So no graphics, just a text login prompt?
Did you install the driver like this?
http://www.mepis.org/docs/en/index.p..._nvidia_driver
At the time of my install the nvidia-new driver was broken and I was forced to use nvidia-legacy. The card is old but it is in the geforce4 range so legacy
shouldn't have been necessary. Maybe another member knows if that situation has changed.
What errors pop up if "startx" is entered at the prompt?
For a bit of selfhelp, try entering a search for the exact card model at the mepislovers forum. Even with nvidia, some cards can be more grief than others.