Hi All,
I have a CanonScan D1250U2F and had trouble using it again after
upgrading to XP (SP2 (yes the beta version)). (I had used it for
windows 2000 without problems). Just a moment ago I got it to work
again. Here the details:
My problem was that it wasn't even detected as new hardware any more
by XP.

So I tried to add it by: Start|Settings|Scanners & Camera's|Add device
....and then going to the ScanGear driver directory (selecting the
*.INF file) - it didn't list any scanners - so that didn't work
either.

Finally I thought that maybe the scanner had broke, so I tested it on
a friends computer (which only has USB1.1 not USB2) - to see if it got
recognized there. And wonder wonder: it was recognized as 'New
Hardware'.
(for this I had to unplug the scanner and take it somewhere else)

When I connected it back to my computer again and booted, suddenly it
was detected again...

So I think the scanner has some internal state that gets resetted
either if:
-the power gets disconnected for a while
-it's connected to a USB1.1 port

The first seems the most logical to me (and I just read that someone
else also got it to be detected again after power unplugging)... so if
your scanner is not detected anymore:
-Uninstall all drivers (use the uninstall software from the Canon
site)
-Uninstall the Toolbox software
-Disconnect the power and USB cable
-Boot computer at least once with scanner - shutdown again
-Connect scanner again (power and USB)
-The scanner is detected again (hopefully)

I hope you will have some joy or relief from this post - I would have,
if I still had the problem I just solved =]

Do post replies if this solution solved your problem, so others can
verify it works (or not).

Moon300

USB ports are, by default, set tobe turned off while not being used to save
power. This option can be unchecked in the Device Manager under USB ports -
each Root Hub must be configured separately.
--
Cari (MS-MVP Windows Client - Printing, Imaging & Hardware)
www.coribright.com

"moon300" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi All,
> I have a CanonScan D1250U2F and had trouble using it again after
> upgrading to XP (SP2 (yes the beta version)). (I had used it for
> windows 2000 without problems). Just a moment ago I got it to work
> again. Here the details:
> My problem was that it wasn't even detected as new hardware any more
> by XP.
>
> So I tried to add it by: Start|Settings|Scanners & Camera's|Add device
> ...and then going to the ScanGear driver directory (selecting the
> *.INF file) - it didn't list any scanners - so that didn't work
> either.
>
> Finally I thought that maybe the scanner had broke, so I tested it on
> a friends computer (which only has USB1.1 not USB2) - to see if it got
> recognized there. And wonder wonder: it was recognized as 'New
> Hardware'.
> (for this I had to unplug the scanner and take it somewhere else)
>
> When I connected it back to my computer again and booted, suddenly it
> was detected again...
>
> So I think the scanner has some internal state that gets resetted
> either if:
> -the power gets disconnected for a while
> -it's connected to a USB1.1 port
>
> The first seems the most logical to me (and I just read that someone
> else also got it to be detected again after power unplugging)... so if
> your scanner is not detected anymore:
> -Uninstall all drivers (use the uninstall software from the Canon
> site)
> -Uninstall the Toolbox software
> -Disconnect the power and USB cable
> -Boot computer at least once with scanner - shutdown again
> -Connect scanner again (power and USB)
> -The scanner is detected again (hopefully)
>
> I hope you will have some joy or relief from this post - I would have,
> if I still had the problem I just solved =]
>
> Do post replies if this solution solved your problem, so others can
> verify it works (or not).
>
> Moon300
>