Network places that should not appear

Hi ; I meet the following problem ; attached to my PC are three drives which correspond to external drives ( not a NAS but something alike ) ; these drives should not appear any more ; they do not appear in Windows explorer; but they do under network places ; the drives are out of work , server is OFF ; what should I do ; all attempts were unsuccessful ? Thanks for paying attention

If you fully exit Opus (use File->Exit Directory Opus; don't just close the window) and then re-launch it, are they still there?

What kind of drives are they; how are they attached/mounted?