Nova is in use.
But the power button has been blinking since yesterday, and there is no response.
Factory initialization does not proceed.
The order of blinking (?) is 4, 2, and 7, but there may be some error code, but it’s not easy to find out.
In this state, the app is not responding, and neither the physical button nor the remote control is responding.
If you have experienced or solved the same symptoms, I would appreciate it if you could let me know what you have tried