pi 5 no video

I’ve flashed the firmware from rpi. And went to connect it to my tv and I get no video is there anything to do do get this to work.

I’d like to be able to use this a desktop on my tv

Well after racking my brain. And playing coding and scripts. I was able to get it working but now I have to turn the screen when it’s on my 55 inch tv.

Well I’ll rack my brain some more.

There is a lot of info lacking, like: - Type of Pi? - Type of video connection HDMI/Analog composite video? - TV model? And most important, what have you done? - Config? - Guide? ...