PI 4 no video

[bdrmachine]

After a 2 month wait, today my PI 4's arrived. I loaded a 16GB sd card with the latest raspbian and connected it all up. My monitor never displays a thing. I see the red led on the pi with a few quick blinks from the green led and the voltages test out fine. Both PI's act the same. I have also pulled working sd cards from prior pi versions with no change. Any suggestions? What brand / style of adapters are you guys using to convert to the micro HDMI connectors? Is there a adapter you could suggest to convert DVI-D to Micro HDMI?

Thanks Brian

[Gavinmc42]

Pulling working SD cards from old Pi's won't work.
You need the new Buster for Pi4's. it has the new GPU drivers.

[bdrmachine]

Thanks for the reply. I loaded a sd with 2019-07-10-raspbian-buster-full.img with no luck. I will try a second sd with a fresh down load of 2019-07-10-raspbian-buster-full.img.

Thanks

[W. H. Heydt]

After a 2 month wait, today my PI 4's arrived. I loaded a 16GB sd card with the latest raspbian and connected it all up. My monitor never displays a thing. I see the red led on the pi with a few quick blinks from the green led and the voltages test out fine. Both PI's act the same. I have also pulled working sd cards from prior pi versions with no change. Any suggestions? What brand / style of adapters are you guys using to convert to the micro HDMI connectors? Is there a adapter you could suggest to convert DVI-D to Micro HDMI?

Thanks Brian

More to the point, are you sure you're connecting to the correct microHDMI port? You should be using the one closest to the power connector.

[bdrmachine]

For anyone that may experience the same problem here is what I found:

First, one of the two pi's appears to have a corrupt bootloader (I will look into this further).
Second the original sd card had some kind of error and the fresh card fixed the video / startup problem.