With a new Dell (Dell 3) I set up a network with the old one (Dell 2).  This morning Dell 2 Network Places told me that they couldn't open files.  Shortly after all the folders and files in My Network Places just disappeared.

Network Places folders & files seem normal on at Dell 3 except that the Dell 2 stuff also simply disappeared.

Do I go through the complete setup process again?  Or might there be something else at work here?

Help would be greatly appreciated.