My problem is that I toke out the HDD and wipe out; the disk is fine; but it does not change any way the blinking red state of the board; and WD says that now it is off warranty because of that.
That said, I have tried to rebuild the HDD with the method of Fox-Exe:
with the same result: red blinking front light and green lights on the network plug; it does appear that it doesn’t boot or some error on booting