No internet access

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Guest

Hello,

I am having problems accessing the internet from my Windows 2000 (SP4)
laptop computer. In the device manager, I have the following adapter:

Realtek RTL8139/810x Fast Ethernet NIC

From the DOS command prompt, typing ipconfig /all results in:

ipconfig /all
Windows IP Configuration
Host name ...................... PAOLO-B39375d00
Primary DNS SUffix .........
Node Type ...................... Broadcast
IP Routing Enabled ........... No
WINS Proxy Enabled ......... No

I tried running a WinSockFix.exe utility to fix my WinSock and tried to
reinstall the TCP/IP protocol to no avail. I have also been getting the
following error message:

Error: No adapter bound to TCP/IP enabled for DHCP.

1) How can I resolve these issues and access the internet again ?

Paolo
 
ptreves said:
Hello,

I am having problems accessing the internet from my Windows 2000 (SP4)
laptop computer. In the device manager, I have the following adapter:
Click to expand...

What problems specifically?

Can you ping? By number? And by Name?

If ping fails by IP, how fare can you tracert ?

If ping fails, and you can ping locally, can you
use any other programs?

Try:

telnet www.yahoo.com 80

If you get a 'frozen' blank screen that is GOOD,
hit enter twice and see if the screen flashes some
HTTP.

Realtek RTL8139/810x Fast Ethernet NIC

From the DOS command prompt, typing ipconfig /all results in:

ipconfig /all
Windows IP Configuration
Host name ...................... PAOLO-B39375d00
Primary DNS SUffix .........
Node Type ...................... Broadcast
IP Routing Enabled ........... No
WINS Proxy Enabled ......... No
Click to expand...

This is the relative unimportant part of IPConfig /all

You need to provide the entire listing.
I tried running a WinSockFix.exe utility to fix my WinSock and tried to
reinstall the TCP/IP protocol to no avail. I have also been getting the
following error message:
Click to expand...

Why? WinSock is almost never the problem.
Error: No adapter bound to TCP/IP enabled for DHCP.
Click to expand...

That sounds like you are using a manually assigned IP address
(not DHCP assigned.)
1) How can I resolve these issues and access the internet again ?
Click to expand...

Give specifics. Troubleshooting is mostly about being
VERY specific, and isolating/simplifying until you discover
the actual problem.

Most problems are easy to fix -- the trick is isolating them to
the cause.
 
Hello Martin,

Typing the command: ipconfig results in no output and typing ipconfig /all
results in the output I have shown to you before. For some reason I get the
impression that the TCP/IP protocol is not even installed or was currupted on
my Realtek NIC adapter.

I tried the following command:

netsh
netsh>int ip reset log.txt
netsh>exit

but there is no reset command for Windows 2000. I did not set any Static IP
values for my Realtek adapter.

1) Any suggestions ?

Paolo
 
ptreves said:
Hello Martin,

Typing the command: ipconfig results in no output and typing ipconfig /all
results in the output I have shown to you before. For some reason I get the
impression that the TCP/IP protocol is not even installed or was currupted on
my Realtek NIC adapter.
Click to expand...

If there is no more for you NIC (each NIC) then your hardware
or drivers are likely the cause.

It is possible that IP is the direct cause since what you really
have is a failure of IP to bind (attach to) any NICs, but the
underlying cause is more likely the hardware.

I tried the following command:

netsh
netsh>int ip reset log.txt
netsh>exit

but there is no reset command for Windows 2000. I did not set any Static IP
values for my Realtek adapter.

1) Any suggestions ?
Click to expand...

Start with Device Manager and get the card to show up. Re-install
the drivers for the card if necessary.

Do a repair install of the entire Operating System if you think IP
is the problem (probably not though). Repair install: Original
CD-ROM, choose install to same directory and MAKE SURE
that it offers to REPAIR and that you choose that option.

Also note, some NICs will NOT initialize unless a live
network cable is plugged into them (usually called "link detect".)

IP cannot bind to the card unless it is working, and the driver
initializes it.
 
Hello Martin,

Here are a few commands and there corresponding outputs:

1) telnet www.yahoo.com 80
Connectin to www.yahoo.com....Could not open a connection to host on port
80....Connect Failed

2) ipconfig
Windows 2000 IP Configuration

3) tracert -h 100
Tracing route to 0.0.0.100 over a maximum of 100 hops
1 destination host unreacheable
Trace complete
---
Under the Device Manager, for my Network Adapters I have the following:

Realtek RTL8139/810x Family Fast Ethenet NIC

With a device status saying that 'This device is working properly'. Under
the Control Panel under the "Internet Protocol TCP/IP" for the Realtek
adapter, when I press the Properties button, I get the following message:

In order to configure TCP/IP, you must install and enable a network adapter
card.

1) I don't understand this message, my Realtek adapter is enabled. Why am I
getting this message ?

Paolo
 
ptreves said:
Hello Martin,

Here are a few commands and there corresponding outputs:

1) telnet www.yahoo.com 80
Connectin to www.yahoo.com....Could not open a connection to host on port
80....Connect Failed
Click to expand...

Presuming the above also fails with the IP address
then you have proven that either routing in general
is failing (check with tracert if ICMP is allowed)
OR that you are explicitly blocking outbound requests
for destination port 80 or the expected responses.
2) ipconfig
Windows 2000 IP Configuration
Click to expand...

Is that all?

IPConfig should give at least your IP address.

IPConfig /all should give a page (or more) of stuff.

If you are seeing those - -check your hardware and
drivers in Device Manager to get the NIC working.
3) tracert -h 100
Tracing route to 0.0.0.100 over a maximum of 100 hops
1 destination host unreacheable
Trace complete
Click to expand...

First, you almost never need any tracert options or switches
other than the DESTINCTION, so just try:

tracert www.yahoo.com

Or perhaps better (to eliminate name resolution issues):

tracert 68.142.197.76

---
Under the Device Manager, for my Network Adapters I have the following:

Realtek RTL8139/810x Family Fast Ethenet NIC

With a device status saying that 'This device is working properly'. Under
the Control Panel under the "Internet Protocol TCP/IP" for the Realtek
adapter, when I press the Properties button, I get the following message:

In order to configure TCP/IP, you must install and enable a network adapter
card.

1) I don't understand this message, my Realtek adapter is enabled. Why am I
getting this message ?
Click to expand...

My first guess would be "Link Detect" (as I indicated previously).

Check the NIC, "Network and Dialup connections"->properties->
Configure (button) and check for "connector type" or something
similar that offers link detect, 100 Mbps etc.

Chose the proper network speed/connector and try to avoid a
"link detect" setting.

OR make sure this NIC is plugged into a working hub.

You might have to swap out the NIC if this doesn't help

Broken NICs are uncommon (today) but they do happen.
 
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