Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations wOOdy-Soft on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

adsl connected, but no dns?

Status
Not open for further replies.

kusazero

Technical User
Sep 29, 2003
65
CN
hi, for some weird reason, my computer experience some lagging, then all domain names are un-resolvable, IPs cant be connected.

i am using adsl using pppoe to connect to my isp. i can login to my account ok, and the account seems to be ok (i am posting this using the SAME adsl/wiring/account from my laptop).

anyone have any idea how to go about? or some direction to resolve this? i had already input manually the dns servers' ip into my tcp/ip settings, still no go.

i've tried 3 different browsers, IM clients (icq/msn), and even world of warcraft. none of them seems to be able to connect. all the apps return their error message instantly, so, i am guessing winxp is telling them my computer is not conencted?

thanks
 
Do you have a firewall installed? This could be causing the problems you describe.
Also try putting the DNS into your modem/router.

 
Have you set your TCP/IP settings to automaticaly gain DNS settings? If not, as Happo says, enter them onto your modem if possible.

You say you can connect OK (I assume you have a PC and a laptop...), so have you tried pinging an IP adress for a web site - 198.133.219.25 or 66.102.9.99 .

If things work fine from your laptop, I may think that there is somehing wrong with the connection for your PC. Can you ping your default gateway? Also, if you do an ipconfig /all, do you see a DNS server adress? Try pinging it and let me know how you get on.
 
Lots of possibilities and issues here:

- You don't need to hardcode any DNS server addresses in your modem or router. Both will obtain them automatically.

- You should never need to hardcode them in Windows either, as they should obtain them automatically from the modem or router.

- Your laptop is working, so there is nothing wrong on the modem/router side

- In "Network connections", make sure the LAN connection (if ethernet is used) shows a valid IP address. If you use a router, it will most likely be 192.168.0.x, 192.168.1.x, or 192.168.2.x

- Try powering the desktop off for a few seconds, then turn it back on.

- If you can't ping the IP address of a website (try more than one since some don't respond), then there is something wrong with your network settings. You should definitely be able to ping and/or log into the router if you have one.

- Check your hosts file in notepad (C:\Windows\system32\drivers\etc). Only leave the loopback address in there. It's possible that spyware/adware/trojan has infected this file and placed a bunch or erroneous addresses in there.

- Do a thorough scan for spyware/adware using Spybot, Lavasoft's Ad-aware, and/or PestPatrol. HiJack This! is another app you can use as a last resort. The more you apps you scan with, the more you will find. Not one of them will find everything on its own.


The list could go on and on...

To narrow it down, give us some perspective on your configuration (how many PC's/laptops, ethernet or wireless, did it ever work?, make/model of router, etc)

~cdogg
"Insanity: doing the same thing over and over again and expecting different results." - Albert Einstein
[tab][navy]For general rules and guidelines to get better answers, click here:[/navy] faq219-2884
 
Google winsockfix, download the winsockfix file and run it and you should be fixed.
 
WinXP Connectivity Issues
Lost Connectivity after Registry or Malware Cleanup
faq779-4625
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top