Exactly the same thing happened to me. To be honest, I don't see any reason
to feel stupid

- ATI recommend that you delete the old drivers before
installing new ones so we were only following instructions.
Luckily, trying the ATI drivers was the first thing I did following the 5728
install so it was quicker to flatten the hard drive and re-install 5728 than
struggle with the video drivers.
Whether there's a problem in Vista when you try to delete drivers for an
"essential service", I'm not sure but I did notice a similar issue with the
network drivers if I tried to delete the Vista-supplied ones while the
network was still connected - namely the Vista drivers tried to re-install
themselves before I had chance to begin installing the new ones.
John.
--
"Tim_Mac" <> wrote in message
news:61016B1D-6CDE-4946-B27C-...
> hi,
> yes i feel a bit stupid... i was pleased to see Vista had the option to
> delete the driver software when you uninstall a driver, so i tried it out
> on the Microsoft ATI WDDM driver before changing to the ATI catalyst
> driver to see if i could get glass.
> the catalyst driver didn't work, and now i can't revert to the WDDM driver
> either. what's more, i have extracted the install.wim file from build
> 5728 and i can see the WDDM drivers there in the
> \Windows\System32\DriverStore\FileRepository\atiil hag.inf_a561f9b9 folder.
> i can point the update-driver wizard to this folder, and select my
> matching device, X1600 pro, and then click Next, it just says "Windows
> cannot find the file specified".
>
> i tried copying the files out of the mounted WIM onto the local disk and
> install the drivers from there but got the same result. anyone know how i
> can use the WDDM driver again?
> many thanks in advance
> tim