SP1 upgrades the USB ports, and it sounds like you have reinstalled the
system without that. I would be sure that was installed, and if so, try
removing the USB drivers to reinstall the new ones.
Go to Start/Run, and type DEVMGMT.MSC , highlight the USB Root Hub
device(s), Action menu, "Uninstall", (do Not put a check in 'delete driver')
then Action menu, "scan for hardware changes", to find the device drivers
again automatically.
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Mark L. Ferguson
..
"jsfraser" <> wrote in message
news

4A47356-7EC5-4736-86F9-...
> I run Vista on Dell XPS 410. My mouse and keyboard recently failed --
> can't
> do anything without them. Dell tried to assist but couldn't. They had me
> reset the motherboard. Then they had me restore the system, whereupon the
> mouse and keyboard worked for a short period (5 minutes or so) and then
> failed again, whereupon I was stuck and couldn't do anything. Dell thinks
> the
> software that runs the drivers for the USB ports is being corrupted.
>
> Does anyone have any ideas as to how I can remedy this problem?
>
> Any help or assistance is greatly appreciated as I'm growing frustrated,
> irritated, and disillusioned.
>
> Thanks.
>
>