I tried both an 8 GB and 32 GB micro sd card that had both worked before the 32 GB is SanDisk
I have flashed them with the raspberry pi imager and tried balena etcher tried octopi stable and tried octopi nightlies
That happened to me earlier today. I had to reflags the sd card using the raspberry pi boot loader make sure to hit the Settings button, fill out your Wi-Fi information, and it worked for me after that.
got the plain green screen and steady light! but it won't boot at all now. it won't even boot to the screen shown in the picture above unless there is no sd card. it looks like it is trying to boot but is unable to.