Likely a full factory reset is your best option at this point. Not a lot you can do if you can't even connect to your computer.
I would NOT add any content (other than whatever downloads automatically when you sync/update from the Kobo server) until you make sure it's working properly. That way if there happened to be some content that caused the problem it'll be easier to identify it.
There is always the possibility that the memory is failing on the device and it's losing parts of the firmware causing it to fail, but that's a rare problem.
Last edited by robko; 02-18-2018 at 10:17 AM.
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