You originally provided very little information. So let's play the twenty-questions game to this connection issue which groovicus
"3)You have not mentioned how your configuration is set up in the router, so again we have to guess."
did as well
what are they plugged in to? I mean, like a modem, or what?
... Do they appear as secure networks? Did you set them up yourself?
... When you're hooked up to the router via cable, check your default gateway
1. What router, make, model?
2. What ISP, dialup, cable, DSL, FIOS?
3. What computer?
4. What Windows system?
5. Is the router allowing SSID at the time you attempt to create a connection?
6. Are the settings in the router matched by the Windows TCP/IP settings?
7. Are you trying to setup the router while in wireless mode? Good routers won't allow it, you need to be wired to build the connection in Windows.
8. Is your WEP or WPA key or password entered in Windows?
9. Is your computer wireless card enabled when you try or is it shut off?
10. Do you have a firewall (other than the Windows firewall) that might be blocking things? If so, are you allowing DHCP, DNS IP addresses to be safe? If you don't know what these are, lookup on wikipedia, please.
11. Is your LAN IP address different than that your roommate has?
12. Is your ISP permitting more than one connection?
13. Does the output from cmd > ipconfig /all make sense?
14. Is the cable modem shared by roommate and you and the router?
15. Have you disabled DHCP on that modem before adding the router, clearly, DHCP is not working for you. The modem should be just a pass-through thing or translate the DSL or cable signals.
16. What different is the roommate doing? what do you mean "he directly..." in your original post? Is he succesful doing wireless connection or is he wired?
17. Is the roommate connecting directly to the router or that modem?
18. When you change things in the router or modem do you follow the sequence of turning off (pc, router, modem) and powering up (modem, wait, router, wait, pc)?
19. Did you read the router instructions how to setup wireless?
20. Did you read Windows instructions how to setup a new network connection parameters?
The chances of two routers going bad at the same time are rather slim.jhsmurray
, good point. But I have a hunch the setup is wrong. He's not communicating with the DHCP server (router or ISP), and/or loosing connection with the ISP DNS servers, and the roommate is not dropping those connections, I think.
Well, that's all the questions I can think of. Some answers might help diagnose the issue