Installation mistakes

Rhino Rhino for Windows
1

hey everyone.
i have a problems with Rhino6
i just downloaded program for my introduction course. but all the lignes were invusible( only if i select them)
then i tried to change the lignetype and that helped, and now i could see every linetype exept the continuous one.
but when i tried to make surfaces and i was able to see only them without bourdlines
all this makes it impossible to learn this program

i even deinstal and dounloaded the program one more time, and everything was the same

if anyone have any suggestions about how to fix it, i whould appeciate it

2

Hello- in Options > View > OpenGL page, please un-check the setting for ‘GPU Tessellation’ and see if that helps. If so, you may want to update your video drivers and try again with GPU Tessellation on as it is much faster if it works.

-Pascal