Windows XP stops recognizing previously installed USB devices

Posted on 2009-02-22
Last Modified: 2012-06-27
I examined the "[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion]
"DevicePath" and found that it contained both the suggested content ";%SystemRoot%\inf;" but a vast amount of other entries (see below). I'm using a HP XW6400 Workstation with WIndows XP SP3. I still have the problem. If this the correct content for the "DevicePath"?

The loss of the various USB devices has been devastating and any help would be greatly appreciated.

Thank you!



Question by:iwhalperin
    LVL 39

    Expert Comment

    First, try to change the value (1 to 0 or 0 to 1):


    Author Comment

    I made the change in the NoInstall Class from 1 to 0; no joy.  What should I try next?

    LVL 91

    Expert Comment

    try uninstalling all usb entries from device manager, reboot and test
    LVL 66

    Accepted Solution

    There is no right answer to your question of the DevicePath value. It is whatever your system was configured for, in terms of supplied driver paths...

    You can remove everything from there except for "%SystemRoot%\inf" if you like. (Back it up first..)

    If you delete everything as suggested above, you will need to reinstall with the latest drivers.....


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