Hello, please i have this problem, every night is tablet turning off, tablet is brand new a i have only battery bar on this. On the tablet is Windows 8.1. Thank you.
Are you using the keyboard case and closing it? On mine doing that eventually wreaks havoc with the touchscreen and causes a shutdown or other issues.
Also Windows 8.1 on my device was really buggy, it would constantly crash and there were other errors. I installed Windows 10 (lot of hassle sorting out drivers) and now it’s more reliable but will still sometimes turn off or crash due to poor quality drivers.
Just had a quick look in Event Viewer and the majority of unplanned shutdowns on my Vi10 Pro are caused by runtimebroker.exe (part of Windows App system).