"Invalid command: salvage" and "Invalid command: salvagewallet"
You'll only get that result in Bitcoin Core so you must have missed/misunderstood my reply to BitMaxz's post. Use "bitcoin-wallet" tool which I've pointed-out in my post.
I try do exactly as you said. I went into the bitcoin core in the folder where the exe is located. There I launched a terminal and pointed the path to my broken walletdat