I have done lots of internet research to try and fix my "stuck" Samsung Galaxy 7". No success yet.

It is the tablet as supplied - it has never been updated. Has worked for 6 months, but now when I switch on it shows the Samsung logo and occasionally vibrates but does not go any further.

I found out how to get into System recovery. I tried all the options there, including factory reset. It seems to run that OK, but rebooting after a factory reset did not fix it. It is still stuck.

Tried connecting to Kiess but it does not connect.

Can you please tell me what else to try?