Fixing the "Unknown USB Device" Error - Expert Solutions

2024-08-19 Ashley S. Miller Specialist of Customer Service Dept.

Summary

Resolve the "unknown USB device" error swiftly with our definitive guide—employ proven steps to protect your data and restore device functionality.

Table of contents

I. The reason and solution of unknown USB device displayed when the USB device is inserted into the computer

• 1. The USB device is not installed in place
• 2. The USB device is damaged
• 3. The Plug and Play service item is not started

II. How to recover lost data with Renee Undeleter?

• 1. What is Renee Undeleter?
• 2. How to recover lost data with Renee Undeleter?

I. The reason and solution of unknown USB device displayed when the USB device is inserted into the computer

After inserting the USB device into the computer interface, if it is not recognized normally and displays the fault prompt “ unknown USB device (device descriptor request failed) “, it may be caused by various situations. You can try the following solutions separately to resolve the issue.

1. The USB device is not installed in place

Check for “unknown USB device” error, ensure good contact between USB interface and computer port. Reinsert USB device fully into port, then try again to resolve issue.

2. The USB device is damaged

If a USB device is damaged due to improper use or violence, similar error prompts may appear. In such cases where the USB cannot be used normally, it is recommended to replace it with a new USB device.

3. The Plug and Play service item is not started

Plug and Play is a plug-and-play service that may impact the USB interface when disabled. If the “Unknown USB device (device descriptor request failed)” prompt appears in the device manager, it could be due to the disabled Plug and Play service. The solution is to enable the Plug and Play service.

The specific operation method is as follows:

Step 1: Turn on the computer, directly search and find the ( service ) application in the search in the lower left corner.

Step 2: On the service details page that opens, find the ( Plug and Play ) option, and you can see the current running status of the service.

Step 3: Right-click on the (Plug and Play) service item, open the (Properties) panel, change “Startup Type” to (Automatic) , and click (Start) . Service item is now enabled.

Step 4: After the operation is completed, you can see that the Plug and Play service item is displayed as ( running ) status.

Step 5: Finally, reconnect the USB device, and check whether the USB device is back to normal in ( Universal Serial Bus Controller ) in ( Device Manager ).

Several common solutions to solve the problem that the computer cannot recognize the USB device include using a professional data recovery tool like Renee Undeleter . This software is easy to use and suitable for novice users to recover lost data efficiently.

II. How to recover lost data with Renee Undeleter?

1. What is Renee Undeleter?

Renee Undeleter is a software specifically designed for restoring system data files. It can recover lost data in various scenarios such as accidental deletion, emptying the recycle bin, or disk/storage formatting. The software includes four functional modules: Fast Partition Scan , Whole Partition Scan , Whole Disk Scan , and Image Creation , providing comprehensive solutions for all types of data loss problems that may occur during system use.

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2. How to recover lost data with Renee Undeleter?

Restoring data with Renee Undeleter is very simple. The specific steps are as follows:

Step 1: Download, install and run Renee Undeleter , select the ( Whole Disk Scan ) option on the main interface.

Note : Do not install Renee Undeleter on the disk where the data is lost to avoid data overwriting.

Step 2: Next, select the USB disk device that needs to restore the partition, and then click (Next).

Step 3: After that, the software will analyze your USB disk, please wait patiently for the end of the progress bar below.

Preview the scanned files in the window on the right, select the files to restore, and click the (Recover) button at the bottom right .

Step 4: Select the target folder, click (Browse) to choose the storage path, then click (Recover) to begin file recovery. Simply wait patiently.

Note : Please do not save the recovered files on the original disk to avoid data overwriting. It is recommended to choose another disk to save these recovered files.

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Fixing the "Unknown USB Device" Error - Expert Solutions