usb not working.


M

mark

About 3 weeks ago (may 2008) I found that one of our pc's had lost its
usb functionality. Xp pro, installed and running for 3 years.
It has a ps/2 keyboard, ms usb optical mouse and occasionally has 2
different types of samsung flash based mp3 players connected.
After much fiddling I declared the usb controller dead (pc was 8 years
old) and swapped monitor, keyboards, mouse etc to another box running xp
pro fresh install.
3 weeks later I have the very same problem on this box.
That particular box had run xp pro for 3 years without a hitch with a
gaming usb keyboard and gaming usb mouse and a usb external drive with
no problems.

The symptoms (identical on both boxes);
Mouse is found to be frozen at log on to xp.
Inspection of device manager shows following under
universal serial bus controllers:

standard enhance pci to usb host controller
standard openhcd usb host controller

both with a black exclamation mark on a yellow back ground

right clicking either brings up a code 41 error message.

I have tried countess attempts at uninstalling them, rebooting, scanning
for hardware changes.
Updating drivers results in a message saying the driver is fine.

Uninstalled sp3 back to sp2.
Checked bios for usb settings enabled
Changed bios setting to enable/disbale pnp OS.
Added a registery key 'usb' with a 'dword value of
DisableSelectiveSuspend set to '1'
Also looked in registery for key that has 'filters' (?) but it did not
appear to exist.

I am now baffled.
Please help...
 
Ad

Advertisements

M

mark

mark said:
Inspection of device manager shows following under
universal serial bus controllers:

standard enhance pci to usb host controller
standard openhcd usb host controller

both with a black exclamation mark on a yellow back ground

I guess I should add; that is ALL there is this section, nothing else
except these two items. No USB hub or anything and the PC has 10 ports
altogether.

I cant believe I have had 2 separate PC's do this and there isn’t a
solution.
 
M

mark

Kelly said:
No - on the left.
It still doesn't work :(
I tried it twice; the second time after removing the 2 host controllers

I'm still baffled as to what happened to the root hub........
 
Ad

Advertisements

M

mark

mark said:
It still doesn't work :(
I tried it twice; the second time after removing the 2 host controllers

I'm still baffled as to what happened to the root hub........

Well I fixed it by a full reinstall.
Repair did nothing.
Now its working fine.
I'm still baffled as to what caused the root hubs to disappear.
I have taken the precaution of unticking the 'allow xp to switch this
device off' box in the root hubs properties.

Thanks for listening...
 
H

hrvgds

where exactly is the "allow xp to switch device off" option? I'd rather not
have to go through reinstalling parts of my dell laptop--I have enough
problems with it as it is.

Autumn
 
Ad

Advertisements

M

mark

hrvgds said:
where exactly is the "allow xp to switch device off" option? I'd rather not
have to go through reinstalling parts of my dell laptop--I have enough
problems with it as it is.

Autumn

Control panel>Device manager>usb controllers

right click each hub and choose properties and then choose power
management

Make sure that the little box labelled:
'allow the computer to turn off this device to save power'
is NOT checked.
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Top