u/scaryone99

I have bought a non working ps4 and was wondering what next steps should i take - the console boots into safe mode. With only option number 7 available. I have downloaded the full reinatall 13.52fw(1gb) and tried to run it - but when i do it copies succesfully and then system restarts. After restart it shows white light and then turns off after ~ 10s with no beeps or anything. And then if i turn it back on again - its showing this screen again. I have tried the following :

1. Replace hdd with a known good one
2. Boot into safemode while holding power button long - it boots there and all options are available. I have tried all options - they result in the same scenario
3. Tried to turn it on without any hdd - it turns on with blue light and the message on screen says that storage was not found.

What my next steps should be? Should i take it apart and try to diagnose on NOR? Or some other steps?