If the display still manages to blink white-black-white then it's not broken, so that at least is a bit of good news.
Did you remove the external SD card from the device?
Then if this does not work:
[deleted vidme link]
(You might have to use the reset button instead of the power button if the power button is no longer responsive.)
It takes some practice to get it right, so it's quite normal for this method not to work a few times.
If it doesn't work at all then I guess there is no way other than to open up the device and get to the internal SD card slot. A bad SD card could very well be the cause of the issues you describe.
Last edited by pdurrant; 07-25-2021 at 08:33 AM.
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