Something to try that might clear the issue: After plugging in the Compute Stick, hold in the power button until the power LED goes off completely (should take ~4 seconds). Release the power button and then press and release it again.
If the LED comes on and stays solid, whatever was wrong will have been cleared.
Hope this helps,
And I tried turning it off by holding the power button. About four seconds until the LED is off. But it doesnt automatically boot again. I have to unplug the power source, wait several seconds and then plug it in again to see the LED flicker again.
Thank you for that information.
Please try with a BIOS recovery method, here you can find the steps: https://www.intel.com/content/www/us/en/support/articles/000005902/mini-pcs/intel-compute-sticks.html and the BIOS file here: Download BIOS Update [SCCHTAX5.86A]