Unknown Device

[Clayton]

on a few occasions when I run the following from this site
http://www.psy.fsu.edu/tsg/faqs/XP - Remove_Hidden_Devices.htm

I see that there is an unknown device in yellow there, where would this be
coming from? I remove it and reboot and it is gone until it comes back
again.
Should I unplug the USB devices until it dissapears? I think it may be an
issue with my Canon LiDE 35 scanner

 

[Wesley Vogel]

If the device only shows up when you use this command...

set devmgr_show_nonpresent_devices=1

....then it is a phantom device that is not connected to the computer.

I would guess that it comes back again after deletion when you reconnect the
device.

How to troubleshoot unknown devices that are listed in Device Manager in
Windows XP
http://support.microsoft.com/kb/314464

Device Manager Does Not Display Devices That Are Not Connected to the
Windows XP-Based Computer
http://support.microsoft.com/kb/315539

Unknown Devices
Unknown Devices helps you find what those unknown devices in Device Manager
really are.
http://www.halfdone.com/Development/UnknownDevices/

Unknown Devices
http://web.archive.org/web/20050205222855/www.halfdone.com/Development/UnknownDevices/

--
Hope this helps. Let us know.

Wes
MS-MVP Windows Shell/User

In

 

[Clayton]

I thought phantom devices show up as greayed out devices and not as a
(yellow) unknown device

 

[Wesley Vogel]

A black exclamation point (!) on a yellow field indicates the device is in
a problem state. Note that a device that is in a problem state can be
functioning.

Troubleshooting Device Conflicts with Device Manager
http://support.microsoft.com/kb/310126

--
Hope this helps. Let us know.

Wes
MS-MVP Windows Shell/User

In