It's a shame you don't have the logs from BitDefender, as that would let us know what it removed.
I'm not a great lover of that programme, it has a record of being a little "over zealous" in removing things, and often that can cause more problems than it resolves.
From the Registry export you sent me earlier, it seems that many of the subkeys that should be found in ...... HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall ..... key are missing, and will need to be rebuilt.
That is outside the scope of this forum I'm afraid, and you would be better getting help at one of the forums that deal in that type of problem.
If your e-set log comes back "clean", I'll recommend a few forums where you should be able to get the help you need.