This is a bit of a catch-22, as the only way around this problem is to
install twice. You will need to do one of the following:
a) Reinstall cleanly the original operating system that you upgraded, then
do the Vista upgrade.
b) Boot the system with the upgrade disk, do not enter a product key and
choose the appropriate version to install. Once it has completed, "upgrade"
it by inserting the disk into the running OS and rerun the installation,
this time using your supplied product key.
Please note, regardless of which path you take you will need to use the
phone activation method when the time comes as the product key will be
reported as being in use. You will need to get a rep on the line if the
automated phone activation sequence fails, just hold on when it does.
Best of Luck,
Rick Rogers, aka "Nutcase" - Microsoft MVP
Windows help - www.rickrogers.org
My thoughts http://rick-mvp.blogspot.com
"Gary Roach" <firstname.lastname@example.org> wrote in message
>I have an installation of Vista Home Premium that is unbootable. It won't
>even boot into safe mode. I want to do a repair install but I get the
>message "to use the product key you entered, start the installation from
>your existing version of Windows". Sadly I can't do this. If I could I
>wouldn't need the repair! Please help me.
> Gary Roach
> ADB Services