How to access the terminal in Grass 7.0.4?
You can start program with -gtext or -text param instead of -gui (included in Start Menu shortcut).
"-gtext" param opens GUI dialog to select working mapset first. When you use -text param you can set mapset directly in command, eg.
"C:\Program Files\GRASS GIS 7.0.4\grass70.bat" -text C:\Location\MAPSET
More info in GRASS manual - GRASS startup program https://grass.osgeo.org/grass73/manuals/grass7.html