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Old 27th December 2007   #1
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Unable to contact your DHCP server. Request has timed out.


I've been having a very hard time trying to fix this wireless connection on one of my family computers. I have 3 computers set up at home. All three are connected to a SMC Barricade 7004VWBR router.

One day the wireless connection just stopped working on this computer. I tried a bunch of different stuff I had found on this board to try to fix it and none of it worked plus I ended up corrupting some system files. I formatted my computer and reinstalled Windows XP and expected the connection to work again. This was not the case. I could connect to the internet via a cable but not through the wireless adapter.

Currently, I am running Windows XP Professional 2002 Version SP1. I don't think any firewalls are up on the computer. I have installed the drivers for my wireless adapter.

The wireless adapter I am using on this computer is a TrendNet TEW-424UB v3. I tried my D-Link adapter from another computer but I got the same Cannot connect to DHCP server message when I run/cmd ipconfig/release - ipconfig/renew.

Here is what I have tried so far:
In internet protocol properties (TCP/IP) properties I've ensured that obtain IP address automatically and obtain DNS server address automatically are selected.

I ran netsh int ip reset and received this log:

deleted SYSTEM\CurrentControlSet\Services\Netbt\Parameters\EnableLmhosts
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{A623BEB1-9DBD-4D0A-959B-1394A6F98C9D}\IpAutoconfigurationAddress
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{A623BEB1-9DBD-4D0A-959B-1394A6F98C9D}\IpAutoconfigurationMask
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{A623BEB1-9DBD-4D0A-959B-1394A6F98C9D}\IpAutoconfigurationSeed
reset SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{E4B285EB-68A4-4330-A259-8CE84E1A1EF4}\AddressType
old REG_DWORD = 1

added SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{E4B285EB-68A4-4330-A259-8CE84E1A1EF4}\DisableDynamicUpdate
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{E4B285EB-68A4-4330-A259-8CE84E1A1EF4}\IpAutoconfigurationAddress
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{E4B285EB-68A4-4330-A259-8CE84E1A1EF4}\IpAutoconfigurationMask
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{E4B285EB-68A4-4330-A259-8CE84E1A1EF4}\IpAutoconfigurationSeed
reset SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{E4B285EB-68A4-4330-A259-8CE84E1A1EF4}\RawIpAllowedProtocols
old REG_MULTI_SZ =
0

reset SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{E4B285EB-68A4-4330-A259-8CE84E1A1EF4}\TcpAllowedPorts
old REG_MULTI_SZ =
0

reset SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{E4B285EB-68A4-4330-A259-8CE84E1A1EF4}\UdpAllowedPorts
old REG_MULTI_SZ =
0

deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DontAddDefaultGatewayDef ault
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\EnableIcmpRedirect
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\EnableSecurityFilters
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\SearchList
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\UseDomainNameDevolution
reset Linkage\UpperBind for USB\VID_0BDA&PID_8189\0014D1365B63. bad value was:
REG_MULTI_SZ =
PSched

reset Linkage\UpperBind for ROOT\MS_NDISWANIP\0000. bad value was:
REG_MULTI_SZ =
PSched

reset Linkage\UpperBind for PCI\VEN_1039&DEV_0900&SUBSYS_807C1043&REV_90\3&61AAA01&0&18. bad value was:
REG_MULTI_SZ =
PSched

<completed>

I ran netsh int ip reset a second time and the log was empty.

I've read on this board that I should ping and see the results (I don't really know what the results mean):

ping 127.0.0.1

Pinging 127.0.0.1 with 32 bytes of data:

Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128

Ping statistics for 127.0.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

I know my network password is correct because I have been able to connect with my other wireless computer. I really don't know what to do now. Does anyone have any suggestions?

Here is ipconfig/all on the broken computer:

ipconfig/all

Windows IP Configuration

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

Ethernet adapter Wireless Network Connection 5:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : TRENDnet TEW-424UB Wireless 802.11g
54Mbps USB 2.0 Network Adapter
Physical Address. . . . . . . . . : 00-14-D1-36-5B-63
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Autoconfiguration IP Address. . . : 169.254.158.226
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :

Here is ipconfig/all on my working wireless computer:

ipconfig/all

Windows IP Configuration

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

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : SiS 900-Based PCI Fast Ethernet Adap
ter
Physical Address. . . . . . . . . : 00-E0-18-77-DC-05

Ethernet adapter Wireless Network Connection 2:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : D-Link WUA-1340 USB Adapter
Physical Address. . . . . . . . . : 00-17-9A-AE-D3-08
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.2.170
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DNS Servers . . . . . . . . . . . : 192.168.2.1
Lease Obtained. . . . . . . . . . : Thursday, December 27, 2007 2:12:26 PM
Lease Expires . . . . . . . . . . : Thursday, January 03, 2008 2:12:26 PM


Any help is appreciated. Thanks!

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Old 28th December 2007   #2
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My System
Install XP Service Pack 2.
It includes fixes for XP wifi and a better Wireless Zero Config service.
Don't get it at Windows Update, get it here:
http://www.microsoft.com/downloads/d...displaylang=en
Then post results.

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Old 28th December 2007   #3
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Originally Posted by TonyT View Post
Install XP Service Pack 2.
It includes fixes for XP wifi and a better Wireless Zero Config service.
Don't get it at Windows Update, get it here:
http://www.microsoft.com/downloads/d...displaylang=en
Then post results.
I installed SP2 from the link you sent me (thx btw I was trying to figure out where to find SP2). I tried connecting with the Windows Firewall on and off and both times I get the same message:

Limited or no connectivity
Unable to contact your DHCP server. Request timed out.

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Old 28th December 2007   #4
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double post sry


Last edited by slink; 29th December 2007 at 15:41.
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Old 29th December 2007   #5
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My System
Quote:
I know my network password is correct because I have been able to connect with my other wireless computer. I really don't know what to do now. Does anyone have any suggestions?
Set the AP to use NO securty.
Config the troublesome wifi connection as such:

rt click My Network Places > select Properties
rt click Wireless icon > select Properties
select TCP/IP Internet Protocol > click Properties button
checked Obtain an IP address automatically radio button
checked Obtain DNS server address automatically
exit all

Control Panel > Admin Tools > Services
set the following to Automatic and Started:
DHCP Client
Network Connections
Network Location Awareness (NLA)
Wireless Zero Configuration
exit

Do NOT use 3rd party wifi connection software such as the type the often accompanies a wifi card, use Windows to handle wifi connections. If have 3rd party software then do:
rt click My Network Places > select Properties
rt click Wireless icon > select Properties > Wireless Network Tab
checked Use Windows to configure my wireless network settings
Remove all Preferred networks in list if exists
exit

If can then connect using NO security, try setting the AP to use WEP security. If joy on troublesome adapter, repeat above and remove your wlan from the preferred networks list. Then use another comp to set the AP to use WPA security. Try again.

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Old 29th December 2007   #6
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I tried all that and both wireless connections did work when the security is disabled. When I re-enabled my 64-bit WEP security neither wireless computer would work (even the one that was fine). So right now I have the security disabled.

Do you have any idea what this means? Is it my router that is causing the problems?

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Old 29th December 2007   #7
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My System
Config AP like so:
WEP 64.
No shared pass phrase.
Open network.
Enable ssid broadcast.

Remember, you need to make changes to the AP from a wired computer only.

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