Re: USB problem
- From: "R. McCarty" <PcEngWork-NoSpam_@xxxxxxxxxxxxxx>
- Date: Mon, 3 Jul 2006 14:18:33 -0400
This sounds like a "Phantom Device" issue. Windows XP remembers all
hardware that has ever been installed with drivers on the computer. When
you remove the device, XP retains it's information in Device Manager but
with a status of "Not Currently Connected". It shows these non-connected
or Phantom devices in a slightly diminished tone (Grayed Out).
This is complicated further if the USB device is a USB 1(.1) technology
component. The way USB channels are routed, if you plug a USB1(.1)
device into a different socket ( Hub). Then the device many get duplicated
and exist in Device Manager a multiple of times.
You may need to add a System Environment Variable, named:
DevMgr_Show_NonPresent_Devices
and set it's value = 1
Open Device Manager, Click View, Tic/Check "Show Hidden Devices"
First, ensure you do not have a Device Type Group "Unknown". This is
where XP saves devices it's detected but was unable to find/load a driver.
Next expand Universal Serial Bus Controllers and look for any Grayed
Out entries. ( You should unplug your phone prior to doing this). Right
Click any "Phantoms" and choose "Uninstall" .
Once all Phantom entries are removed - Re-Plug your phone. If possible
always try to insert the USB plug into the same socket.
"liquidsense" <liquidsense@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:70B66F1B-0EFA-4352-B306-23F719133957@xxxxxxxxxxxxxxxx
I have a somewhat strange and unique question that I pray someone can help
me
with. I'm at my wits end - and I need help.
I recently purchased a cellphone that came with software to facilitate
connecting the phone to my computer via a USB cable. I installed the
software, and connected the phone with no problems, connecting and
transfering files and information.
Recently however, my computer has stopped recognizing the phone. I
thought
at first that it was a problem with my phone, so I installed the software
on
my friend's computer --- but it works just fine on her PC.
I'll try to be descriptive but brief. When the phone is NOT plugged in,
and
I start the software on my PC, and click "connect," then I get an error
message that indicates that there is nothing connected -- nothing special.
But, when I physically connect the phone, and then turn on the software,
and
click "connect," the message I get is: "Other application used this port.
Failed to open 6 port." No matter which USB port I use of the two that I
have, it gives me this error message.
I have uninstalled the program, deleted all registry keys, rebooted the
computer, and re-installed the software. I have also done the same process
after completely deleting my USB drivers.
What in the world is going on? My thoughts are that my computer has done
something to some USB setting, which now makes it want to reject the phone
for some reason. I want to say that it has something to do with the
Registry
stuff, but since I know little of computers, I can't be sure. Can anyone
deduce what the problem is?
Eric
.
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