Cannot communicate with DNS server (172.20.1.10)

assistance

New Member
Hi, all
I'm currently in a library. When I found that the internet continuely speeding up and down, I diagnosed the server and it said "Cannot communicate with DNS server (172.20.1.10)"
I've spent an hour browsing the internet and tried many ways to fix the problem, but still doesn't work.

and I'm using Vista

Here is some details

Microsoft Windows [Version 6.0.6001]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.

C:\Windows\system32>ipconfig/all
Windows IP Configuration
Host Name . . . . . . . . . . . . : onon-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : plsinfo.org

Wireless LAN adapter Wireless Network Connection:
Connection-specific DNS Suffix . : plsinfo.org
Description . . . . . . . . . . . : Dell Wireless 1397 WLAN Mini-Card
Physical Address. . . . . . . . . : 00-22-5F-CF-B0-88
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::a9eb:c315:e7c:d0ae%12(Preferred)
IPv4 Address. . . . . . . . . . . : 172.19.54.23(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.252.0
Lease Obtained. . . . . . . . . . : Tuesday, August 17, 2010 1:12:52 PM
Lease Expires . . . . . . . . . . : Tuesday, August 17, 2010 2:12:52 PM
Default Gateway . . . . . . . . . : 172.19.52.1
DHCP Server . . . . . . . . . . . : 172.19.52.1
DNS Servers . . . . . . . . . . . : 172.20.1.10
172.20.1.4
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Marvell Yukon 88E8040 PCI-E Fast Ethernet
Controller
Physical Address. . . . . . . . . : 00-25-64-46-2E-60
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 6:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{11F6A433-73B3-4CF6-9C5F-0AD711BB9
D1F}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 7:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 11:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 6TO4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 12:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.domain_not_set.invalid
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 13:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Thanks in advance
 

My Computer

System One

  • Manufacturer/Model
    Dell inspiron 1545
    CPU
    Pentium(R) Dual-Core CPU T4200@ 2.00Ghz 2.00Ghz
    Memory
    3.00 GB
Do you work for the library? If not, youre tampering with someones network.... Which isn't really legal.
 

My Computer

System One

  • CPU
    Dual L5639 // i7 950 @ 4.0Ghz
    Motherboard
    Evga SR-2 // Gigabyte x58a-ud3r
    Memory
    12Gig Corsair XMS3 // 6Gig OCZ Gold
    Graphics Card(s)
    gtx 560 ti // gtx 260-216
    Monitor(s) Displays
    Dual 22" // Headless
    Hard Drives
    OCZ aGILITY 3, 120Gig + Seagate 500Gig x 2
    PSU
    Silverstone da700 // Corsair 520hx
    Case
    Rosewill BlackHawk Ultra // Antec 900v1
    Cooling
    Twin CM Hyper 212+ // Noctua NH-u12
    Other Info
    Acer 8930 laptop with x9100...

My Computer

System One

  • Manufacturer/Model
    Lenovo Thinkpad T400
    CPU
    Intel Mobile Core 2 Duo P8700 @ 2.53GHz
    Motherboard
    LENOVO 64734VM
    Memory
    2.00GB Single-Channel DDR3 @ 531MHz
    Graphics Card(s)
    Intel Mobile Intel 4 Series Express Chipset Family
    Sound Card
    Conexant 20561 SmartAudio HD
    Monitor(s) Displays
    15 inch
    Screen Resolution
    1280 x 800
    Hard Drives
    1x 180GB Intel 530 series SSD
    1 x 120GB Hitachi 5400rmp
    1 x 650GB Western Digital Elements 5400rpm
    1x 1Tb Western Digital Elements 5400rpm
    Internet Speed
    Medium for New Zealand
    Other Info
    Weakest part of my computer is the graphics chipset.
    Only ever used a laptop.
    Also use USB Freeview TV Card
    Lenovo Docking Station
    External Speakers
    Other bits a pieces as needed
Do you work for the library? If not, youre tampering with someones network.... Which isn't really legal.

Oh, no, I'm not. I accessed one of the 3 library servers. :S
Do you mean it is illegal to use the library's wireless network???
 

My Computer

System One

  • Manufacturer/Model
    Dell inspiron 1545
    CPU
    Pentium(R) Dual-Core CPU T4200@ 2.00Ghz 2.00Ghz
    Memory
    3.00 GB
Oh, no, I'm not. I accessed one of the 3 library servers. :S
Do you mean it is illegal to use the library's wireless network???

It is if you do not have their permision, or it doesn't says you can on signs.

Are you thinking somethings wrong on your laptop?

You may very well be just fine, but the server side is bogged down. the wireless signal is low/crap, or theres security setup thats doing it to you.

See what the new drivers do, it could very well be the drivers.
 

My Computer

System One

  • CPU
    Dual L5639 // i7 950 @ 4.0Ghz
    Motherboard
    Evga SR-2 // Gigabyte x58a-ud3r
    Memory
    12Gig Corsair XMS3 // 6Gig OCZ Gold
    Graphics Card(s)
    gtx 560 ti // gtx 260-216
    Monitor(s) Displays
    Dual 22" // Headless
    Hard Drives
    OCZ aGILITY 3, 120Gig + Seagate 500Gig x 2
    PSU
    Silverstone da700 // Corsair 520hx
    Case
    Rosewill BlackHawk Ultra // Antec 900v1
    Cooling
    Twin CM Hyper 212+ // Noctua NH-u12
    Other Info
    Acer 8930 laptop with x9100...
In New Zealand you normally pay a small fee and get their password to use their network.
 

My Computer

System One

  • Manufacturer/Model
    Lenovo Thinkpad T400
    CPU
    Intel Mobile Core 2 Duo P8700 @ 2.53GHz
    Motherboard
    LENOVO 64734VM
    Memory
    2.00GB Single-Channel DDR3 @ 531MHz
    Graphics Card(s)
    Intel Mobile Intel 4 Series Express Chipset Family
    Sound Card
    Conexant 20561 SmartAudio HD
    Monitor(s) Displays
    15 inch
    Screen Resolution
    1280 x 800
    Hard Drives
    1x 180GB Intel 530 series SSD
    1 x 120GB Hitachi 5400rmp
    1 x 650GB Western Digital Elements 5400rpm
    1x 1Tb Western Digital Elements 5400rpm
    Internet Speed
    Medium for New Zealand
    Other Info
    Weakest part of my computer is the graphics chipset.
    Only ever used a laptop.
    Also use USB Freeview TV Card
    Lenovo Docking Station
    External Speakers
    Other bits a pieces as needed
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