X does not start any more since upgrading to Debian 9.1 with NVIDIA GeForce 7100

[Christopher Barry]

On Mon, 2 Oct 2017 19:39:41 +0200
"Andreas Köhler" <A.Koehler.Tux at gmx.de> wrote:
...snip

>Your card is only supported up to the 304 legacy drivers series.
>It is recommended to install the
>    nvidia-legacy-304xx-driver
>package.

snip...

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
did you try that? if yes, and it failed as well, maybe try the
proprietary nvidia driver from their site (if you are ok with non-free,
of course)

--
Regards,
Christopher Barry