hi experts I somehow managed to have only the top tenth of the screen visible with dv files. rest black. thought I read that here somewhere but cannot find it. is there a way back to full-screen 
the only thing I changed was
- disable GUI what was the name… real 4k GUI!
- 23.9hz
- 444 10 bit, I thought that’s the preferred setting with 23.9hz…
I changed all back but screen is still broken
thanks!!