2 machines cant connect wifi

Nvidia / Awrdacpi
August 11, 2009 at 11:19:58
Specs: Microsoft Windows XP Professional, 3.2ghz / 3gig
i have 3 machines wired (ethernet) and 3 laptops (wifi) on my network.
The laptops stopped connecting to the router 3 days ago.
Now one of the laptops can connect and the other 2 cant.
the 2 laptops that cant connect CAN see the router(it appears in the list of wifi devices) but both laptops will not connect to the router.
I have tried changing the channel that seemed to help for a day then stopped. I cant ping the router from the 2 non connecting laptops.
can anyone shed any light on this problem?

any help would be appreciated
thanx in advance
Auldy


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#1
August 11, 2009 at 14:07:00
What happens if you reboot the router?
Are you using security encryption on your wireless?
"I cant ping the router from the 2 non connecting laptops."

Of course you can't. If they were connected you would be able to ping.

Using one of your non-connecting systems, rightclick your network connection icon in the taskbar and click on "View Available Wireless Networks" Is your wireless network visible and at what signal strength?

Do you have any other devices in the near vicinity that may be interfering with the signal? Cordless telephone systems can sometimes do so.

Goin' Fishin' (Some day)


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#2
August 11, 2009 at 14:22:03
Both machines that CANT connect CAN see the router and the strength is excellent.

I have rebooted the router and also held the reset button for 30 seconds as told to do by bt. This puts the router back to factorey defaults. After that I had to re-enter the WEP key.

My laptop can see and connect but the wifes and my daughters can see the router with an excellent signal ,, but wont connect.

I have selected the repair option also, it disconnects the wifi NIC card , re-initialises it and hangs at the part where it tries to connect. Times out. never gets to the part where it renews the IP. ?????

beleive it or not , I thought I had came across most problems in all these years. Im a programmer by trade, but , this has me stumped.

thanx for taking the time to try help me resolve this :)

any help would be appreciated
thanx in advance
Auldy


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#3
August 11, 2009 at 14:51:26
With WEP you need to ensure that the client machines are set to the same key as well as the same key sequence number.

Are you using 64 bit or 128 bit encryption? In the router Wireless security settings are you setting it as key 1,2,3 or 4?

Goin' Fishin' (Some day)


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Related Solutions

#4
August 11, 2009 at 15:06:10
hi richard
both the non conecting machines have the same WEP key. there is a box next to the key index number , I have this UN-CHECKED and 1 is the number in the box on the client machines
Auldy

any help would be appreciated
thanx in advance
Auldy


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#5
August 11, 2009 at 15:08:29
hi richard
my daughter Is using my laptop at the min ,, which I dont like :) ,, but I just looked and the settings are the same ..

key index 1 , and box unchecked

thats on the machine that can connect with no problems.

Auldy

ps: using 64 bit encryption

any help would be appreciated
thanx in advance
Auldy


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#6
August 11, 2009 at 16:36:49
Check in the my network environment whether the Wireless connection, listed there, has a number at the end, e.g. something like (2).
If so, there are more than 1 wireless configurations for the same wireless card stored in the registry.
Windows gets confused on that sometimes, so that it uses a part of lets say "wireless connection" (without any number at the end) and another part of "wireless connection (2)".
In that case, open regedit and search for the wireless connection exactly as named in the my network environment.
When found, at the left side, you'll see "Connection" is highlighted. Directly above, there is a long hex key in brackets like this "{333FA72F-4CB2-4417-B0D1-5DFF0E0E751C}".
This key is not exactly the one, you'll have because it depends on the used network card.
Anyway, click the key in brackets and delete it completely.
Press F3 to continue searching.
When all the "wireless connection" entries are found and deleted, I think there are 3 of them, close regedit and restart windows.
A new wireless connection will be created automatically. Configure the new wireless connection (encryption key and SSID) and connect to your WLAN router.

Please send a reply, if you solved the problem !!!


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#7
August 12, 2009 at 04:50:23
hi paulsep, thanx for taking the time to help me.
can you please tell me how to "Check in the my network environment"

do you mean , select, open network connections from quick menu when I right click on the wifi icon in the system tray.

If yes, then there is only one config for the wifi card. I even tried to delete the wireless icon in my network. could not delete it, so i tried to disable then delete but still could not.

thanx
Auldy

any help would be appreciated
thanx in advance
Auldy


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#8
August 12, 2009 at 06:08:46
Yes, when you rightclick on the wifi icon in systray and choose network connections, you have to check the name of that enty.
If there is a (2), (3) or something like that at the end, there is more than one entry listed in the registry, as described above.
You can't delete it from the network connections window.
In that case of more than one registry entry, you have to edit the registy by using regedit.

But first of all, check the exactly name of the wifi connection and post back the result.

Please send a reply, if you solved the problem !!!


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#9
August 14, 2009 at 06:07:17
hi paulsep,

in network conections the connection is called "wireless internet connection" it does not have any number after it .

how do i go about removing the keys/entries in regedit. and hopefully after that the machine will just make/use a new connection.

If im on the right track that is

any help would be appreciated
thanx in advance
Auldy


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#10
August 14, 2009 at 08:06:56
Click Start / Run and type regedit, click OK.

In Regedit do the following:
1. choose Edit / Search
2. search string is
wireless internet connection
3. start search
4. if found at the right side of the window, press the tab key to get to the left side
5. press cursor up key so that the entry in curly braces is marked
6. press the del key and click ok
7. press F3 key to find the next entry and follow steps 4 to 7 until no further entries are found
8. restart the computer
9. reconfigure the wireless internet connection and see whether it works

Please send a reply, if you solved the problem !!!


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#11
August 16, 2009 at 06:14:47
thanx paulsep
I found a hidden partition x: on my wifes webbook, so managed to do a clean install of windows. She only uses it for shopping so I backed up the "my docu*" folder and then it all worked fine

my daughter would not allow me to do this as she has a lot of personal files scattered all over a couple of drives ,, so I will try your instruction set on her machine and get back to you ...

once again , thanx for taking the time to help me out.

any help would be appreciated
thanx in advance
Auldy


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#12
August 18, 2009 at 11:52:05
hi paulsep
When i searched the registry for keys matching "wireless internet connection", all I found was a key called connection.

Anyway

I turned my daughters machine on 5 mins ago to try try resolve the problem again. the machine connected to the router automatically without me making any changes to the registry or the OS.

I have no idea how this happened. Is there anyway that My ISP could have changed some setting somewhere or can they flash (upgrade) the firmware on the router when a new version is rolled out.???

I am scratching my head on this one

but, all machines working now :)

I do appreciate all your help though

Auldy :)

any help would be appreciated
thanx in advance
Auldy


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#13
August 18, 2009 at 12:56:34
Auldy,

no your ISP could not upgrade your routers firmware.
I don't know, why it's working now, but the main thing is, that it's still working again.

Paul

Please send a reply, if you solved the problem !!!


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#14
August 19, 2009 at 11:08:48
yeah, ~I suppose thats the main thing, stops my daughter trying to take over MY laptop. Would still like to know what the problem was though, all I can think of is that some other piece of kit in my lap was interfering with the signal.

thanx for all your time and patience

Mark

any help would be appreciated
thanx in advance
Auldy


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