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Removable hard drive cannot be identified

时间:2019-10-15 08:42:29 责任编辑:U盘大师编辑 Source: http://obatkuatviagrausa100mg.com/ Time: 2019-10-15 08:42:29 Responsible editor: U disk master editor

The mobile hard disk cannot be identified for two reasons. One is that the mobile hard disk is broken. If so, the mobile hard disk can only be replaced. Another reason is the USB interface problem. Hope to help everyone.

Recommended solutions for unrecognized USB disks:

Method one: process through the command prompt


1. First insert the USB device into the USB interface of the computer, then click the computer's "Start" menu, click "Run", enter the "cmd" command in the input box, and click the "OK" button.

How to repair the mobile hard disk is not recognized

2.Execute the following two commands in the command prompt window

reg add "HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Session Manager \ Environment" / v "DEVMGR_SHOW_DETAILS" / d 1 / t REG_SZ / f

reg add "HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Session Manager \ Environment" / v "DEVMGR_SHOW_NONPRESENT_DEVICES" / d 1 / t REG_SZ / f

How to repair the mobile hard disk is not recognized

3. Restart the computer, click the "Start" menu, open "Run", enter the "devmgmt.msc" command, click the "OK" button or right-click "My Computer" on the desktop, and select "Properties" in the pop-up shortcut menu ", Click the" Hardware "tab, and then click the" Device Manager "button below.

How to repair the mobile hard disk is not recognized
How to repair the mobile hard disk is not recognized

4. Open the device manager and click "View"-"Show hidden devices" in the menu bar.

How to repair the mobile hard disk is not recognized

5. Double-click the "Universal Serial Bus Controller" item with the left mouse button to unload the gray items and USB mass storage devices displayed.

How to repair the mobile hard disk is not recognized

6. Then right-click the "Universal Serial Bus Controller" item and select "Scan for hardware changes" from the pop-up menu.

How to repair the mobile hard disk is not recognized

7. Unplug the USB device and plug it in again to see if it is OK.

How to repair the mobile hard disk is not recognized

8. If re-insertion is still not good, right-click the "USB Root Hub" item under "Universal Serial Bus Controller" and click "Properties".

How to repair the mobile hard disk is not recognized

9. Click the "Power Management" tab in the window that opens, remove the "Allow the computer to turn off this device to save power", and click the "OK" button (modify the properties of each USB Root Hub in turn).

How to repair the mobile hard disk is not recognized


Method two: resolve through the registry


1. Click the "Start" menu, select the "Run" command, enter the "regedit" command in the box that opens, and then click the "OK" button.

How to repair the mobile hard disk is not recognized

2. Open the "Registry Editor" window, and expand the following branches in turn in the registry tree window on the left

HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Class \ {4D36E967-E325-11CE-BFC1-08002BE10318}

How to repair the mobile hard disk is not recognized

3. Right-click "UpperFilters" and "LowerFilters" and select Delete.

How to repair the mobile hard disk is not recognized
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