Wed Jul 08, 2020 9:01 pm
We'll need more details to help.
The OS you specified works fine on both of my Pi4 computers, so the problem is something in your setup (power supply, monitor, cables, etc).
It is known that the Pi4 has trouble with 1366x768 resolution displays.
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?