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Unknown device- no devices plugged and when plugged


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#1
yawjunior

yawjunior

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Side story :
Came back from spring break fired up my computer (which I have not touched in for about a week) my mouse and keyboard were working about 1 minute later both turned off (lights dimmed) seemed weird - I restarted my computer and both were listed as unknown device.


Regardless of what I do I windows keeps showing unknown device on my desktop device manager even when everything usb is removed. Everything I plug into my computer is seen as unknown device ( usb G5 mouse, usb saitek eclipse keyboard, usb external floppy)
Currently have to use a non usb keyboard
What I have tried :
Clean install of windows xp followed by an update. (After being a lil bit frustrated) But this was before I tried 1,2, 3 & 4 listed below.
Result - my usb keyboard and mouse were not detected during installation and a unknown device showed up again
Reinstalled windows again this time with only my non-usb keyboard plugged in
Result : even before I plug anything USB into the computer an unknown device exists

possible solutions I found from google searching ( but did not work)
1) System restore - but it back about 2 weeks, then about 2 months - still..
2) booted in safe mode and uninstalled everything under universal serial bus controller, shutdown pc, booted.
Result - it just reinstalled the controllers and hubs and the unknown device was again installed
3) disconnected all power connections to motherboard and waited for about 40 mins - problem still persists...
4) Selected enable only usb 1.1 in bios (Unknown still showed up) after wards I simply disabled all usb in bios then restarted then renabled both 2.0 and 1.1
- Yes i did connect into all hubs including front and back - though the front ones do not even show up.
Advice by manufacturer tech support (non of them worked)
- removed lithium battery for 30 mins to clear cmos, hit the clear cmos button also.
-flashed bios
Only thing I have not been able to try was something related to msinfo32 because I get an error "windows cannot find"
I tried all my usb mouse and keyboard on my laptop (they both work)
I have tried updating the drivers but simply says the best one already installed (something like that)

For completeness:
I installed my motherboard drivers ( everything the cd came with)
I installed my graphics card driver
My motherboard and graphics card are the only nvidia components I have ( in regards to the unknown device being nvidia)
Before I first reinstalled windows i decided to try and trick the computer by copying the info in keyboad.inf and pasting it over the info in unknown.inf hoping it would recognize the usb device and work - it didn't , probably not the smartest thing.. just a theory and I wanted to try.
Everything seemed to be working fine when I left for the break..
At this point i reinstalled windows again - no luck.
I'll try and remember everything else

I included a pic of the unknown picked up by unknown identifier with the usb mouse plugged in (without it it shows only the upper unknown device)
I tried to upload my setup api its larger than available space.


Any other suggestions I am thinking about just either buying this
http://www.amazon.co...d/dp/B0002M4HU0 and hope I can get some working usb ports
or simply a new motherboard ( Thinking the time I have spent/will spend --could have be spent working to buy one lol)


So anyone have an idea where to go next? or should chances are my usb ports fried?


Computer : custom built
motherboard 750i evga non ftw version

Attached Thumbnails

  • Only_usb_mouse_conected.JPG
  • usbbb.JPG

Edited by yawjunior, 15 March 2009 - 02:11 PM.

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#2
123Runner

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Hi and welcome to geeks to go.

Since it looks to be a USB issue, have you tried any other usb devices in that spot?
Have you tried plugging in to any other usb ports?
I suspect you have usb on the back and on the front. The chances that both are bad/blown are slim.

What shows up in device manager under the hardware tab?
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#3
yawjunior

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Thing is I am not sure exactly which spot is causing the problems but I have tried plugging my keyboard and mouse in other spots - no response.
Under device manager right now it shows
- universal serial bus controllers
Standard OpenHCD Usb host controller
Unknown device
Unknown device
USB root hub
Usb root hub
I uploaded a picture including the power properties for one of the usb root hubs - the other simply has 8 available (have 8 in all)

Is there a way to disable each usb port individually? say one is interfering with the rest?

Edited by yawjunior, 15 March 2009 - 02:13 PM.

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#4
123Runner

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Are you at SP 1 or SP 2?
SP 1 sometimes wont find all the hubs.

Uninstall all the hubs. Shut the computer off and then turn back on. It should rediscover the hubs.
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#5
yawjunior

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it does but unknown device shows up again even after they are uninstalled and the roots are recognized with or without any usb plugged - troubling...

I have done all upadates - SP3 now

Edited by yawjunior, 15 March 2009 - 06:58 PM.

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#6
yawjunior

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Just an update, I bought a 6 port usb 2.0 pci card - my devices are working, thanks for the time trying to help :)
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