Aerobook unexpected suspension

Hi everybody!
I have a problem with my Chuwi Aerobook. Since 1 year ago, it suspends automatically few minutes have past from the switch on. Not always at the same minute, sometimes 1, other times 15, but aways it happens. Of course, I checked battery, switch off and suspension configuration and I deactivated any automatic switch off/suspension option, but it keeps happening anyway.
May someone help me? It is really annoying and problematic
Thanks in advace