The USB Circuitry on the HP Devices both failed ?
Likely not. The problem may be in hardware, in that the USB ports may not
have enough current capability.
Another issue may be a change in the USB subsystem (microsoft) At some
point, Microsoft changed the USB support to more closely conform to the
standards. This did cause problems, mainly with devices that really did not
comply completely with the standard. Understand that the "devices" can be
such things as a printer, or even the USB support chip set in the computer.
Somewhere in the MSKB is an article that explains a "rollback" proceedure.
When all else fails, I usually end up uninstalling the USB ports and
controllers, and then reinstalling them. Obviously, this can cause problems
if the keyboard and mouse use a USB interface. In this case, I usually use a
PS/2 keyboard and mouse wjile I'm dinking with the USB system.
The process I use in summary
Remove/disconnect USB devices other than Mouse and Keyboard and uninstall
drivers
Shutdown
Connect a PS/2 Keyboard & Mouse
Boot
Uninstall the USB ports and Controllers
http://www.support.microsoft.com/se...spid=1173&qryWt=&mode=r&cus=False&range=1-200
Sorry I did not have enough time to find the referenced proceedure, and had
to list the problem index instead