Win 7 DNS issues

[oldman420]

System
cpu amd a8-5600k apu
ASUS F2A85-M2 FM2 AMD A85X (Hudson D4) SATA 6Gb/s USB 3.0 Micro ATX AMD Motherboard
HyperX Fury Red Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866 Desktop Memory Model HX318C10FRK2/8
Kingston SSDNow V300 Series SV300S37A/120G 2.5" 120GB SATA III Internal Solid State Drive
2 x Seagate Barracuda ST1000DM003 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
700 watt psu
Radeon r7 260 gpu

I just finished my newest build, very fast and functional machine.
I also purchased Win 7 home premium x64 to run it.
When I got it all set up I Noticed that the network tray indicator had a yellow flag in it indicating no internet access. I double checked my network connections and all was well I hook into the Comcast router directly with a hard line.
I proceeded to do network diagnostics and found that I had no DNS server available windows could see the network and other computers but there was no DNS.
I double checked that I was set to use automatic detection of ip v4 and v6 in my adapter properties.
I am stumped.
so I installed windows 8.1 enterprise trial and boom I am online no problem.
what the fudge could cause this issue?
my windows phone and all of the other boxes on the network can connect just fine but they are all win 8 or later.
I googled this issue and was told to use alternate DNS servers and tried that as well but with no success.
I know its not a hardware issue and I am stunned that win 7 is doing this.

BTW I did install all drivers from the manufacturer CD before attempting to get online.
any help would be appreciated.

 

[serpretetsky]

I googled this issue and was told to use alternate DNS servers and tried that as well but with no success.

So you manually put in a DNS server and it still didn't work?

What if you try to go to a website using only the ip address.
For example, to get to www.anandtech.com try typing "http://192.65.241.100/" into the address bar without quotes. Does it go there?

 

[stinger608]

I would jump over here to Asus:

http://www.asus.com/Motherboards/F2A85M2/HelpDesk_Download/

Download the chipset driver and LAN driver. Install both newest versions and give that a try.

With it working on win 8.1 and not on win 7 I have to think it is a driver issue.

 

[oldman420]

Thanks for the help, I will try the only IP address idea and see if that does it.
I confirmed that I am running the latest drivers for my NIC and chipset.
this one really has me baffled for sure

 

[master_shake_]

try googles dns numbers 8.8.8.8 and 8.8.4.4

also try resetting your modem it's worth a shot.