[Samba] Windows 7 can't see Pi Samba server

[DavidA]

Hi

I have configured a Raspberry Pi (running Raspbian o/s) to act as a Samba
server to share files with my home Windows workgroup. One of my Windows 7
laptops can see the share fine, but the other WIndows 7 laptop refuses to
see the Pi server at all. I have checked all the obvious things (Workgroup
name, password etc) and don't know what else to do. I would welcome any
suggestions. In case it helps, below is the active content of my smb.conf
file.

Best regards

David

smb.conf:

[global]
   usershare allow guests = yes
   workgroup = <my workgroup name>
   wins support = true
   map to guest = bad user
   dns proxy = no
   passwd program = /usr/bin/passwd %u
   panic action = /usr/share/samba/panic-action %d
   max log size = 1000
   os level = 20
   passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:*
%n\n *password\supdated\ssuccessfully* .
   log file = /var/log/samba/log.%m
   passdb backend = tdbsam
   pam password change = yes
   server role = standalone server
   obey pam restrictions = yes
   syslog = 0
   unix password sync = yes

[homes]
   comment = Home Directories
   browseable = no
   read only = yes
   create mask = 0700
   directory mask = 0700
   valid users = %S

[printers]
   comment = All Printers
   browseable = no
   path = /var/spool/samba
   printable = yes
   guest ok = no
   read only = yes
   create mask = 0700

[print$]
   comment = Printer Drivers
   path = /var/lib/samba/printers
   browseable = yes
   read only = yes
   guest ok = no

[Data]
   path = /mnt/data
   writeable = yes
   public = yes