1.
Reference Manual. Do not know what I can add that is not in your reference manual:
Reference Manual for MR814v2 Cable/DSL Wireless Router.
a. Restrict Access. See subsection "Restricting Wireless Access to Your Network" within Chapter 3.
b. No Connectivity (Internet?). See Chapter 7, Troubleshooting.
2.
Verify Local Area Network (LAN) Connection. From command window on laptop (Start -> Run -> type "cmd" without quotes, then hit Enter):
a. ping 127.0.0.1 # Verifies TCP/IP stack of laptop
b. ping <your laptop IP address> # Access your network card
c. ping <desktop IP address> # Access another PC on your LAN
d. ping <home router IP address> # Access "gateway" for your LAN
All of the above pings should succeed unless blocked by local software firewalls on the computers.
If any of the above are not successful, please report the error/status messages you see.
3.
Verify Internet Connection. From command window on laptop, try an internet IP address:
a. ping 69.72.169.241 # (IP address of
www.computerhope.com)
then try a fully qualified domain name (FQDN) for an internet website:
c. ping
www.computerhope.com d. ping
www.msn.comPlease report the "ping" results. Successful or error/status message if not.