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Old 15th April 2009   #1
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Join Date: Apr 2009
Posts: 1
Computer Experience:
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Bee Lo Reputation Level


Connection Randomly Stopped Working -- Unable to Contact DHCP Server

Hello all,

This is the first time I've ever had to post on a forum instead of gleaning the answers from other existing threads. Hopefully this thread will become one that others can glean answers from.

THE ISSUE: I have a router connecting two Windows XP computers. The one I am posting from has working internet, and until recently, so did my other one. For no discernable reason, one day the other computer just stopped having internet access. The ethernet cable is not the issue -- other computers connect fine from it. I believe something in Windows or in hardware has gotten messed up.

When I enter "ipconfig" it shows me a 169.x.x.x address -- a private network address. "ipconfig /release" just gives me the same address. "ipconfig /renew" hangs and eventually errors saying "Unable to contact your DHCP server." The DHCP Client and DNS Client services are running. I reset my TCP/IP with "netsh int ip reset c:\log.txt" and that did not help. In a thread where someone with a similar issue got help, one of those two things fixed their problem, but sadly not mine.

Other than my ipconfig /all log (posted below), I am not sure what information would be useful for you. Any help would be greatly appreciated.


FOR COMPARISON: My ipconfig /all log from this working computer:

Quote:
Windows IP Configuration

Host Name . . . . . . . . . . . . : Rotanibox1
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : eau.wi.charter.com

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : eau.wi.charter.com
Description . . . . . . . . . . . : Marvell Yukon 88E8001/8003/8010 PCI Gigabit Ethernet Controller
Physical Address. . . . . . . . . : 00-11-D8-0F-AA-D2
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.100
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 68.115.71.53
24.196.64.53
24.159.193.40
Lease Obtained. . . . . . . . . . : Tuesday, April 14, 2009 3:30:20 PM
Lease Expires . . . . . . . . . . : Wednesday, April 15, 2009 3:30:20 PM

And the log from the problem machine:


Quote:
Windows IP Configuration

Host Name . . . . . . . . . . . . : Rotanibox2
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VIA PCI 10/100Mb Fast Ethernet Adapter
Physical Address. . . . . . . . . : 00-07-95-07-8C-B6
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Autoconfiguration IP Address. . . : 169.254.62.90
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :

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Old 15th April 2009   #2
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Try setting box2 to a static ip address:

ip: 192.168.0.2
subnet: 255.255.255.0
gateway: 192.168.0.1
dns: 192.168.0.1 (let the router handle dns queries for you)

reboot

If no joy then you likely have a failed network adapter or malware on the comp.

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