does it do this when the USB stick is not inserted?
it it does it only when USB stick is present then try a different USB stick.
more than likely this is not the case though…
in which case, the next course of action(*) is to try to re-write the sdcard image…
id preferably use a new sdcard at the same time - just because they are cheap, and it simulatenosly removes the possibility of an sdcard failure.
this is covered here:
this will almost certainly cure the issue…
(I should point out that the Organelle “freezing” would not normally corrupt the sdcard , its even pretty unlucky for it to corrupt the usb card … but perhaps you were just ‘unlucky’)
(*) if you have decent linux experience, then you could connect an HDMI monitor, and see if its even booting - and whats happening - but even if this is possible, your going to need some reasonable linux skills to sort it out - and frankly its more effort than rebuilding the image 