this is a device driver (most probably the one of your last installed hardware. remove this last one (click w/t right mousebutton on "this computer" chose devices (i'm usinng duch version so i don't know the words used in us version) & remove the ast installed hardware. (select & click remove)
maybe you will have to unplug all unnececairy hardware (modem, sound, network & ISDN) and reboot (dont forget to unplug your powercable)