problem setting up home LAN network

June 28, 2011 at 05:48:58
Specs: Windows XP
hi network gurus. i am having a nightmare trying to solve this problem with my home LAN network. i tried googling almost every forum i could on the internet but still cant find any solution to my issue. i really hope somebody is able to help. :(

i have 2 PCs (1 desktop and 1 laptop) both running Windows XP connected to my modem/router. the desktop is connected through a wireless adapter, and the laptop is connected directly using an ethernet cable. i have run Windows "Network Setup Wizard" on both PCs and they are part of the same workgroup with File and Printer Sharing enabled. this is as far as I've gone in setting up my LAN and everything works fine. i am able to see both PCs under My Network Neighbourhood and can access files from either PC just fine. both PCs are also able to ping each other by IP address and comptuer name.

the problem is this only lasts temporarily. for some reason, after a random amount of time (anywhere between 1 hour to a few days) the desktop will "drop off" from My Network Neighborhood on the laptop. when i try to click on the desktop or workgroup in Network Neighbourhood i suddenly get the error "You might not have permission to use this network resource. Contact the administrator of this server to find out if you have permissions. The network Path was not found." after this happens i am no longer able to ping the desktop from the laptop either by the IP address or computer name.

however I am still able to ping the laptop from the desktop by IP address and computer name, although in Network Neighbourhood the laptop can no longer be seen as part of the workgroup. I am still able access the laptop and its files from the desktop using the \\*computer name* command and this will bring up the laptop name again in Network Neighbourhood.

one more thing i noticed is, once I've pinged the laptop from the desktop i found that i can again ping the desktop from the laptop, but only with the IP address. If I try to ping the desktop by computer name it still times out. howeer, this also lasts temporarily... after a while, the laptop is also not able to ping the desktop IP address again.

the only solution so far is to restart the router. once the router restarts and both PCs reconnect to it, then the LAN is working fine again... that is, until the problem above starts up once again! cry.gif

my modem/router model is D-Link DSL-2640B.

some additional info:
- i've assigned static IPs to both PCs so they always have the same IP address from the router.
- i've tried disabling the built-in Windows firewall on both PCs but the problem remains.
- i do not have any other anti-virus or firewall programs installed.
- i've disabled "Computer Browser" service on the laptop so that the desktop is always the Master Browser (some forums said this might help but it didn't).

does anyone know what the issue could be? i'm not even sure if it's an issue on the desktop, laptop or something to do with the router. i am prepared to get a new router but i'm not sure if that is the answer.


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#1
June 28, 2011 at 07:19:16
This sounds like an issue with the router. Click on my name above in my response and read my "how-to" guide titled, "Troubleshooting Wireless Issues" and go through the steps.

If none of the above fixes the issue, try a different router that you know is working properly. If the problem goes away, it's the router.

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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#2
June 28, 2011 at 08:39:24
hi curt. thanks for the quick reply. i took a look at your troubleshooting guide but i have no issue with my wireless connection. the signal to my desktop is "excellent" and although the PCs are having trouble seeing each other, both are still able to connect to the internet via the router.

i'll have to borrow a router from a friend to test but i'll definitely give it a go and see if the same problem occurs. what really bugs me is everything is working fine again once i restart the router (without restarting the PCs) and this can even last for a few days. i'm not sure what is causing the issue at random.


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#3
June 28, 2011 at 09:06:03
That guide contains some basic troubleshooting steps that are the same whether you're having wireless issues, or just router issues. In a lot of cases, the two are one and the same and are a result of a router that's dieing. I recommend you go through the steps before to rule those things out. It might be a firmware upgrade will fix your issue.

what really bugs me is everything is working fine again once i restart the router (without restarting the PCs) and this can even last for a few days. i'm not sure what is causing the issue at random.

This is usually indicative of hardware issues with the router itself. It's still worth ruling out the firmware, but in my own experience, when this starts happening, your router is on it's last legs.

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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#4
June 28, 2011 at 15:42:23
well, the router is new (less than 6 months old) but it could still be a faulty unit. i'll try upgrading the latest firmware from d-link and see if that helps. *crossing my fingers*

thanks again for the advice. will report back.


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#5
June 29, 2011 at 08:03:13
I've seen hardware that is "bad out of the box" so a device that goes bad after several months isn't a surprise.

This is why I always hang on to my receipts until the warranty period is over.

If you don't have the receipt but bought it from a reputable place that uses computers for their sales, they will be able to find the transaction to verify it's still under warranty and should swap it should it be bad.

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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