Re: "USB Device Not Recognized" in USB2 ports but is recognized on by smlunatick
smlunatick
Sun Mar 23 08:11:20 PDT 2008
On Mar 22, 6:00=A0pm, "Carole UK" <caroleurchfont(at)googlemail(dot)com>
wrote:
> Hi there,
> I had this exact problem a few weeks (months ?) ago and spent endless hour=
s
> trawling the net for solutions. =A0I found pretty quickly that literally
> hundreds of people were getting this error message at random times when th=
ey
> attached random external devices, for no obvious reason.
> Anyway, cut a long story short, after following zillions of bits of good
> advice and getting no solution, I got the following bit of advice and it
> worked instantly. =A0It lets you see all the devices that have been on you=
r PC
> in the past and are still hanging around like ghosts causing problems.
> basically you uninstall the whole lot, reboot, and let the OS reinstall th=
e
> 'good guys'. =A0Work a treat for me after days of stress. =A0See following=
:
> (It's designed for people who are not necessarily very 'IT Literate' so
> please don't feel patronised =A0:-)))
> **************************************************
> Open a command window : Click on START/RUN then type =A0"cmd" (without the=
> quotes) and click OK A black window will appear with some writing on it.
> Leave the cursor exactly where it is and type (without quotes) =A0:"set
> devmgr_show_nonpresent_devices=3D1"and press return.Another line of typing=
> will appear, the same as the previous one.Now type the following and press=
> return. "start devmgmt.msc" This opens the device manager but with a twist=
.
> From the 'View' menu select "Show hidden devices". =A0Device manager will =
now
> show you every device that has ever been connected whether it is present o=
r
> not (non present devices are greyed). =A0 Now you should be able to find a=
ll
> your devices that don't work and delete them (it doesn't matter if you
> inadvertently delete a working device). =A0This will allow Windows to rede=
tect
> them when you connect them and reinstall them. To cleanup the USB devices,=
> scroll to the bottom and click on the '+' next to 'Universal Serial Bus
> Controllers'.Right-click on each item, except the first few at the top whi=
ch
> are called 'Host Controllers'.When you right-click, you will be given a
> menu - choose 'uninstall, and click OK.When they are all gone, you will ju=
st
> have 3-4 Host Controllers left.If there are any other devices, apart from
> the USB devices, that have a yellow or red exclamation mark or question ma=
rk
> against them - they also have a problem - have a look and also uninstall
> those items. Close the window, and the black 'cmd' window. =A0Reboot.As th=
e PC
> boots up there will be a few 'bubbles' in the bottom left-hand corner of t=
he
> taskbar, saying 'Found New Hardware'. =A0Don't press any keys, just leave =
it a
> few minutes to finish re-installing everything.All
> done.**************************************
> let me know how you get on. =A0Carole
>
> "smlunatick" <yves...@gmail.com> wrote in message
>
> news:16775162-f946-4533-94e6-daec5a478e00@59g2000hsb.googlegroups.com...
> On Mar 21, 8:11 pm, yawnmoth <terra1...@yahoo.com> wrote:
>
>
>
>
>
> > I bought a new USB2 PCI card and am having some problems using it.
> > I've plugged it in alright and I'm able to successfully plug in a USB
> > optical mouse into each external USB port on the PCI card and it works
> > in each and every one of them. Same thing with a 128MB USB stick.
>
> > Both of these also work in the USB1 ports I have on the front of the
> > computer.
>
> > The problem I'm experiencing occurs when I try to plug a USB HDD
> > enclosure into the USB2 ports. It works just fine in the USB1 ones
> > (the computer reacts much as it would when a USB stick is inserted
> > into it). When I plug it into the USB2 ports, I get the following
> > error:
>
> > ----------------------------
>
> > USB Device Not Recognized
>
> > One of the USB devices attached to this computer has malfunctioned,
> > and Windows does not recognize it. For assistance in solving this
> > problem, click this message.
>
> > I click on it and get a useless "Try reconnecting the device. If
> > Windows still does not recognize it, replace the device."
>
> > ----------------------------
>
> > My question is... why?
>
> > Why would something be recognized by USB1 ports but not by USB2 ports
> > added by a PCI card?
>
> > I'm running Windows XP SP2.
>
> I've had this problem some time ago. =A0Turned out the USB 2 add-on card
> was slightly not compatible with my system. =A0I had a USB 2.0 add-on
> card based on ALi USB chips and it cause a lot of problems (loss of
> USb 2 port, loss of wireless networks and PC not start.) =A0I have since
> replaced then and all seems to be ok.- Hide quoted text -
>
> - Show quoted text -
Copy these line into abatch" file:
et devmgr_show_nonpresent_devices=3D1
cd %SystemRoot%\System32
start devmgmt.msc