@Ernst
Yeah i think the battery is awesome for its price.
I dont rmember, as i just received it a couple of days and couple of times. i will check the log later if i encounter the problem again.
And i also have set the power button behaviour.
btw when it happens i need to do hard reset to turn it on again, and just resume the windows as sleep does( I thought it will force turn shutdown).
do u know if my version have bios update and where to download it??