USB Problems

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Tenshodman

I was running a powered USB hub off my desktop with a couple of devices
running off it for ages without incident. My problems started when I took
the computer out of suspend (as I always do) and the computer had frozen up.
I rebooted and an error message came up saying that a USB device had
malfunctioned and was not recognised. It turned out to be the USB hub with
the computer functioning normally once I unplugged the USB hub. Now my
mouse and other devices such as a web camera work OK. However, when I try
and use a multi-card reader and then my digital camera (to download digital
photos) I receive the same error message and cannot get these devices to
work. Does anyone have any suggestions. I have checked and the power needs
of the troublesome devices is well within spec of my computer USB ports. I
am running XP Professional which is always kept updated and I religiously
keep my virus program etc up to date and also run a firewall so a virus etc
is not the problem.

Cheers

Rod Gayford
 
Tenshodman wrote:
> I was running a powered USB hub off my desktop with a couple of devices
> running off it for ages without incident. My problems started when I took
> the computer out of suspend (as I always do) and the computer had frozen up.
> I rebooted and an error message came up saying that a USB device had
> malfunctioned and was not recognised. It turned out to be the USB hub with
> the computer functioning normally once I unplugged the USB hub. Now my
> mouse and other devices such as a web camera work OK. However, when I try
> and use a multi-card reader and then my digital camera (to download digital
> photos) I receive the same error message and cannot get these devices to
> work. Does anyone have any suggestions. I have checked and the power needs
> of the troublesome devices is well within spec of my computer USB ports. I
> am running XP Professional which is always kept updated and I religiously
> keep my virus program etc up to date and also run a firewall so a virus etc
> is not the problem.
>
> Cheers
>
> Rod Gayford
>
>

There is a recipe here. Basically, doing this is to force Windows to
re-enumerate the USB hardware.

http://www.usbman.com/Guides/Cleanup Device Manager Safe Mode.htm

Paul
 
Paul wrote:
> Tenshodman wrote:
>> I was running a powered USB hub off my desktop with a couple of
>> devices running off it for ages without incident. My problems started
>> when I took the computer out of suspend (as I always do) and the
>> computer had frozen up. I rebooted and an error message came up saying
>> that a USB device had malfunctioned and was not recognised. It turned
>> out to be the USB hub with the computer functioning normally once I
>> unplugged the USB hub. Now my mouse and other devices such as a web
>> camera work OK. However, when I try and use a multi-card reader and
>> then my digital camera (to download digital photos) I receive the same
>> error message and cannot get these devices to work. Does anyone have
>> any suggestions. I have checked and the power needs of the troublesome
>> devices is well within spec of my computer USB ports. I am running XP
>> Professional which is always kept updated and I religiously keep my
>> virus program etc up to date and also run a firewall so a virus etc is
>> not the problem.
>>
>> Cheers
>>
>> Rod Gayford
>>
>
> There is a recipe here. Basically, doing this is to force Windows to
> re-enumerate the USB hardware.
>
> http://www.usbman.com/Guides/Cleanup Device Manager Safe Mode.htm
>
> Paul
Solution warns about USB mouse possibly not working. But if you also
have a wireless USB keyboard that won't work either. Been there, done
that. System Restore solved problem.

Bill
 
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