BIOS of Intel Atom Tablet or TV Box are poorly design. You can soft brick if config BIOS incorrectly. Assuming that you are not disable USB port. You could connect USB keyboard to device and enter BIOS. Although it wouldn’t show anything on screen. This is how you might able to un-brick your device. In my case, I soft bricked my Chinese made Intel X5-z8300 TV Box.
- Hit “Del” repeatedly about 5-10 sec to enter BIOS. Wait for another 5-10 sec before proceed
- Press “F3” then “Enter” (Load Optimized Defaults)
- Press “F4” then “Enter” (Save & Exit)
Hope It could help you, too.