Sorry to ask but why did you edit your post? You gave us the solution before from what I saw last time – with Chuwi hi10 forum, could you please link it again?
You chose option 3 you said. I forgot to bookmark that one so please edit again if you can 🙂
Method 3
Unplug keyboard and all peripherals
Press the power key for 2 minutes
Release key 30 seconds
Press the power key for 10 seconds
And there “Miracle”