On bbs.teclast told me that this is a problem with the hardware. if the boot override is empty, it’s need repair from the manufacturer or exchange a device.
Hello Coldreboot CAN Put the connection / link , the source of the news ..
I also have this problem .
It was presented to only the second day of use .
for no reason.
I would like to send back my x98 pro tinydeal a guarantee or replacement .
and I would like to attach this news .
Thank you