USB "blacklisted" devices: how to remove them
Frederic Bastenaire
On Win2000 and Win XP, when you connect a new USB device (HID or mass storage
for example), "normally" everything works fine via the magic plug and play
built in mechanisms...
But sometimes, something goes wrong - maybe a fugitive hardware init problem,
and then the device seems to be "blacklisted" by Windows. Once you connect
it again, it is registered as "unknown device" forever, even if you deinstall
it in the Device Manager.
I had this experience several times (HID and flash memory mass storage devices).
These devices work find on another PC with the same OS, but on the PC where
they failed once, NO WAY. I tried everything with no success: "unknown device"
once for all: deinstalling the device in the Device Manager does not help.
I could not find where/how this "black list" is stored (registry, \windows\inf,
etc...), I tried to start in Safe Mode, no difference.
Could someone please explain me how to restore my PC to a "virgin" configuration
to allow correct detection of these USB devices (except reinstalling the OS
of course...).
The device that currently bothers me is a USB generic flash disk
with VID=0EA0 / PID=6803.
XP seems to recognize this kind of devices in a special way and
generate "OEMXX.INF" files by the fly when everything works fine,
but not always...
Thank you in advance for your help,
FB
Bruce Duysen
problem with the USB driver for a Linksys wireless USB
adapter. In my case, I continue to get "Service name in
use" errors on installation, even though everything has
previously been (apparently) uninstalled.
So, you've asked the magic question: How do you get all
of the "stuff" removed from a failed installation,
to "virgin" status as you say, without resorting to
reinstalling the operating system? I've got to assume
that entries are placed in the Windows registry, but
where? How to access & fix?
The last thing I need is the manufacturer sending (once
again) the standard installation procedure, or some
brilliant advice like "look in Device Manager and
delete". This type of problem is down in the bowels
somewhere...
Bruce Duysen
>.
>
Opinicus
> reinstalling the operating system? I've got to assume
> that entries are placed in the Windows registry, but
> where? How to access & fix?
Is it possible to go back to a restore point made before the failed
installation?
--
Bob
Kanyak's Doghouse
http://kanyak.com
Robert Breunung
devicemanager "show all devices" or "show hidden devices"(translated) works,
but i think restartin in secure mode is doing the same
Kevin M
"Bruce Duysen" <bedu...@yahoo.com> wrote in message
news:003501c2ff22$777fcb70$3401...@phx.gbl...
| So, you've asked the magic question: How do you get all
| of the "stuff" removed from a failed installation,
| to "virgin" status as you say, without resorting to
| reinstalling the operating system? I've got to assume
| that entries are placed in the Windows registry, but
| where? How to access & fix?
It's too late for this bit to help now, but for future reference, it's
always a good idea to make a Restore Point before installing new devices,
and even new software. I don't do it as often as I should, so I sometimes
end up kludging through the registry manually, deleting the relevant keys.
If you're comfortable in Regedit (Logon as
Administrator->Start->Run->Regedt32), you can search (Edit Menu->Find) for
whatever word will guarantee hits on the device in question, and delete the
keys yourself. Of course all the standard disclaimers apply here, you can
render your system unusable with Regedit.
FWIW,
Kev
J-Dog
> under system-variables u had to enter some string, then the option in the
> devicemanager "show all devices" or "show hidden devices"(translated) works,
> but i think restartin in secure mode is doing the same
Your USB adapter may just be bad...does it have the same problem if
you connect it to a different device?
Frederic Bastenaire
> you connect it to a different device?
No, the USB adapter (on an ASUS A7V333 board with the latest VIA service
pack), works fine with all other USB devices, flash disks, printers, camera...
On the other hand, this damned flash disk (VID=0EA0,PID=6803) works fine
on other computers with XP, win 2000... it is only recognized as "unknown
device" on one PC (the ASUS A7V333).
I am puzzled. Searching in the registry fails: no instance of 0EA0 or 6803
that could be related to a USB device. I really wonder where the information
is stored, and which mechanism is used...
Heeeeeeeeeeeeelp I am getting crazy!!!!
Yours,
FB
JayDeeXP
I am currently browsing these newsgroups to find a solution for just
this problem. I've tested this problem with several USB devices such
as 6 (!!) mass storage devices, but also a memory card reader. This
last device can read 5 different types of memory cards such as SD,
MMC, CF etc and I needed to point to C:\Windows\INF 5 (!!) times to
have XP install a device driver.
And as my collegue had the same detection problem for his PCMCIA
IEEE1394 card on his notebook, I believe it's more a general HW
detection issue.
I would be glad if someone from Microsoft could comment on this.
Rgs,
Jan
f...@free.fr (Frederic Bastenaire) wrote in message news:<d977c973.03040...@posting.google.com>...
Frederic Bastenaire
The answer was in NG microsoft.public.windowsxp.general (cf infra).
So a driver can prevent windows generic mechanisms from doing
their job... but actually no "blacklist" is kept anywhere - at least
in this case.
Anyway it works and I feel much better now...
I sent the problem to Xilinx.
Yours,
FB
PS: many thanks to Berni Joss.
-------------------------------------------------
From: Berni Joss (bern...@yahoo.com)
Subject: USB Device not recognized
View: Complete Thread (4 articles)
Original Format
Newsgroups: microsoft.public.windowsxp.general
Date: 2002-10-29 13:57:02 PST
FYI
After using a flash card reader successfully for many months, I
suddenly get:
"USB Device Not Recognized" after plugging the TravelFlash 5in1 reader
into any usb port.
Some other usb peripherals work fine, only the PQI TravelFlash is not
recognized.
The system is a Dell Dimension 4400 running XP home.
Luckily I seem to have found the problem.
It appears that the MultiLINX driver installed by the Xilinx Free ISE
WebPACK 5.1i is not innocent.
After removing:
1. mlnxfltr.sys & mltlnx.sys from c:\windows\system32\drivers
2. rebooting
3. uninstalling the USB root hubs (there are two in a Dell Dimension
4400)
4. rebooting
I can again read my flash cards :-)
Have a good day,
Berni.