[SOLVED] One PC can connect to Net, but other can't

[multiplex77]

Hi,

I am not able to connect to the Net with my laptop all of a sudden. I usually connect via wireless. The other two laptops in my home have no problems connecting.

I have tried:
- Surfing the web using my browsers (IE, FF)
- connecting to my email using my email clients (Thunderbird, Outlook)
- accessing my FTP site via WS-FTP.
- enabling and disabling the wireless connection on my laptop.
- connecting to my router using a LAN cable
- rebooting (many times)
- uninstalling the last software I installed (even tho the connection was fine for a week after I installed it).
- running AdAware to flush out any malware

All don't work.

BUT, if I:
- ping my router 192.168.1.1
- ping google.com

Both give a response!

My router is D-Link DSL-G604T, OS is Windows XP Pro and laptop is Dell Inspiron 6400.

Can anyone suggest what could be the problem? I've never faced this kind of problem in the 2 years I've been using my laptop. Thanks.

[johnwill]

TCP/IP stack repair options for use with Windows XP with SP2/SP3.

Start, Run, CMD to open a command prompt:

In the command prompt window that opens, type type the following commands:

Note: Type only the text in bold for the following commands.

Reset TCP/IP stack to installation defaults, type: netsh int ip reset reset.log

Reset WINSOCK entries to installation defaults, type: netsh winsock reset catalog

Reboot the machine.


Let's see this after the reboot.

Hold the Windows key and press R, then type CMD to open a command prompt:

In the command prompt window that opens, type type the following command:

Note that there is a space before the /ALL, but there is NOT a space after the / in the following command.

IPCONFIG /ALL

Right click in the command window and choose Select All, then hit Enter.
Paste the results in a message here.

If you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.

[multiplex77]

Hi Thanks for your reply. Here's my ipconfig /all result:

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\...>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : PAHAY
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Broadcom 440x 10/100 Integrated Controller
Physical Address. . . . . . . . . : 00-14-B5-13-A3-2E

Ethernet adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/Wireless 3945ABG Network Connection
Physical Address. . . . . . . . . : 00-13-02-AC-70-78
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.1
Lease Obtained. . . . . . . . . . : Wednesday, 16 July 2008 8:05:50 AM
Lease Expires . . . . . . . . . . : Wednesday, 16 July 2008 9:05:50 AM

[multiplex77]

Can anyone help me with this please? I'm still unable to access the Net after more than a week. :(

[lazareth1]

Did you try the 'netsh int ip reset reset.log' and 'netsh winsock reset catalog'
command suggest by john?

[johnwill]

Try these simple tests.

Hold the Windows key and press R, then type CMD (COMMAND for W98/WME) to open a command prompt:

In the command prompt window that opens, type type the following commands one at a time, followed by the Enter key:

IPCONFIG

PING <computer_IP_address>

PING <default_gateway_address>

PING 206.190.60.37

PING yahoo.com

Right click in the command window and choose Select All, then hit Enter.
Paste the results in a message here.

<computer_IP_address> - The IP Address of your computer, obtained from the IPCONFIG command above.

<default_gateway_address> - The IP address of the Default Gateway, obtained from the IPCONFIG command above.

If you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.

[multiplex77]

Lazarus - Yes I followed John's instructions to the letter.

John, here's my result. As mentioned earlier, I have no trouble pinging. It is when I try to access the Net using my email client or browser (or any other software like my FTP client) that it fails. Thanks for your help.

----------------


C:\Documents and Settings\multiplex77>ipconfig

Windows IP Configuration

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected

Ethernet adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
IP Address. . . . . . . . . . . . : 192.168.1.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1

C:\Documents and Settings\multiplex77>ping 192.168.1.2

Pinging 192.168.1.2 with 32 bytes of data:

Reply from 192.168.1.2: bytes=32 time<1ms TTL=128
Reply from 192.168.1.2: bytes=32 time<1ms TTL=128
Reply from 192.168.1.2: bytes=32 time<1ms TTL=128
Reply from 192.168.1.2: bytes=32 time<1ms TTL=128

Ping statistics for 192.168.1.2:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\Documents and Settings\multiplex77>ping 192.168.1.1

Pinging 192.168.1.1 with 32 bytes of data:

Reply from 192.168.1.1: bytes=32 time=8ms TTL=255
Reply from 192.168.1.1: bytes=32 time=258ms TTL=255
Reply from 192.168.1.1: bytes=32 time=9ms TTL=255
Reply from 192.168.1.1: bytes=32 time=20ms TTL=255

Ping statistics for 192.168.1.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 8ms, Maximum = 258ms, Average = 73ms

C:\Documents and Settings\multiplex77>ping 206.190.60.37

Pinging 206.190.60.37 with 32 bytes of data:

Reply from 206.190.60.37: bytes=32 time=938ms TTL=48
Reply from 206.190.60.37: bytes=32 time=349ms TTL=48
Reply from 206.190.60.37: bytes=32 time=582ms TTL=48
Reply from 206.190.60.37: bytes=32 time=398ms TTL=48

Ping statistics for 206.190.60.37:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 349ms, Maximum = 938ms, Average = 566ms

C:\Documents and Settings\multiplex77>ping yahoo.com

Pinging yahoo.com [206.190.60.37] with 32 bytes of data:

Reply from 206.190.60.37: bytes=32 time=840ms TTL=48
Reply from 206.190.60.37: bytes=32 time=651ms TTL=48
Reply from 206.190.60.37: bytes=32 time=471ms TTL=48
Reply from 206.190.60.37: bytes=32 time=950ms TTL=48

Ping statistics for 206.190.60.37:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 471ms, Maximum = 950ms, Average = 728ms

C:\Documents and Settings\multiplex77>

[lazareth1]

Check your firewalls. Switch off windows firewall and if you have any other security software with firewalls then uninstall the to make sure they are not interfering.

[johnwill]

Yep, that machine is connected to the Internet, so we'll need the exact symptoms of what doesn't work now.

[multiplex77]

Lazareth - you were right. It was my Zone Alarm that was causing it. I didn't suspect it because I've had it installed for over 2 years without it ever being the cause of my Net downtime.

Thanks to both you and John for your help.

[lazareth1]

Np. Come back anytime!