Windows XP recognizes Scanner as unknown device



Tony Vega
07-10-2005, 01:00 AM
Windows XP does not recognize my scanners correctly. It recognizes them as
Unknown devices. I have both an HP 5300C and a brand new Canon MP780. Both
scanners work perfectly on other computers and all the functions on the MP780
except the scanner function work. On the other computer running XP it works.
Same USB cable. I have even tried USB ports on the USB computer that is not
recognizing it. Please help. Thanks.

Tony

Damo
07-10-2005, 01:00 AM
Try loading vendor's drivers onto the problem system instead of using the
Windows XP ones, as I assume you are.
Damo

"Tony Vega" <TonyVega@discussions.microsoft.com> wrote in message
news:808FDF5C-7105-46D5-87A8-B75C76C6D20B@microsoft.com...
> Windows XP does not recognize my scanners correctly. It recognizes them
> as
> Unknown devices. I have both an HP 5300C and a brand new Canon MP780.
> Both
> scanners work perfectly on other computers and all the functions on the
> MP780
> except the scanner function work. On the other computer running XP it
> works.
> Same USB cable. I have even tried USB ports on the USB computer that is
> not
> recognizing it. Please help. Thanks.
>
> Tony

DL
07-10-2005, 01:00 AM
Perhaps also there are mobo bios/drivers available for the problem system.
I assume you followed reccomended manu. procedure for installation of these
devices

"Tony Vega" <TonyVega@discussions.microsoft.com> wrote in message
news:808FDF5C-7105-46D5-87A8-B75C76C6D20B@microsoft.com...
> Windows XP does not recognize my scanners correctly. It recognizes them
as
> Unknown devices. I have both an HP 5300C and a brand new Canon MP780.
Both
> scanners work perfectly on other computers and all the functions on the
MP780
> except the scanner function work. On the other computer running XP it
works.
> Same USB cable. I have even tried USB ports on the USB computer that is
not
> recognizing it. Please help. Thanks.
>
> Tony

Ron Martell
07-10-2005, 01:00 AM
Tony Vega <TonyVega@discussions.microsoft.com> wrote:

>Windows XP does not recognize my scanners correctly. It recognizes them as
>Unknown devices. I have both an HP 5300C and a brand new Canon MP780. Both
>scanners work perfectly on other computers and all the functions on the MP780
>except the scanner function work. On the other computer running XP it works.
> Same USB cable. I have even tried USB ports on the USB computer that is not
>recognizing it. Please help. Thanks.
>
>Tony

Make sure you have the drivers for the scanner in a folder on the hard
drive or on a CD. If on a CD insert it into the drive.

Open Control Panel - System - Hardware - Device Manage.

Locate the Scanner entry in the "other devices" category, right-click
on it and select Properties. Go to the Driver tab and click on the
"Update Driver" button. Let it search for the updated driver with
the "Install the sofware automatically" option on the first attempt.
If that doesn't work then use the "Install from a specific location"
option and browse to the driver files on the hard drive or CD.

Repeat for the second scanner.

Good luck



Ron Martell Duncan B.C. Canada
--
Microsoft MVP
On-Line Help Computer Service
http://onlinehelp.bc.ca

In memory of a dear friend Alex Nichol MVP
http://aumha.org/alex.htm

pcbutts1
07-10-2005, 01:00 AM
Remove the Unknown device from the device manager, unplug the scanner,
reboot, plug in the scanner, what happens include error message.

--


The best live web video on the internet http://www.seedsv.com/webdemo.htm
NEW Embedded system W/Linux. We now sell DVR cards.
See it all at http://www.seedsv.com/products.htm
Sharpvision simply the best http://www.seedsv.com



"Tony Vega" <TonyVega@discussions.microsoft.com> wrote in message
news:808FDF5C-7105-46D5-87A8-B75C76C6D20B@microsoft.com...
> Windows XP does not recognize my scanners correctly. It recognizes them
> as
> Unknown devices. I have both an HP 5300C and a brand new Canon MP780.
> Both
> scanners work perfectly on other computers and all the functions on the
> MP780
> except the scanner function work. On the other computer running XP it
> works.
> Same USB cable. I have even tried USB ports on the USB computer that is
> not
> recognizing it. Please help. Thanks.
>
> Tony

Tony Vega
07-10-2005, 01:00 AM
Tried that even with the support of Canon. The funny thing is that it was
working untill I mucked around inside the registry trying to remove old
drivers for the HP that would properly un-install. It has something to do
with Windows as the scanner function works perfectly on another computer
running windows XP. Thanks for your suggestion though.

"Damo" wrote:

> Try loading vendor's drivers onto the problem system instead of using the
> Windows XP ones, as I assume you are.
> Damo
>
> "Tony Vega" <TonyVega@discussions.microsoft.com> wrote in message
> news:808FDF5C-7105-46D5-87A8-B75C76C6D20B@microsoft.com...
> > Windows XP does not recognize my scanners correctly. It recognizes them
> > as
> > Unknown devices. I have both an HP 5300C and a brand new Canon MP780.
> > Both
> > scanners work perfectly on other computers and all the functions on the
> > MP780
> > except the scanner function work. On the other computer running XP it
> > works.
> > Same USB cable. I have even tried USB ports on the USB computer that is
> > not
> > recognizing it. Please help. Thanks.
> >
> > Tony
>
>
>

Tony Vega
07-10-2005, 01:00 AM
Tried that too. The error message is "Cannot communicate with scanner.
Scanner may be turnedd off, a cable may be diconnected. Please check the
status and try again. Scanner driver will be closed."

"pcbutts1" wrote:

> Remove the Unknown device from the device manager, unplug the scanner,
> reboot, plug in the scanner, what happens include error message.
>
> --
>
>
> The best live web video on the internet http://www.seedsv.com/webdemo.htm
> NEW Embedded system W/Linux. We now sell DVR cards.
> See it all at http://www.seedsv.com/products.htm
> Sharpvision simply the best http://www.seedsv.com
>
>
>
> "Tony Vega" <TonyVega@discussions.microsoft.com> wrote in message
> news:808FDF5C-7105-46D5-87A8-B75C76C6D20B@microsoft.com...
> > Windows XP does not recognize my scanners correctly. It recognizes them
> > as
> > Unknown devices. I have both an HP 5300C and a brand new Canon MP780.
> > Both
> > scanners work perfectly on other computers and all the functions on the
> > MP780
> > except the scanner function work. On the other computer running XP it
> > works.
> > Same USB cable. I have even tried USB ports on the USB computer that is
> > not
> > recognizing it. Please help. Thanks.
> >
> > Tony
>
>
>


Windows XP recognizes Scanner as unknown device