Digital BW, The Print

For months I have been printing Black only prints on Epson Archieval Matte
paper using MIS Ebony Ink.  However afer a system rebuild I am now not
getting the option of selecting 2880 dpi.

Paper type is Epson Archival Matte
Black ink is selected

The drivers are 5.30 latest from the Epson site.

I have obviously overlooked something, could anybody help?

Thanks

Martin