usb not working

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Guest

Hi
Recently all my usb's stopped working , all at the same time.
I was using the pc wanted to print something and nothing tried other usb
devices nothing.
In device manager it says nothing is wrong.Also checked the bios usb are
enabled.
any help appreciated
thanks
paula
 
Paula, are your USB Devices connected to a powered hub or directly to the
USB connectors on the computer? It may be
that too many were connected and your System wasnt able to handle the
load. You could try disconnecting all the USB
Devices and then rt click MyComputer>select Properties>Hardware>Device
Manager>USB Controllers. rt click on each
one and choose uninstall. Then restart and reconnect your USB Devices one
at a time. Check each one for proper functioning.
 
Hi
There was only 2 usb devices connected.
I have already disconnected all the usb devices done the uninstall thing in
device manager restarted pc and still nothing.The devices were connected
directly to the usb's on my pc.
The usb's are still giving power as the box i have for my voip phone still
powers up when i connect it to the usb, but the pc does not find it
automatically or if i choose install new hardware. My printer came with
istallation disc but when i plug it into the usb it does not find it either.
Do you think if buy an external usb thingy ( sorry been living in holland
for a few years now and starting to forget what things are called in english)
As the usb still have power that will work ???
Thanks
Paula
 
Paula said:
Hi
Recently all my usb's stopped working , all at the same time.
I was using the pc wanted to print something and nothing tried other usb
devices nothing.
In device manager it says nothing is wrong.Also checked the bios usb are
enabled.
any help appreciated
thanks
paula
Click to expand...

Can you tell us the kind of computer ?

Or more particularly, what kind of make and model of motherboard ?

There was one chip, which had a problem with static electricity, and
the USB ports could be damaged. The most catastrophic kind of failure
with that chip (Intel ICH5/ICH5R) causes a butn mark on the top of the
chip. The computer won't start again, if it burns like that. When the
less severe form of failure occurs, there is no burn mark on the
top, but the USB ports stop working. And yet, the Device Manager
will claim they are all OK. Fixing either kind of problem with the
ICH5, requires soldering a new chip in place of the damaged one
(under warranty). And people who get it fixed, can even have the
same failure happen to the replacement chip (not too many people have
been that unlucky).

http://www.abxzone.com/forums/showthread.php?t=84122

I've seen perhaps 10 reports of that kind of problem, with Intel ICH5.

Paul
 
Hi
It is a sony Vaio, RS pcv-RS602.
My husband had the back of the computer and we did not see any burn marks.
If you can tell me where i can find out what make and model of motherboard i
have i will find out.
Thanks
Paula
 
Paula said:
Hi
It is a sony Vaio, RS pcv-RS602.
My husband had the back of the computer and we did not see any burn marks.
If you can tell me where i can find out what make and model of motherboard i
have i will find out.
Thanks
Paula
Click to expand...

The details here, say the chipset on pcv-RS602 is 865PE. And the Southbridge
of that chipset is ICH5, which is the chip I mentioned below. So you could well
have had a complete USB failure caused by static electricity. It is
not your fault - there is something wrong with the design of the chip,
that makes it weak. There is only one public admission of a problem, and
zero information from Intel about it.

http://www.dooyoo.co.uk/pc-desktops/sony-vaio-pcv-rs602/details/

You can check the details of your system, using CPUZ.

http://www.cpuid.com/cpuz.php
http://www.cpuid.com/download/cpu-z-141.zip

You can try installing a PCI USB2 card in the computer, to replace the
non-functional USB ports. That will not be sufficient to make a USB
keyboard work in the BIOS screens, and that is the only weakness of
using a PCI USB2 card as a repair. If you want to access the BIOS
screens, when your USB ports are broken, a PS/2 keyboard is best.

If the computer was under warranty, getting the ICH5 chip replaced would be
the thing to do. But at the moment, I think a lot of people with an
ICH5 on their motherboard (such as the computer I'm typing this on),
have no warranty left. In which case, buying a PCI USB2 card might
be the cheapest alternative.

http://www.newegg.com/Product/ProductReview.aspx?Item=N82E16815166002

Paul
 
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