Wallet.dat corrupt, salvage failed


My system has the following specifications

QT Wallet, Client Wallet (and version) or Web wallet: v2.0.0.0-g32a928e nad latest
Operating System and version: Windo 10 pro , 1803
If web wallet browser name and version:
If desktop wallet (Qt or Client) block # of your client and # of connections:

My problem is that i can not load wallet with my wallet.dat file from end of 2017. In meantime i upgraded PC and got new windows, but i didnt do anything to bitbay folder/wallet on secondary hard drive where it was used last on Oct 2017. I am not sure

When i replace my wallet.dat backup file from 2017 i get error in latest bitbay wallet and the one i installed in 2017.

Error is: Wallet.dat corrupt, salvage failed

Please help

Thanks a lot