Error 1327. Invalid Drive G:/ Impossible to install Steam

[Acero]

Hello,
Some time ago I installed Steam on an external drive G quest'ulitmo then just broke and all the data inside were lost as non-recoverable ...
Now let me get back my steam with EUR 300 games in. But I can not because when I start the installation will start me this error: Error 1327. Invalid Drive G :/
I've followed all the procedures to remove Steam from the PC and I can not find this name (Steam or Valve) anywhere else ... I can not install to the same
PLEASE HELP ME!!
I do not want to throw all that money to the wind

[WhereIsBusmin]

Try this.