"Required driver could not be installed" message preventing beta 2

I am unable to upgrade from Vista Beta 2 to RC1 because of the following
error message that cancels the install:

Windows installation cannot continue because a required driver could not be
installed.

I have done everything from unplugging all USB devices and physicially
removing all unnecessary PCI cards with no success. Any thoughts?

I tried an upgrade similar to the one you described on one of my computers
and a clean install on the other. The clean install went well, the upgrade
had so many problems I simply wiped it out with a clean install. I had put
anything "important" in a different partition.

"Keith T." wrote:

> I am unable to upgrade from Vista Beta 2 to RC1 because of the following
> error message that cancels the install:
>
> Windows installation cannot continue because a required driver could not be
> installed.
>
> I have done everything from unplugging all USB devices and physicially
> removing all unnecessary PCI cards with no success. Any thoughts?