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Wireless internet connectivity issue

About a week ago, my Toshiba laptop started having a very odd problem connecting to wireless. When I boot it up, or when I disable and re-enable the network adaptor, it shows that it is connected to the correct wireless network, and that it has internet connectivity. Within seconds, it loses the internet connection. Pinging either google.com (or another named location) or even an IP address fails. I can't connect using a browser, etc. A wired connection works perfectly.

Also, while booting up, it can be seen in the local workgroup by other computers (peer to peer), but as soon as the internet connection is lost, it is no longer visible to the other computers. However, the laptop still shows that it's connected to the wireless network (and shows 5 bars of signal strength, but a yellow triangle that, if you hover over, says "no internet connection"). I've tried using both the built-in wireless adaptor, and an external USB adaptor (D-Link DWA-171).

I've tried disabling the Windows firewall (there's no other firewall). Disabling and re-enabling the adaptor (or even unplugging and plugging in the USB one) brings a few seconds of internet connection (and any page which was hung during loading will load during those seconds), but then the connection is lost again. I thought maybe the D-Link connection software was causing problems, so I removed that and reinstalled just the USB driver. No dice.

I'd appreciate some help in further trouble-shooting. This is very annoying, since I can get that few seconds of internet connection, and then it goes away.
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lherrou
Asked:
lherrou
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1 Solution
 
Joe Winograd, EE MVE 2015&2016DeveloperCommented:
Hi Todd,
When you have the yellow triangle that says "no internet connection", look in Control Panel>Network and Sharing Center. Click the Troubleshoot problems link. That may fix what's wrong. If not, what happens when you click it? Regards, Joe
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lherrouAuthor Commented:
Joe,

I have tried that a couple of times. It just says "Troubleshooting couldn't identify the problem" and offers me the options of Explore additional options or close the troubleshooter.
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Joe Winograd, EE MVE 2015&2016DeveloperCommented:
I see that W8 is one of your Topics. Did you recently upgrade to 8.1?
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lherrouAuthor Commented:
Nope, still on the original install of WIndows 8
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Joe Winograd, EE MVE 2015&2016DeveloperCommented:
Control Panel>Device Manager. Expand Network Adapters. What's there?
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lherrouAuthor Commented:
D-Link DWA-171 Wireless AC Dual Band Adaptor
Microsoft Kernel Debug Network Adaptor
PdaNet Broadband Adaptor
Qualcomm Atheros AR8161 OCI-E Gigabit Ethernet Controller (NDIS 6.30)
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Joe Winograd, EE MVE 2015&2016DeveloperCommented:
So it seems that your built-in wireless is not there. The D-Link DWA-171 is USB and the Atheros is your wired connection. Is there a physical switch on the Toshiba laptop that turns the wireless on and off? If so, make sure it's on. Also, what wireless router do you have and what security protocol are you using — WEP? WPA? WPA2? And are you using MAC filtering?
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lherrouAuthor Commented:
There is a physical switch on the laptop, and it's off because the built-in adaptor won't function on certain networks (which is why I have the D-Link).

The router is a Technicolor TC8305C provided by my cable company.

Security is WPA2, I am not using MAC filtering, and the laptop shows on the router's dashboard, along with my ipad, phone, and two other computers (all of which have no connection problems).
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Joe Winograd, EE MVE 2015&2016DeveloperCommented:
Remove the D-Link and turn on the laptop's wireless switch. What appears in Device Manager>Network Adapters?
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lherrouAuthor Commented:
Joe, I've been through all that. I said in the beginning that I've tried using both the built-in wireless adaptor, and an external USB adaptor. The USB adaptor works fine on another computer, and worked fine on this machine until a week ago. When I have it at my work, I have to have the USB adaptor, because the built-in adaptor won't function with my mesh.
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Joe Winograd, EE MVE 2015&2016DeveloperCommented:
OK, just trying to help you troubleshoot, but since you've been through all that, I'll drop out now and leave it to others with more wireless networking expertise than I have. Best of luck getting it fixed. Oh, one other thought. Since you said that the D-Link worked fine until a week ago, have you tried going back to a restore point from more than a week ago? Regards, Joe
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lherrouAuthor Commented:
Hmm, no, I hadn't thought of that. Thanks, I will give that a shot.
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John HurstBusiness Consultant (Owner)Commented:
First, I will attempt to help without repeating Joe (overall good advice).

Second, you say the issue is a week old.

Third, you say you are running Windows 8 and not 8.1. You probably should upgrade, but I do not think this is your issue.

Fourth, you say other devices on the router work fine.

Here is what I would look at:

1. Run TCP/IP Reset.

Delete the USB wireless profile.
Open cmd.exe with Run as Administrator.
Then  netsh int ip reset c:\resetlog.txt
Also, ipconfig /flushdns followed by net stop dnscache followed by net start dnscache

Now Restart the computer and remake the wireless profile.  Does this help.

2. Upgrade or at least download and reinstall the driver for the USB wireless.

I hope this helps but please let us know.
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lherrouAuthor Commented:
I took Joe's suggestion, and rolled back. There was a Windows critical update that installed the day before I noticed having problems. Once I rolled back before that, everything worked fine.

Of course, now I have to figure out what to do, since that update will want to install again.
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Joe Winograd, EE MVE 2015&2016DeveloperCommented:
I don't know of a good way to handle that...just keep hiding it, I suppose...certainly a pain!
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nobusCommented:
can be dying wireless card
i would test with another one
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Joe Winograd, EE MVE 2015&2016DeveloperCommented:
Hi nobus,
Todd said that it happens with both the built-in wireless card and the D-Link USB adapter — doubtful that both are going bad at the same time. He also said that the problem stopped occurring after he rolled back from a Windows critical update. So it seems certain that the update is the culprit, not a bad wireless card. Question now becomes, is there an easy way to stop the update from installing again? All I can think of is to change the Windows Update technique from Install updates automatically to Check for updates but let me choose whether to download and install them, and then consistently not install it (trying to Hide an update works for a while, but my experience is that they have a nasty way of reviving themselves, so vigilance is required).
Regards, Joe
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nobusCommented:
Joe - i know that
but that is with the card still installed - may influence the rest
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lherrouAuthor Commented:
I always keep my machines set to Check for updates but let me choose whether to download and install them, I'll just have to be vigilant.

And it's a laptop, so I'm not sure how I try another wireless card.
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nobusCommented:
you take the old one out - and install a new one - that's it
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Joe Winograd, EE MVE 2015&2016DeveloperCommented:
> may influence the rest

I suppose it's possible, but extremely doubtful with the physical Wi-Fi switch turned off.
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John HurstBusiness Consultant (Owner)Commented:
Todd - before buying anything new, you really should get to Windows 8.1. Windows 8.1 is a new operating system and not a service pack. But at least try. Why? It works better, and generally needs new drivers everywhere, wireless included. This may help, but at a minimum, Windows 8.1 is a better base to work from.
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lherrouAuthor Commented:
While the laptop has been doing what I need, I have been reluctant to upgrade. Maybe this is a sign that I should.
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Joe Winograd, EE MVE 2015&2016DeveloperCommented:
> I have been reluctant to upgrade.

Same here! I have a W8 laptop with Classic Shell that works perfectly for me. I've seen many horror stories from folks upgrading to 8.1, so every time I get the 8.1 upgrade message, I decline. I keep telling myself that one of these days, I should do it, but so far, I've remained reluctant — and my W8 laptop keeps on humming. If you go to 8.1, Todd, please post back here with your experience. Thanks, Joe
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John HurstBusiness Consultant (Owner)Commented:
I did a Windows 8 Refresh which keeps data and machines but I have to reinstall software. I did the refresh, updated all drivers and anti virus. Then I did the 8.1 upgrade which worked perfectly. I installed my software and set up. That was over a year ago and the machine has been working fine since.
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Joe Winograd, EE MVE 2015&2016DeveloperCommented:
John,
Thanks for sharing your experience — very helpful! Regards, Joe
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Joe Winograd, EE MVE 2015&2016DeveloperCommented:
Hi Todd,
Very unlike you to abandon a question, so while doing some clean-up today (to reduce my 448 open Firefox tabs), I'm hoping you don't mind a gentle ping to close this question. Thanks, Joe
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lherrouAuthor Commented:
Thanks, Joe. The roll-back worked, and I haven't had any issues since.
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Joe Winograd, EE MVE 2015&2016DeveloperCommented:
You're welcome, Todd. I've very glad to hear that. Regards, Joe
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