This is what I have done since dicovering that my modem/router set up have not been working properly since a 4 hour power outage yesterday. Prior to power outage we had the following configuration:
motorola modem/linksys wireless router wrt120n/dell pc/msi netbook/asus netbook with a secure wireless network.
Both netbooks and pc were operating normally and could connect to the internet. since the power outage we can only run the pc or a netbook at a time and it must be connected directly to the modem through an ethernet cable. The wireless portion of the router isnt working at all. The router shows the network. The modem will connect to the internet. but the modem and router cannot be connected together.
Here's a list of everything I have done so far to attempt to fix the problem.
Shut down router, modem, and computers.
Disconnected all ethernet cables
Reset both router and modem
reconnected ethernet cables
booted modem, then router, then pc
ran setup discs for both modem and router on pc
restored modem and router to factory defaults
reprogrammed router with personal network
Unplugged all ethernet cables.
with router power cord only plugged in hit the reset button for 15 seconds
let go of reset button and plugged router back in
plugged ethernet cable from router into pc
opened IE and navigated to http://192.168.1.1
logged in using
changed "Local IP Address" to 192.168.2.1
clicked "Save Changes"
plugged ethernet cable into router and modem
tried to utilize internet
this worked for 2 hours then was booted off the net again.
Since then have done the following:
disconnected pc ethernet cable from router
plugged netbook ethernet cable into modem directly
Checked Device manager on laptop (mainly because the bf wanted his pc back and i prefer my netbook)
there were no red ! or yellow ? anythings. all is well there
Reset WINSOCK entries to installation defaults
Reset TCP/IP stack to installation defaults
Rebooted the netbook
Did an ip address change
Did Ping Tests
ran windows "repair connection" wizard many many times
rebooted pc and netbooks many many times
ran nbtstat -n
changed ports for pc and netbook ethernet cables
tried checking LAN settings to make sure it was on "auto detect" for pc and netbook (they are)
open IE to navigate to 192.168.1.1 no internet although task bar shows active connection
These are the settings that came up for the ipconfig/all and the nbtstat -n when run on my netbook
Local Area Connection:
Node IpAddress: [192.168.1.xx] Scope Id: 
NetBIOS Local Name Table
Name Type Status
xxxxxxxxx <00> UNIQUE Registered
xxxxxxxxx <20> UNIQUE Registered
MSHOME <00> GROUP Registered
MSHOME <1E> GROUP Registered
MSHOME <1D> UNIQUE Registered
..__MSBROWSE__.<01> GROUP Registered
fihart.. thanks for the reply. I checked the TCP/IP properties like you said and everything is checked. Right now we are all connected again but I have no clue how that happened. Just out of the blue everyone could get on th net at the same time. Maybe the router and modem just needed a chance to re -aquaint themselves I dont know.