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USB DEVICES - How to delete all (resolves some USB problems)

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#1 Ztruker


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Posted 02 December 2008 - 09:49 PM

Follow directions in this MS article, see if that helps: http://support.microsoft.com/kb/310575

If not, try this:
  • Shutdown and unplug all USB devices.
  • Boot to BIOS Setup and load defaults (F5 or F9 usually).
  • Boot your computer and create a new Environment variable called devmgr_show_nonpresent_devices and set it's value to 1 as follows:
    • Right click on My Computer and select Properties
      • XP - Click on the Advanced tab
      • Vista or Windows 7 - Click on ]Advanced System Settings in left pane.
    • Click on the Environmental Variables button
    • Click the New button under the User variables for xxxxx" area.
    • Set the Variable name as: devmgr_show_nonpresent_devices
    • Set the Variable value to: 1
    • Click OK as needed to close all the windows you opened.
  • Open Device Manager (Control Panel, System, Hardware tab, Device Manager)
  • Click on View then Show hidden devices.
  • Scroll down to USB and click on the plus to expand it.
  • Uninstall them one at a time. DO NOT uninstall your mouse if you are using a USB mouse.
  • Shutdown and reboot, let XP rediscover everything and load necessary drivers. This can take a few minutes, be patient.
Now try the USB device, see what happens.

Edited by Ztruker, 22 August 2012 - 06:02 PM.


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