ASUS P4C800 NIC troubles...

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Rez

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Aug 18, 2004
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I'm experiencing a problem which is irritating more than anything with my computer and using it on my home network.

The computer is able to connect to the home network and run absolutely fine, however, periodically it will suddenly stop sending and receiving packets and communicating with the other computers and internet which results in me having to disable the network connection and re-enable it. Windows pops up the little balloon message on the system tray proclaiming "A network cable has been disconnected" and then almost immediately afterwards - "Local Area Connection now connected at 100.0 Mbit/sec". The majority of the time the computer does not function properly on the network after this occurs and I have to disable and re-enable the connection. I've searched many forums for a fix for the problem but haven't found one, so I'm hoping you people might be able to offer some help.

Specs are as follows:

P4 3.0 Ghz w/ HTT
ASUS P4C800 w/ 3Com Gigabit LOM (3C940) On-board LAN
Windows XP Home (Service Pack 1)

Netgear DG834 Broadband router

I've tried removing the network connection and reinstating it, using a different cat5 cable, swapped the port connecting on the router the computer is connected to over, re-installing the on-board LAN driver, set it so it can't be made inactive to save power, ensured I have the latest driver but I'm still experiencing the problem. I've also updated the firmware on the router to the newest version and tried rebooting it in case this has caused the problem.

I have several other systems running on my network through the same router and cable combinations but they do not experience the same problem at all.

Your help would be greatly appreciated and if you need anymore information then please ask away.

Thanks
 
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Aug 18, 2004
Messages
94
are you running any sort of network software on your computers (such as NetWare, MS Networking etc.) or are you just using the network for internet connection sharing using the router?
 

Rez

Thread Starter
Joined
Aug 18, 2004
Messages
38
All the computers just share the internet connection via the router. There's no obvious network software installed on any of them, especially not the one in question.
 
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Messages
94
does the motherboard have 2 LAN adapters or just one? I wonder if the Gigabit ethernet is too much for the router... BUT it shouldnt matter cuz they're autosensing 10/100/1000..

has it always been like this or has it recently started acting up?

I'm thinking there could be some software taking over the ethernet adapter, or interfering, or perhaps your router has become unstable, and yes I've had it happen too.. it was a netgear MR814 broadband router.. try resetting the router? (I mean FULL reset, firmware n all)
 

Rez

Thread Starter
Joined
Aug 18, 2004
Messages
38
It's just got the one LAN adaptor and a firewire next to it.

Well I'm pretty sure that when I first got the computer there was no problem and that it arose after I made up a new cat5 cable to connect it to the router. That's when it began happening but it's not the cable because I've since switched back to the original cable and the same problem occurs. I also tried disabling the firewire in case that made a difference.

I can't think of any software which could have caused the problem unless it's MSN? I barely have any programs installed that use the internet other than games but while playing games online it doesn't seem to ever disconnect.

I've rebooted the router a few times but not done a full reset - I would have thought other computers on the network would be acting up if it was a problem with the router considering there are 6 other networked PCs.
 
Joined
Aug 18, 2004
Messages
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what OS are the other PCs? They might not give error messages if they are disconnected, they would only be disconnected and reconnect themselves.., if you have access to another router, try substituting it.. (d-links are nice)
 

Rez

Thread Starter
Joined
Aug 18, 2004
Messages
38
Nah, 4 of them are on Windows XP (3 on Home, 1 on Pro) and the other two are on 98. I've had absolutely no networking problems with any of the other PCs that I haven't been able to resolve - not like this :(

Unfortunately, I don't have another router to try either but I'm pretty sure it's a problem with the onboard ethernet on this computer, I just don't know what to do about it...
 
Joined
Aug 29, 2004
Messages
2
ive got the P4C800 too...theres a setting in the 3Com's drivers that says "allow the port to fall asleep if not used" or something like that...thats your problem, it disconnects the port every so often...annoying...untick the box!!!

Blackout
 
Joined
Aug 28, 2004
Messages
22,816
I have the same board and blackout is right--Go to Device Manager, select 3Com GIgabit--right click select properties and go to the Power Management tab---make sure the Allow the computer to turn off this device to save power---is not checked.
 
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