Windows 7: Connected to WiFi router but no internet acess!

I can connect by Ethernet wire, but not wirelessly unless i go through the signal extender. Going through the wire or the Signal extender I can surf the net. Connecting wirelessly directly to the router I get no internet. DNS can not be resolved.
My friends Windows 7 laptop has no problem, and neather has my ipod 5g.

Hi.
Good news, sort of... I did some research into the WiFi routers radio signal. I found that it is very intermittent. I think it is ether the radio dieing, or there is a lot of interference in my building. I am attaching a screen grab from a software radio signal analyser. It's called Inssider by Metageek.net. So I think I will have to look into getting a new router.
For now I am going to call this solved. I will update you on how the new router works out.
Thank you for your patience with me and all the help.



Note: Alpha1-N is my WiFi router, the other signal is the extender.

Bump...

Ok the bigger problem here is that everyone around you seems to be using channel 1, this will cause endless connection problems.

You will also need to change the security on the main router to WPA2 with AES encryption.

You also need to change channels in your routers settings page, try channel 11 on the router and unplug the extender as it's also on channel 1.

The signal strength for both is very strong so I can't think of any reason to use the extender.

It's also true that this extender is not configured properly to work with your router, the extender, as I mentioned before is in fact a separate access point which means unless it's configured correctly it will cause connection problems that won't just go away.

If you really want to use the extender, at the very least you need to disable DHCP on the extender and you will also need to change the gateway IP to fit into the subnet of the main router.

With signal strength on the router being so good you should not need to use the extender at all.

I would consider updating the firmware on the router, then make sure you are using a different channel, 11 or 6 should be good in your area, anything but channel 1. You must also use WPA2 security with AES encryption.

Update.
I got a new router, and the signal is rock solid. I have shut down the extender, as I don't need it any more. I only used it becouse of the problem with the signal being low. So, problem solved.

P.S. I did change the channel on the old router to test it.
Also I do use the WPA2 with AES encryption security.

Thanks.

That's good to hear, might have been the router all along.

It does pay to use a channel that everyone else isn't using, better signal less dropped packets etc.

Certainly WPA2 and AES.

The 802.11n only setting on your new routers set up page will allow you to obtain a much faster connection.

Using channel bonding setting set too 20-40mhz setting is also a good option for even better wireless speeds, potentially doubling your wireless speeds.

When combined, these two settings can allow you to achieve 300mbps wireless.

Thanks again for all your help.