I used the last release (10.0.3) for Raspberry 4 and made the SD-Card image with windows.
The Paspberry Pi4 does not boot at all, always a blue screen changes with a black screen forever. So i tried the image 10.0.2 and the same happened again.
Then i connected the RP4 to my Audio Cinema System (instead of the monitor) and it booted and finished installation without a problem.
For the unsuccessful boot, a HDMI Monitor with 1920x1200 resolution was connected. Then i Used my Home Cinema with AVR receiver and Beamer with UDH resolution (there it booted and installed the system without a problem).
Maybe there is a problem with the connected video devices during first boot? (the not so usual resolution of 1920 x 1200?) For me it looks like the display could not be "initialized" when my monitor was connected and it tries again and again and ...