I bought a Raspberry Pi 3. and wanted to make it a NAS. I played the normal Rasbian software on it before and experimented a bit. everything worked. Now I have downloaded the Open Media vault software with etcher flashed on an SD card and put in it. the Raspberry Pi does not boot. The Raspberry Pi and SD card can not be broken, because I then have to test again the raspbian software on it with the same SD card. then I played the Open Media vault software again and nothing. neither the green LED lights up nor what is displayed in my monitor. did someone ever have that and can help me? Greetings from Germany