Network discovery and file sharing will not enable

[childofthetao]

Hi, I'm using windows 7 x64.

Network discovery and file sharing will not enable. My brother cannot access my shared folder from his computer (we're on a lan).

I read to enable these services:

Computer Browser
DHCP Client
DNS Client
Network Connections
Network Location Awareness
Remote Procedure Call (RPC)
Server
TCP/IP Netbios helper
Workstation

One or two were disabled so I started them. However Server will not start, it says: "The dependancy service or group failed to start."

Any help appreciated.
Thanks