Next I tried System Restore thinking that maybe I had installed something and it caused a conflict with the USB system drivers. That didn’t work!
I read online that in order to fix this problem I should go to Device Manager and uninstall all of the devices under USB Controllers. Restarted the computer, reinstalled the USB drivers, but the problem STILL did not go away!
You may also see in Device Manager that the device shows up as an “Unknown Device ”.
So how did I finally fix the problem? Well, apparently it’s a super simple solution! No need to edit the registry, uninstall drivers, or anything of that sort.
Simply UNPLUG YOUR COMPUTER FROM THE POWER SUPPLY . Yes that’s it! Note that this does not mean just turning off your computer because modern computers don’t really turn off when you press the power button as the motherboard still gets power.
First to explain, the motherboard is where all of hardware of the computer is connected to, including the USB ports. Sometimes the motherboard needs to be “rebooted” also because something can go wrong, i.e. all your USB ports suddenly stop working. The small microprocessor on the motherboard will reload the drivers and your USB ports should be back to recognizing all devices!
So first turn off your computer using Shut Down or pressing the power button and then UNPLUG it from the wall outlet. Let it sit for about a minute and then plug it back in.
Hope this helps someone fix that highly irritating “USB device not recognized” Windows error!Enter the thread ID of the thread you are merging into
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