computer configured properly, DNS not responding

Hello all. I am having a consistent problem with my connection. Pages load very slow or not at all, diagnosing the network connection gives me an error of "Your computer appears to be configured correctly, but the device (DNS server) is not responding."

as per posting rules:

1: wireless connection
2:ISP is Xfinity (Comcast)
3:Cable connection
4:Wireless Gateway (Modem/Router) Model: Arris TC862
5:Avast antivirus
6:
Windows IP Configuration

Host Name . . . . . . . . . . . . : Gary-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : hsd1.mi.comcast.net.

Wireless LAN adapter Wireless Network Connection 4:

Connection-specific DNS Suffix . : hsd1.mi.comcast.net.
Description . . . . . . . . . . . : Belkin Wireless Adapter
Physical Address. . . . . . . . . : B4-75-0E-1E-86-B5
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2601:4:680:1365:492c:ffd9:a05e:48b(Prefer
red)
Temporary IPv6 Address. . . . . . : 2601:4:680:1365:4887:abce:c437:a876(Prefe
rred)
Link-local IPv6 Address . . . . . : fe80::492c:ffd9:a05e:48b%21(Preferred)
IPv4 Address. . . . . . . . . . . : 10.0.0.4(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Wednesday, August 20, 2014 1:10:18 AM
Lease Expires . . . . . . . . . . : Wednesday, August 27, 2014 1:10:18 AM
Default Gateway . . . . . . . . . : fe80::21d:d2ff:fec3:4da1%21
10.0.0.1
DHCP Server . . . . . . . . . . . : 10.0.0.1
DHCPv6 IAID . . . . . . . . . . . : 414479630
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1B-41-67-D4-00-18-F3-D2-61-C5

DNS Servers . . . . . . . . . . . : 2001:558:feed::2
2001:558:feed::1
68.87.77.130
68.87.77.134
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.hsd1.mi.comcast.net.:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : hsd1.mi.comcast.net.
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 13:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:6ab8:20ee:654:f5ff:fffb(Prefe
rred)
Link-local IPv6 Address . . . . . : fe80::20ee:654:f5ff:fffb%22(Preferred)
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled






I have had the wireless gateway replaced twice in the last week, this has been an on going problem since I set up my computer. I have been to every site I can find to try and fix the problem. tried resetting the gateway, ipconfig commands /release and /renew as well as /flushdns and registerdns. All spyware/adware/antivirus comes back clean. Tried internet settings to acquire ip and dns automatically as well as defining specific addresses.

I am completely stumped. Any help would be fantastic.

Thank you for your time.

Hi there just checking in again.

After all of the great responses I got to my issue, the problem is finally resolved!

It appears that the problem was two things. The construction of the house, and the other wireless networks in my area.

So, if you are having a problem that is similar to mine and have tried everything you can think of to solve it, I have some advice.

1: get a program that can find information about all of the wifi networks in your area, (I used Xirrus WiFi Inspector) and check the channels the other networks in the area are broadcasting on. If everyone is on the same channel as you, change the channel.

2:If the place you live has a lot of metal, (My house has cast iron radiators in every room.) you may want to consider using a signal booster.


Thank you and goodnight.