When you say
It *might* help to reinstall the firmware
You mean to do the "thing" in linux right?
My pc only has one network device, and I changed the HDD because couldnt put the 1Tb HDD working either.
The problem is that, because I thought it was broken I formated and tryed to use it in Windows, and voila, it works.
I think that the problem is
the possibility that the port died
Because I allways had the blue and green light blinking with any hdd, until I discover this forum, that had the possibility to reinstal firmware in linux.
And that light error stops when I insert manually the static IP, so something is working in hdd because, NAS recognize that its no more in DHCP mode, but probably is not working at network port. But only when I connect NAS to the PC it starts with that EDIMAX mac address questining where is the ...1.200 ip.
So something is working at network port also.
How I do this
Another possibility is hooking up a serial port. This gives the possibility to look around in the firmware