Try to recover your compute stick doing the following steps.
a) Remove any additional SD card.
b) Plug the unit to the outlet using the power adapter
c) Use a wire keyboard
d) Turn the stick on and keep tapping F8. When you see the prompt “F8 to Activate Windows 8.1 Recovery Mode”. Follow the recovery steps.
If it is not possible to fix the issue, contact our customer support center for additional information.