CM3 White screen
#2
Sounds like your problem is the ribbon.
It does go over the black piece, but if you can pull it out it isn't locked good enough. The black flags on either side should be pushed all the way back against the connector. If they're not flush with it they're not locked.

As for needing to power off by unplugging the battery, I think it could be a couple things, but the most likely (to me) is that it isn't due to OS lock up (there's not much there to get locked up in the first place unless your installation went goofy), it seems more likely to me that you're trying to turn it off before it's fully booted up. I don't think you can use the power button to turn it off until you're in retropie itself, and it takes a bit to get in there. When it's all working good, it doesn't seem to take very long, but I know if the screen is just staying white the whole time, it could seem like it takes a while. Once in retropie though, holding the power for like 5 sec should do it.

An easy test would be to plug it into an external monitor. If it's working on the monitor, you know the OS is fine and it's a problem with your screen. If there's a problem with the screen, it's likely the ribbon isn't connected well enough (you shouldn't be able to pull it out)

If it isn't working on the monitor, reflash your sd card and make sure you are using the CM3 file rather than the Zero file, and make sure that you are using something like Etcher to write it (you can't just copy/paste the image to the sd, it has to be written to it with an app like that)
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Messages In This Thread
CM3 White screen - by Somanbra - 07-09-2021, 09:02 PM
RE: CM3 White screen - by StonyYodelers - 07-10-2021, 12:54 AM
RE: CM3 White screen - by Flavor - 07-10-2021, 02:50 AM
RE: CM3 White screen - by Somanbra - 07-10-2021, 08:14 AM
RE: CM3 White screen - by Flavor - 07-10-2021, 08:20 AM
RE: CM3 White screen - by Somanbra - 07-10-2021, 08:49 AM
RE: CM3 White screen - by Somanbra - 07-12-2021, 06:49 AM
RE: CM3 White screen - by StonyYodelers - 07-12-2021, 07:50 AM
RE: CM3 White screen - by Flavor - 07-13-2021, 01:11 AM
RE: CM3 White screen - by Somanbra - 07-13-2021, 11:55 AM
RE: CM3 White screen - by StonyYodelers - 07-13-2021, 11:58 PM
RE: CM3 White screen - by Flavor - 07-14-2021, 12:38 AM
RE: CM3 White screen - by Somanbra - 07-14-2021, 07:51 AM
RE: CM3 White screen - by StonyYodelers - 07-15-2021, 12:52 AM
RE: CM3 White screen - by Somanbra - 07-15-2021, 06:56 AM

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