usb no longer works

[Guest]

switched on today and webcam and memory sticks not working. Info bubble says
"usb device malfunctioned, and windows does not recognise it" Device manager
says "unknown device". Have have tried uninstalling and then reinstalling
but same thing happens. HELP!! been at it for about 2 hours now. printer and
bluetooth dongle seem to work ok, but nothing else.

 

[Uncle Grumpy]

switched on today and webcam and memory sticks not working. Info bubble says
"usb device malfunctioned, and windows does not recognise it" Device manager
says "unknown device". Have have tried uninstalling and then reinstalling
but same thing happens. HELP!! been at it for about 2 hours now. printer and
bluetooth dongle seem to work ok, but nothing else.

System restore back a couple days?

 

[M]

switched on today and webcam and memory sticks not working. Info bubble
says
"usb device malfunctioned, and windows does not recognise it" Device
manager
says "unknown device". Have have tried uninstalling and then reinstalling
but same thing happens. HELP!! been at it for about 2 hours now. printer
and
bluetooth dongle seem to work ok, but nothing else.

You could try disabling and then enabling the USB ports in device manager.

 

[Guest]

tried restoring back a couple of times, disabled usb controllers and
rebooted, all to no avail. even took the drastic step of system recovery.
still the same. took webcam and memory sticks to a mates and tested on his
comp, worked fine there. totally out of ideas now

 

[M]

tried restoring back a couple of times, disabled usb controllers and
rebooted, all to no avail. even took the drastic step of system recovery.
still the same. took webcam and memory sticks to a mates and tested on his
comp, worked fine there. totally out of ideas now

Probably the only thing left is to check that USB hasn't become disabled in
the BIOS. If this is OK then it sounds like a hardware fault. You could
add a USB controller card if you have a spare PCI slot.

 

[Guest]

You may wish to try uninstalling the software of the webcam and memory stick
and reinstall it see if that can cause the USB to switch back on

 

[Elmo]

switched on today and webcam and memory sticks not working. Info bubble says
"usb device malfunctioned, and windows does not recognise it" Device manager
says "unknown device". Have have tried uninstalling and then reinstalling
but same thing happens. HELP!! been at it for about 2 hours now. printer and
bluetooth dongle seem to work ok, but nothing else.

Here are some more ideas:

USB Help sites:
http://www.usbman.com/WinME USB Guide.htm

General USB troubleshooting in Windows XP
http://support.microsoft.com/kb/310575

Troubleshooting for USB drives
http://www.uwe-sieber.de/usbtrouble_e.html

 

[Nikhil]

Sometimes motherboard fails to supply proper current to usb devices.
What I suggest is that buy an external powered usb hub. This hub has
an option to provide power from outside .
Then connect your devices to this hub.
I struggled with this problem for an year, than finally solved by
using external powered USB hub.

Please dont forget to post reply.

Nikhil

 

[Guest]

Hi.
I have had this problem for 12 months when a card reader did the same thing.
Could not get it sorted. Recently bought Tomtom sat nav guess what same
problem. Tried everthing suggested and a few more besides. Then I removed the
logitec webcam pro5000 usb lead plugged in the tomtom and hey presto it works
fine. Downloads etc with no problem. As the tomtom is more important to me I
am resisting plugging in the webcam. Could there have been some kind of
device conflict, although nothing showed up. I am a novice really at all this
and only sorted it by trail and error.

Best of luck
Speedy