Network cable light on when reboot first starts,

March 6, 2013 at 21:40:40
Specs: Windows XP Home w/SP3, x86 Family 15 Model 104 Stepping AuthenticAMD ~1895 MHz
I'm having an issue that seems to be quite common among WinXP users, but in 2013 is NEW to me!

When my Toshiba Satellite notebook first begins booting up, the ethernet cable "connected indicator" light is ON, but somewhere around the halfway booted-up point, the light goes out. Once booting is completed, I get the message "Network cable is unplugged". The cable is definitely plugged in, as I also have Ubuntu Linux running on this same machine (dual-boot), and use this cabled-connection ALL THE TIME (for both LAN and Internet access)!

I have seen MANY references to issues about WinXP reporting "cable unplugged" errors, but not one suggestion which points me towards a solution!

Any NEW ideas out there on this issue? Any additional info. you require from me regarding my config. can be easily posted! Thanks in advance!

See More: Network cable light on when reboot first starts,

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March 7, 2013 at 00:02:29
It is normal for the network light to be on when the system boots, then go off when XP loads and come back on again when the Windows device driver initializes the interface.

Check in the device manager that a driver is loaded for the interface and that there isn't a yellow exclamation mark by it. In any case you might want to install the latest driver for your network interface.

It might help to know the model number of your laptop. Presumably it came with XP pre-installed, which means it must be fairly old.

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March 7, 2013 at 04:33:41
Thanks for response, ijack...

First off, let me say that the version of XP running on this notebook right now was NOT installed when I purchased it! I wiped the HD and re-installed from my own master XP Home copy. This same copy has been running well ever since! With, BTW, the Ethernet connector functioning correctly as well (prior to now, that is!).

Yes, the light does normally go off at some point during boot, but then COMES BACK ON once boot is completed! What's happening in this case is quite odd indeed; the light goes OFF and stays that way throughout the remainder of the boot-up process. It NEVER comes back on again! And, I know to check the driver settings in the Control Panel - System - Device Manager - all network devices appear OK, with no exclamation marks or other conflicts!

This is what is so confusing! I have been using this connection with THE SAME copy of XP for years, and it WAS WORKING; also, it STILL works when I boot into Ubuntu Linux (without removal / re-insertion of the Ethernet cable required, either; thus, the cable is INDEED CONNECTED!).

But, now XP says that, after it boots up, my cable is UNPLUGGED!!! What the heck?

I have seen so many mentions of issues like this on the 'Net that it makes my head spin, but no answers / suggestions they provided have fixed this problem!

One piece of info. I have left out (not intentionally, just due to lack of space, and not wishing to over-complicate the initial problem's description...) - I have recently re-designed my network topology to use a Windows 7 system for ICS (Internet Connection Sharing). All of my pc's (including those with Linux) are now sharing that connection quite happily (except for this one, the ONLY one running XP...).

All 5 of my pc's on my LAN are connected through an 8-port switch (of SMC manufacture...) to this single ICS connection, and 4 pc's connect to it and use it without issue...; only this XP notebook is having any problems at all!

I have individually DISCONNECTED, and then re-connected each of these other pc's on the LAN as well, to see if this clears up the problem, to no avail.

I have also turned the 8-port switch off, and then back on again as well, also with no luck!

Does that info. help at all? I am really frustrated by this point!

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March 7, 2013 at 05:13:28
Oh, yea, BTW...

I have also swapped out the 8-port switch, replacing it with a DHCP-disabled broadband router, to determine whether the switch itself was the problem; no luck there, either (same symptom).

One interesting thing - If I connect the Ethernet cable from the notebook DIRECTLY to the ICS-enabled Ethernet port on the Win7 pc, the connection works fine!!! A valid IP address is provided, internet is accessible, the whole nine yards! This is what kills me! The cable, port, everything is functional in SOME configuration(s), but NOT the one I need!

Sorry, didn't mean to leave those items out, either (but I also didn't want suggestions I have already tried!).

Quite a puzzle, eh?

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Related Solutions

March 7, 2013 at 05:19:24
Are you sure there isn't an IP conflict on your network? What happens if yout set an IP address on the XP machine manually? Does ipconfig see the interface?

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March 7, 2013 at 07:30:04
Considering all the information you've put into your posts I would say the issue is local to the PC and has nothing to do with any network appliances or other clients.

Personally, I would use a broadband router rather than ICS. Using ICS means having to leave that PC on all the time and if it ever dies, your internet goes down for everybody. A SOHO Router is just simpler.

Having said that...

Did you update the Windows driver for the NIC yet? If not, try that first. If you already have the most recent driver you next want to try resetting the TCP/IP stack. To reset your TCP/IP stack first open a command prompt window (ie: Start >> Run >> type cmd and hit Enter) and perform the following command:

netsh int ip reset c:\resetlog.txt

Note If you do not want to specify a directory path for the log file, use the following command:

netsh int ip reset resetlog.txt

Then reboot the computer.

If that doesn't do the trick, you will want to uninstall the device in Device Manager, reboot and let windows "find" the device and install it. Again, ensure you have the most recent drivers and test.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***

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March 8, 2013 at 14:36:45
How about trying this.....
First download , or just make sure you have the driver for the device, then go into Device manager & uninstall the device totally , then reboot and let windows re-install the hardware with its default settings.

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March 8, 2013 at 20:59:21

It's nice that you want to help but your a little late with your's been covered by myself and ijack already.

Next time, read the original question and all the responses before you decide to answer. It will save you some time, effort and typing.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***

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March 8, 2013 at 22:49:55
If you have Norton installed it may have installed a network filter driver that could be broken. Removed Norton if you have it.

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