No wireless networks were found in range?

All of the sudden today, my notebook stopped syncing to the internet. I am connected wirelessly via a router and I have been troubleshooting this for days. I really have no idea why the notebook shows that there are no wireless networks in range. The other computers on the network show the wireless networks in the building and can connect to the internet just fine.

I didn't change any settings. All I was doing was checking my email on Outlook and then 5 minutes later, I can't even connect to the internet. Anyone have any ideas???
:confused:

Perhaps ypur wireless NIC or software failed.
Are there any error or warning entries in the system event log?
Does device manager show the wireless harware to be operational?

The same thing has happend to me about 5 times now. The wireless cards I was using worked fine on other computers at the time of the incident, but at the computer with the problem, it would just not get any connection even for just scanning for a wireless network. The router and all the other systems on my network was running fine.

At first I thought it might be the firewall I was using which is Zonealarm, so I disabled that and nothing happend. Uninstalled it and nothing happend.

Just like BaCardi, I wasnt doing anything out of the ordinary at the time the incident occured. Out of nowhere I just lost my internet connection and until I couldnt find any solution, I just reinstalled Windows. Now it has happend again so Im wondering if you guys could help us. Thanks!

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Originally Posted by ua549

Perhaps ypur wireless NIC or software failed.
Are there any error or warning entries in the system event log?
Does device manager show the wireless harware to be operational?

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On my notebook comp, the device manager indicates that the wireless NIC is working properly.

I checked the system event log in the control panel and did notice some errors and warnings. On the day that I started having these probs, the system event log recorded multiple errors from DCOM and multiple DHCP warnings, as well as some DHCP warnings and errors in the previous days leading up to notebook comp not being able to see wireless networks.

I'm really stumped. :(

In device manager delete the wireless NIC then let Windows discover it and reinstall it.

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Originally Posted by ua549

In device manager delete the wireless NIC then let Windows discover it and reinstall it.

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Hooray! That must've done the trick. I don't know how. I know know why. And I really don't care, but it works again! YAY!!!!!!!!!!!!

I have had this problem for months now. It is really annoying however i do not have the time to re-install windows. Which has fixed this problem before. I ahve re-installed the hardware 2 times. Nothing seems to be working, anyone else have any ideas?

There can be many reasons for Wireless Not to work.

The following is a long story but it might help you to find the "Bug".

In General, you can debug the Network Setting of the computer following these steps.

Step One. Check the Network parameters in the Computer's Device Manager. Make sure that the drivers are installed correctly; there is No IRQ conflict, and No Ghost installation( http://www.ezlan.net/faq#ghost ).

Step Two. Verify Basic network setting in the OS, http://www.ezlan.net/Installing#verify

If the above two Steps indicates that every thing looks good but functionally it does not work.

Step Three. Check (and repair if necessary) the Socket Layers, Winsock, and or refresh the TCP/IP Stack, ( http://www.ezlan.net/clean#refreshnet ).

Once you ascertain that the Network settings per-se are configured correctly.

Wireless, check the basics.

Wireless Configuration.

Wireless Security.

:sun;

I have a new Acer laptop and I found that it could not see the wireless router, despite being right next to it.
The solution to the problem was to connect the power supply to it, so that it was not running off the battery. This suggests that to make that initial connection it needs some extra power that the battery cannot provide.

There is a power setting that allows the system to turn off power to certain devices. Once the power is off, it won't resume until the machine is connected to wall power. The solution is to not let the system turn off power to your wireless NIC.

Most newer Laptops usually have double power saving system.

One is Native to Windows (Power Saving in the control panel), and one is usually a propriety manufacturer’s application loaded at startup.

Propriety applications usually have a special setting for the Wireless Card.

Make sure to check both.

Thought i should finally reply again. My problem ended up being with the button on the laptop. There is a button on the front of my hp which enables or disables the wireless network. Turns out it caused a conflict between the windows disable through device manager and however it disables, which must be physically cutting off the power or something. But regardless i did a series of dsiabling through device manager and restarting and enabling and pressing the button and things, and it finally began working after a while. I do not really know how.

roboticsguy, hey man good to hear that you solved your mystery. Dude! You dragged up an old thread! Ahhh, memories! As for me, I also found out why I wasn't connected. I am embarassed to say that there is a switch on my laptop that turns on/off the wireless card. I accidentally had it turned off. I don't know how. Maybe I bumped it or something. Well, I actually went through many days of troubleshooting the software until one day I just noticed the little light near the wireless switch was off. Geez! Well, at least I figured that one out. :p

Yeah thats how i came accross mine... i had the card enabled and it wouldn't find any wireless netwroks and i just noticed that the light wasn't on. But it took some work to get the button working again with windows.

I really should get more involed in some of the threads on this site, lol.

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Originally Posted by roboticsguy1988

Thought i should finally reply again. My problem ended up being with the button on the laptop. There is a button on the front of my hp which enables or disables the wireless network. Turns out it caused a conflict between the windows disable through device manager and however it disables, which must be physically cutting off the power or something. But regardless i did a series of dsiabling through device manager and restarting and enabling and pressing the button and things, and it finally began working after a while. I do not really know how.

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I had to sign up just to thank you for this post. I've never noticed that button on my laptop before. I've been fighting for a good hour with getting it connected and I read your post and it immediately solved the issue. Thank you!

(and sorry to drag up an old thread!)

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Originally Posted by roboticsguy1988

Thought i should finally reply again. My problem ended up being with the button on the laptop. There is a button on the front of my hp which enables or disables the wireless network. Turns out it caused a conflict between the windows disable through device manager and however it disables, which must be physically cutting off the power or something. But regardless i did a series of dsiabling through device manager and restarting and enabling and pressing the button and things, and it finally began working after a while. I do not really know how.

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OMG !!!

had to sign up just to thank you for this post. I've never noticed that button on my laptop before. I've been fighting for a good hour with getting it connected and I read your post and it immediately solved the issue. Thank you

it jus click "Fn: click and "F1" on my Hp

OK I have to say that that button is really annoying my wireless works now because some how I hit the button with out knowing it and I just tried it and it works now. Grrrrr Thanks for that tip.

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Originally Posted by BaCardi

Hooray! That must've done the trick. I don't know how. I know know why. And I really don't care, but it works again! YAY!!!!!!!!!!!!

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I'm having the same problem as you had a few years ago. You said that the following advice worked:

"In device manager delete the wireless NIC then let Windows discover it and reinstall it."

I'm in device manage. How do I identify the NIC? It should be the wireless adapter listed under the network adapter tab? Just wanted to confirm before I delete something!

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Originally Posted by Barbara

. . . I'm in device manage. How do I identify the NIC? It should be the wireless adapter listed under the network adapter tab? Just wanted to confirm before I delete something!

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Yes.

Thanks so much for your speedy reply. And one more followup question. If I delete the NIC adapter in device manager, can I be certain that my computer will find it again somewhere on my computer? Or might I need a disk, or access to the Internet? Thanks!

It should use the same driver that is currently on your computer, unless you provide an updated driver.

When looking for a solution to my HP Elite notebook losing the wireless networks and reading the postings I tried enabling and disabling devices as posted. I started looking at the buttons on the top tray and pressing them, I :)found the button for the wireless networking. The icon lit looks the same as the first button on the bottom of the laptop. After pressing that button, the wireless button was then blue (it was amber when I could not access the wireless networks) and I can now see the wireless networks, including my own secure network.

Thanks to everyone for their postings as it led me to the solution to my problem.

Glad to hear you found the solution dfrazier. The hard switch for wireless can be an easy thing to miss.

Off topic: This thread seems to be some kind of magical SEO magnet. Post necros for 5 years running.

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Originally Posted by roboticsguy1988

Thought i should finally reply again. My problem ended up being with the button on the laptop. There is a button on the front of my hp which enables or disables the wireless network. Turns out it caused a conflict between the windows disable through device manager and however it disables, which must be physically cutting off the power or something. But regardless i did a series of dsiabling through device manager and restarting and enabling and pressing the button and things, and it finally began working after a while. I do not really know how.

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I had to register just to say thanks for the fix! There is no LED for or physical power button on my wireless card. That is why I did not think to check to see if my wireless card was powered down. In my case, the Function + F2 buttons on my Acer laptop toggles the power on/off. Thanks again!