Thanks for the help. I did try uninstalling all the various USB devices in
the Device Manager multiple times. No luck. I ended up installing a spare
PCI USB 2 card I had and am able to connect everything through there instead
of the ports on my motherboard. Looks like MS has a fix for this problem in
XP:
http://support.microsoft.com/kb/920875
Hopefully they'll release a hotfix for Vista too. Al
ps- I have XP installed on another partition, the motherboard USB jacks work
fine there, so it's definitely have software issue I'm having.
"mikeyhsd" wrote:
> have you tried uninstalling the ROOT HUBS, shutting down for 3-5 minutes,
> rebooting and allowing the system to find and reinstall the USB devices.
>
>
>
> mikeyhsd@sport.rr.com
>
>
>
> "A L" <AL@discussions.microsoft.com> wrote in message news:97982AB4-57B3-4165-93D3-84FFE87F6261@microsoft.com...
> Hello-
>
> All of a sudden a few days ago, many of my USB devices started showing as
> Unknown Devices in the Device Manager. I've read that this sometimes happens
> in WinXP too- but no post that I found about the problem proposed a solution
> (for Vista or XP.) If I disable the "Standard Enhanced PC to USB Host
> Controller", the system then locates drivers for all of the devices, but runs
> them in USB 1.1 (slow!) mode.
>
> I'm seeing this for flash storage devices (thumb drives, flash card readers,
> ipod), logitech quickcam 5000, plantronics USB headset etc. Oddly, my MS
> Intellimouse Explorer 3.0 and APC UPS work fine!
>
> Anyone know what to do?
> I have a ton of USB devices defined in the registry under
> HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Enum\USB\ , but regedit does not
> allow me to remove any of these.
>
> I also unfortunately don't have a System Restore Point to back when my USB
> devices were working.
>
> If anyone has ideas for something to try, please post! Thanks, Al