Plug & Play not working for external hard drive RRS feed

  • Question

  • Hello.

    Any help please?

    I have a External Desktop drive (Seagate ST305004EXD101-RK) and have a problem connecting to PC's and other devices that it did connect to previously.

    I think the Plug & Play has stopped working and I need it to work that way like it did when it first came.

     I have tried going into disk management etc drive is healthy, does have a letter etc.


    I plug the USB cable in to my PC and nothing happens, nothing in My Computer, It does detect it in Device manager & make the connection noise but it doesn't give me a drive or lettered drive.

    If I reboot the PC with the drive connected it does give me a drive letter. but if I unplug the cable then reconnect later it does give me a drive again.

    I need it to detect that I have plugged the drive in without rebooting PC.

    Friday, October 8, 2010 3:29 PM


  • Hi,

    Thank you for your post!

    Please try plug the USB cable to other PC and check the result. If the same issue, the harddrive is to blame.

    I suspect it is due to power supply is not sufficent. Please unplug all unnecessary devices as test.

    If it is due to configuration, please try the following:

    1.       In the run command (Start menu bar) type "regedit" to bring up the Registry Editor.
    2.       In Registry Editor, navigate to:
    3.       In the details pane, double-click DevicePath.
    4.       Add a semi-colon to end of the existing text, and then add the path to %SystemRoot%\System32. The result should be similar to: %SystemRoot%\inf;%SystemRoot%\System32
    Do not remove the %SystemRoot%\inf file path from the DevicePath registry entry.
    5.       Click OK to save the new value, and then close Registry Editor.
    6.       Delete “INFCACH.1” FROM C:\Windows and C:\Windows\Inf Directories (if it exists)
    7.       Ensure that there is a copy of the usbstor.inf file in C:\Windows\Inf

    If there isn’t – follow the below steps:

    a)      From another Vista system (copy it out of another Vista system and copy it directly into the C:\Windows\inf directory
    b)      From the problem machine, run Command Prompt ( as administrator). From C:\ do a dir usbstor.inf /s  . Wherever the file is found, go to that directory and copy all the files located in that directory to C:\Windows\inf directory
    8.       Open device manager, uninstall all unknown devices (right click, uninstall) so they all disappear from the list
    9.       Reboot the computer
    10.   Plug the device in (the drivers will now install and the device will be usable!)


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    Friday, October 15, 2010 7:56 AM