Points displaying as squares

Hi, I just installed Rhino 7 on a new windows 10 computer and points are displaying as squares instead of the normal circles. Any way to adjust this?

It’s also showing as squares in grasshopper even though the point flavor is set to “cross”

_documentProperties (pc) _preferences (mac)
→ Display modes → Objects → Points → Control Point Style (4 options… )
maybe reseting display modes ?

does it help ?

Turns out it was a missing driver for my nvidia graphics card! thanks for your help though!