I'm not an expert on Dell or anything, but that path is a user account. Dell have an account on that laptop, presumably for remote access, community access or fault fixing. Either way, it is just a user account. If you deleted it, this error message will go away.
Bit of a sledgehammer to crack a nut perhaps, but if it were mine I would right click "My Computer", choose "Manage", doubleclick "Local Users and Groups", choose Users. At the right pane, choose the Dell account, rightclick and choose "delete".