Cannot communicate with Primary DNS Server

benpfiffner

New Member
I was recently out of town and took my laptop with me. Upon returning, our apartment had a new modem. I was able to connect wirelessly prior to leaving, and had no problem connecting wirelessly while traveling, but can not connect now that I'm back home. I suspect it's DNS related, but can't get it figured out. Tech support at the ISP is not helping at all.

I have a Compaq Presario C700, the modem is a Cisco DPC3825. All my settings are set to 'Automatic'. I've tried all of the diagnostics, resets, unplugging, etc to no avail.

Any help would be appreciated! I really don't think this is an issue with my PC like my ISP is telling me.

Windows IP Configuration

Wireless LAN adapter Wireless Network Connection:
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::d568:cc84:24e7:bfef%11
IPv4 Address. . . . . . . . . . . : 192.168.0.15
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::444:f8c5:41a7:149f%10
IPv4 Address. . . . . . . . . . . : 192.168.0.16
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
Tunnel adapter Local Area Connection* 6:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Tunnel adapter Local Area Connection* 7:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Tunnel adapter Local Area Connection* 11:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Tunnel adapter Local Area Connection* 17:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
 

My Computer

System One

  • Manufacturer/Model
    Compaq Presario C700
Welcome benpfiffner,

You need to tell me more. Is this a combo router/modem ? If so, you may need to access the router page and put your computer mac addy on the allowed list. Did this come with a password ? Post back so i may understand this better.
 

My Computer

System One

  • Manufacturer/Model
    Emachine ET 1161-05
    CPU
    AMD Athlon 64 LE-1640
    Motherboard
    eMachines MCP61PM-GM (Socket AM2 )
    Memory
    2.00 GB Dual-Channel DDR2 @ 387MHz (6-6-6-18)
    Graphics Card(s)
    Acer E181H (1280x768@60Hz) 128MB GeForce 6150SE nForce 430 (
    Sound Card
    Realtek High Definition Audio
    Monitor(s) Displays
    Name Acer E181H on NVIDIA GeForce 6150SE nForce 430
    Screen Resolution
    1280x768 pixels
    Hard Drives
    ST316081 5AS SCSI Disk Device
    PSU
    MCP61PM-GM 9000 NVIDIA Chipset Model MCP61 Chipset Revisio
    Case
    Tower
    Cooling
    Fan Speed 1247 RPM
    Keyboard
    Standard PS/2 Keyboard
    Mouse
    PS/2 Compatible Mouse
    Internet Speed
    http://www.speedtest.net/result/1538974261.png
Browse to command prompt (start menu, accessories), right click and select run as administrator.

In the black box type in ipconfig /release

When that has completed type in ipconfig /renew

Have you tried in safe mode with networking?

Also try to flush your DNS: Flush DNS - What's My DNS?
 
Last edited:

My Computers

System One System Two

  • Operating System
    Windows 8.1 Industry Pro x64
    Manufacturer/Model
    HP Pavillion Elite HPE-250f
    CPU
    Intel i7 860 Quad core 2.8 ghz
    Memory
    8 gb
    Graphics Card(s)
    ATI Radeon HD 5770 1 gb ram
    Monitor(s) Displays
    Alienware 25 AW2521HF
    Screen Resolution
    1920x1080 &1680x1050
    Hard Drives
    1 TB x2
    Other Info
    https://www.cnet.com/products/hp-pavilion-elite-hpe-250f/
  • Operating System
    Windows 2012 R2 Data center/Linux Mint
    Manufacturer/Model
    Dell Poweredge T140
    CPU
    i3 9100 3.6GHz, 8M cache, 4C/4T
    Memory
    8GB 2666MT/s DDR4 ECC UDIMM
    Screen Resolution
    1680x1050
    Hard Drives
    1 TB & 360 GB x2
    Other Info
    https://www.dell.com/en-us/work/shop/productdetailstxn/poweredge-t140?~ck=bt
Seeing as how this was the top Google result for the exact problem I was experiencing and I spent 4+ hours researching the issue which led to its resolution, I registered to post this fix:

The issue, for me, was my adapter's driver. I had an old driver. My Atheros wireless adapter would not recognize WPA2 security. There were two options: Log in to my router and change my security to WEP (and slowing my speed in the process) or update my drivers. After searching for quite some time, I found my drivers here (of course, your adapter might be a different one):

Quick tip: Atheros AR5007 wifi and Linksys routers - Roy Tanck's weblog

TL;DR: Update your drivers or use WEP security.

OP: Please mark your topic as SOLVED or RESOLVED or whatever this forum uses if this information was helpful.
 

My Computer

This thread is from 11 months ago, the OP is long gone by now.

Thanks for the helpful response though, I'm sure many will find good use for it.
 

My Computer

System One

  • Manufacturer/Model
    HP Pavilion G6
    Memory
    750GB HDD 6GB RAM
    Graphics Card(s)
    AMD A6-3400M APU with Radeon HD Graphics
    Internet Speed
    25mbps
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