Internet Connection help please

I have a Sony Vaio VGN-NS290J running Vista 64 and the card is an Intel WiFi 5100 AGN. (Just purchased)


I can connect to a wireless connection and stay connected for random amounts of time 5 min to 30 min and it will just disconnect. Other times it will show I am connected but I can not load a page.

I then have to diagnose and repair the connection to get back on. Other times I try and repair and I get the following error message:


Windows tried a repair but a problem still exists. Can not communicate with DNS server

I have looked every were for a solution and can not find one. I would really appreciate it if someone has a solution. thanks.

 

when you are able to connect, what is your dns server set to?
what router are you using?

 

Just as a test, log into your router and copy the DNS server information it receives form your ISP

In your wireless connection's IP 4 properties, set the DNS from automatic to manual and plug in those server numbers.

Does that make a difference?

 

goofball- linksys g

gerryf19:

Do you mean the router website were i set up the security?

How do I get the wireless connection's IP 4 properties?

Thank you!

 

In your router, you will have LAN and WAN settings.

Under WAN, you will see your external ip address as well as DNS servers (two to three different server ip addresses

Write those down.

Now, (assuming Vista), go to Network and Sharing Center, and click on MANAGE NETWORK CONNECTIONS on the left. Right click your network adapter and choose PROPERTIES

Scroll down to Internet Protocol V4--double click

Check the radio button on USE THESE SETTINGS FOR DNS at the bottom and type in the addresses from above.

Reboot.

See if you can connect now.

What we are testing here is your router's DHCP function--it may not be correctly forwarding DNS information.


It is also possible that your ISP's DNS servers stink.

instead of doing the above, you could go to OPEN DNS and follow the instructions as a test to see if that will work--this way, you bypass your ISPs DNS servers and use these free;y accessible DNS servers (that often are better than some ISPs anyway)

 

Does it matter that this is not only happening at home but other wireless networks as well?

 

have you install an anti-virus?

 

I installed panda

 

Yes, actually it does.

That means it is not your ISP or router....

Now, the question is how ot proceed.

I'd like to see you add the the opendns settings to your computer and see if the situation changes, but if you'd like to try something else first,

if this is XP
Start > Run
type
CMD
<enter >
in the black box, type
ipconfig /flushdns



If Vista, type
start > type in the search box
CMD
wait a second, and right click on CMD in the top of the start menu and choose RUN AS ADMINISTRATOR

in the black box, type
ipconfig /flushdns


Reboot and see if the situation changes.

If not, do try the OPENDNS and report back

 

Its Vista, I ran the CMD and then typed ipconfig/flushdns rebooted. I have logged into my computer since and had no problems with the internet. It looks like it has worked!

Thank you very much I will follow up in a few more days.

 

Wonderful! Looks like your DNS info was stuck in your DNS cache..that command removes all the old settings and allows it to repopulate

 

Ok well I have not had any problems until now. It was running fine at my home connection now I tried to take it to work today and can not connect to any of the wireless networks... Ahh. You Mentioned opendns, do I run this under CMD as well? Thanks.

 

hmmm, this doesn't make sense....something is missing.

open dns is just a way to use a third party dns server to resolve domains to ip addresses.

When you connect at home, you use your ISP's dns server; when you connect at work, you use your work's dns servers.

Open DNS will allow you to use a third party DNS server to resolve ip addresses to domain names. Your symptoms don't seem to indicate that DNS is the issue.

ipconfig flush simply removes all DNS info from your computer and allows it to start fresh. There is no reason why it should make your home suddenly work and work suddenly stop.

You can try it by following these instructions

https://www.opendns.com/start/computer/

but I don't think it will solve the problem.

I feel like I have confused two threads here going back over the answers--where did you get the wireless card? Which drivers did you use? The ones that came with it, or download fresh ones from the manufacturer's website?