Wireless Physical Adapter Keeps Disappearing?

Aug 6, 2011

I've had a strange problem with my laptop for quite a while now. From time to time, my entire wi-fi capability vanishes. The green wi-fi light goes off and my Intel PROset/Wireless tells me that I do not have a wireless physical adapter installed.From there, I go to Network Connections. Sometimes, I can hit "repair" under Local Area Connection 3 and after some struggles, the green light will come back on. However, sometimes when I go to Network Connections, I cannot repair the Local Area Connection, because the 1394 Connection is no longer even listed and, from all ways of searching, doesn't even exist on my laptop.In that case, I have to restart my laptop. Sometimes, a restart works and the wi-fi capability magically returns. Sometimes a restart does not work, and I have to power off, wait, and power back on my laptop. And sometimes, I have to keep rebooting SEVERAL TIMES in a row before I get wi-fi back.

I'm not sure what to do for it, nothing has changed with the router or the location of the router. My laptop will be fine for a couple of weeks, or I may lose wi-fi ability a couple of times in a week or so. However, at the moment, I lose my wi-fi adapter frequently, often every two minutes to perhaps every ten minutes. It has "acted up" this badly only once before (probably a month ago), and I just keep rebooting for a couple of days until everything seemed to calm down. However, I can't keep just restarting my laptop every five minutes

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Gateway NV53 Wireless Adapter Disappearing?

Sep 24, 2011

I'm trying to diagnose & repair a problem with the built in wireless adapter on a gateway NV53. The OS is 64 bit Win 7. The computer isn't mine, I was just trying to repair it for a friend. Initially, the wifi worked fine; the disk drive seemed to have a bad laser or something, sometimes there were problems with printers, it was slow to start, etc., so I thought I would just backup everything, "restore to factory defaults" (reformat & reinstall OS from hidden partition), then copy everything back / reinstall programs. I wanted to reformat just to clean it up, etc. After reformatting and updating windows to the latest version, it seemed to work fine (I hadn't tested those other problems, they are unimportant). However, after the computer is on for awhile - anywhere from a few minutes to a few hours - the wireless adapter suddenly can't see any networks. There are several networks in the area, so I know it isn't a problem with my router (also, other comps. can see them all still) After awhile longer, the wireless adapter disappears completely from device manager. I think that when it initially loses track of all the networks, the mouse, typing, etc. slow down and have jerky movement for a minute (may be incidental). When I restart the computer, the adapter works fine again, but of course, only for awhile.

Things I've tried:

-Setting the power settings on the adapter (don't allow power saving to turn this off.. box)
-updating drivers
-updating windows
-running antivirus
-uninstalling the antivirus

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Mar 25, 2013

I purchased an Alienware M17x R4 about 2 months ago and it was working perfectly until yesterday. After using it for a while, it disconnected from the WiFi, and after restarting the laptop I got a pop up message saying a physical WiFi adapter is not installed, meaning I can no longer use my wireless connection, but only a cord. Going to device manager, I did not see the wireless hardware on the list of network adapters (Intel® Centrino® Wireless-N 2230 With Bluetooth 4.0), however it is still listed for the Bluetooth. I have already tried reinstalling the drivers, system restore, dell diagnosis (which says there is no problem), AlienAutopsy (which also said there is no problem) and scanning for hardware changes from the device manager, none of this has fixed the issue at all.

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Dell :: Inspiron 15R - Physical Wi-Fi Adapter Not Installed

Jan 26, 2013

I have recently gone as far as restoring my computer to its "factory" state to try and combat this issue.

Unfortunately, I'm not sure there is much else I can do at this point - the issue has not been resolved.

I re-installed factory drivers for my adapter, then replaced those with updated drivers from Intel. I was 'alright' for a while, but have had to launch Device Manager to re-enable the adapter, or restart my computer entirely because it failed to display my adapter at all. At this point, I get no result with either.

I have tried to 'recognize' the adapter as a new device (added hardware), but that didn't solve anything - it duplicated it in Device Manager and then displayed the yellow exclamation point indicating it needed new drivers - I attempted to update but it displayed an error, so I ended up uninstalling the duplicate.

At this point, I feel like it's the hardware that is the problem, and not my computer's ability to recognize it. Though I have been able to connect to my network in the past, its ability to function would be patchy, at best, if I could get it to work at this point. Should I try to reset/replace my wireless card, or is there something else I can try?

My 'network card' is fine, according to a diagnostic, and my Bluetooth works fine.

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Dell 15r Laptop - Physical Wifi Adapter Is Not Installed

Sep 8, 2012

I'm using dell 15r laptop and intel wifi Proset (win7 32bit), it works fine most of the time. But today i have one issue with it, i received a bubble message at the taskbar saying that "a physical wifi adapter is not installed", when i opened device manager there was no network adapter showing in there, i also tried to reinstall the driver but it's still didn't work.

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Dec 13, 2011

I have new DIR-615 D-link router. Since we installed it the network has disappeared randomly off the available networks list, and when I try and open Google Chrome it says there's DNS error. Troubleshooting through windows networks doesn't work because it can't find any problems since my network doesn't even show up on the list. We've even done a factory reset and the problem persists, and it does this about once a day. Resetting the router temporarily fixes the problem. This problem is happening on all 3 laptops in our home, two of which run windows 7 and one which runs XP.

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Cisco Linksys E3000 Wireless Router / Network Places Keep Disappearing?

Jun 25, 2011

Windows 7 64-bit -> cable directly to router
Windows 7 64-bit -> wireless
Windows 7 64-bit -> wireless
Playstation 3
-> Wireless
Xbox 360
LAN cable from router to 360

Scientific Atlanta 2203C modem to a Cisco Linksys E3000 wireless router.Ok, so if I turn everything on I can see all computers from all computers, but after a few hours/days (random time) everything disappears, and I have to unplug the router and then everything is back. Is there a way to stop this, and just have everything just be there all the time?

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:UsersJohn>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : John-PC
Primary Dns Suffix . . . . . . . :


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May 6, 2012

My new EA4500 works fine all day, both wireless and wifi, on both bands, but nearly every evening, the wifi signal disappears, as shown on a wifi app for my smart phone, but not on Issid on my laptop, strangely, and my PC laptop and iPad both disconnect, then reconnect.  Smart phone disconnects too.  It isn't like the signal drops in strength, it just goes away! I have tried various settings on modes, and bandwidths, I am using different SSID's on each band, WPA2 security with a long non-dictionary passphrase and MAC filtering.  The hardwire connection works great at 30+ Mbps even when the wifi is disappearing from the wifi scanner and the wifi connections are dropping.  In other words, the cable connection/modem is working fine, but the wifi radio signal stops or the SSID drops off the signal.  I really can't tell, but I know it is becoming very frustrating.  The old WRT54GS works fine if I put it back on-line in the evening when these things start to happen. 
I have turned off everything I can think of in the house that transmits or might transmit, in case it is an interference thing.  I have tried disabling the 5 GHz side, since I can't see what is happening on that band, and the last thing I tried was changing the MTU from 1500 to 1400.  So far, the past evening, it was okay, but I am not confident it will stay that way. 

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Dec 26, 2009

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Mar 23, 2012

When I map a network drive it disappears every time I reboot my computer how I can keep it from disappearing? I am running Windows XP Professional

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Jun 7, 2011

We have a modified hosts file on each of the computers here at work. This way we can have multi servers, in multi locations that can all be used by everyone for email & our finance program.However, there is one user who the hosts file keeps disappearing. Over the last 2 days it has disappeared 3 times (at least).The user has ran the symantec corp antivirus (at least a couple of times). All risks found have been quarentined and deleted, ran again and nothing found. Also ran Malwarebytes, which was clean. And ran ComboFix.At this point the hosts file has been fixed after running ComboFix.

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Dec 3, 2012

I have had the virgin media superhub on 30mb broadband for about a month and over the last week I have been disconnecting from my network up to as much as 3 or 4 times a minute or sometimes once in five minutes and other times it just vanishes from the network list for about 30 seconds then re-appears, sometimes when I disconnect it re-connects almost instantly other times I have to wait about a minute or sometimes even longer even though I can permanently see my neighbours network and my laptop does not have this problem.. I payed �50 for a new wireless card to try and fix the problem and it was fine for a few weeks now it is the same. Restarting the router makes no difference and this is happening all constantly over the last week without fail, i have tried updating my wireless drivers and using different wireless cards.

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Icon Constantly Disappearing Then Reappearing Within A Second?

May 9, 2012

It's been doing this for over 7 or 8 hours now. And no, there's no network connection, that's what the problem is here. This is a Windows XP desktop.Basically what it's doing is within a second, this icon disappears from the taskbar, then reappears, over and over again: When I hover over it, it gives me a message about not being connected. I can't get the exact message screencapped and I can hardly even read it, it disappears too quickly.Sometimes it gives me this instead, and the connection works, but only for as long as this icon is there:But it disappears too quickly for me to load any pages completely, so they always end up being incomplete pages. When I hover over this one, it says acquiring network address.When I click repair, it gets stuck on "renewing IP address" every time, without fail.

Previously the internet connection would drop occasionally, but restarting the computer has always brought it back. I have tried this countless times by now, I have tried clicking repair, I have tried resetting the router, I have tried manually removing the connection then reconnecting to it, I have tried command prompt and running through the ipconfig flushdns, release, and renew commands, I have tried logging on as a different user account, I have tried uninstalling my wireless adapter software then reinstalling it, I have tried using a different adapter [I get a different error with that one], I have ran a scan with Malwarebytes' Anti-Malware then retried all these things, but that didn't fix it either. If my brother wasn't asleep I'd be wiping the hard drive by now as a last resort. And I will be doing this first thing in the morning if it isn't fixed.

There is one other computer on the wireless network, and its connection never drops. Ever. It's a Windows 7 laptop. There are two other computers in the house, but they both connect using the ethernet cable, and those never drop, either. The two Wiis, the Xbox 360, and the 3DS also connect wirelessly, and one of the Wiis drops occasionally as well -- and it's not connecting right now, either.There is one more PC in the house, which also runs Windows XP, but I haven't gotten it to connect in weeks and I've pretty much given up on it. It'd be nice to get that to run, too, since I have to share this computer, but it's 7 years old, it's just too old and is stuck on "acquiring network address" with either adapter, if I'm remembering right.

This is everything I know. This problem is still occurring, and it just occurred randomly today, while the computer wasn't even in use. I can connect to the internet with a wired connection, but stretching the wire across the house isn't something the homeowner wants me to do, so I can't keep it permanently, as much as I desperately want to.I looked around at a few other threads and there was some sort of Wifi program I can install? But it won't install. Or rather, the .net framework is what's not installing. So I guess I can't use that. Hope it makes finding the problem still possible though, this is the only computer I have left since my other one won't connect anymore either.

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Oct 5, 2011

I have a Pix 501 vs. 6.3(3).  I have made changes to some Access Rules that made other rules disappear.  When I try to recreate them I get an error that includes "Possible duplicate entry" statement.
The rule appears to be active, so how can I resurrect it in my Access Rule list?

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Aug 26, 2012

I am trying to set up a pair of 1941 routers in a HA configuration to act as L2L VPN gateways. The active router of the pair should distribute routes to the remote destinations using OSPF to internal routers. The VPN part is working fine and the routers are correctly advertising routes to internal hosts, however my problem is that when an IPsec sessions disconnect, the routes disappear and therefore internal hosts cannot reestablish a connection. If the remote end establishes a connection, the routes appear again and connectivity is restored.
My setup is as follows: (ASA) --> (pvpn01 & pvpn02 HA pair) --> (internet) --> (remote peer)
The other router in the pair has exactly the same config except with different interface IPs. The remote end is configured to talk to the HA address VPN routers are both running IOS version 15.0(1r)M9.
When I initially boot the routers, the route for appears in 'show crypto route', and is advertised to neighboring routers. If I ping an address on that network an SA is established and stays active as long as there is traffic flowing. pvpn02#show crypto  route
If I then stop traffic flowing over the tunnel and wait until the IPsec SA lifetime is expired, the route is deleted from the system routing table and therefore not distributed by OSPF. The result is that internal hosts cannot reestablish the tunnel as the other routers have no route to the network.
Is this a bug, or is there another way to get the RRI routes to persist on the active router?

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Apr 26, 2011

Running OS X 10.5.8 on an old MacBook Pro on a wireless network. It might be relevant that I recently upgraded the wireless router and the DHCP-assigned IP addresses changed. Before that, everything worked reasonably well.

I can connect to the MBP from Windows 7 computers on the network, logging in with a user name and password, and access the files there as expected.

But the MBP disappears from Windows Explorer after a few minutes. I can usually add it back (always checking the box to remember it) but it just keeps disappearing. Sometimes when it disappears, I can't add it back and when I try, Windows Explorer says, "can't find."

How can I get this share to stick?

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Wifi Disappearing Refusing Authentication From Multiple Devices

Aug 17, 2012

The original network had a Zylex router, Netgear Switch. There was 2 pc's, one XP and Win 7. There is also 3 tills connected too. There is VPN network connected too. This emits a wireless signal to connect to a scanning gun and is also used to administrate the entire network. I was told by the Administrator of that network that it shouldn't interfere with the wifi network.

The job I was requested to do was to install 3 new wall plates as the Win 7 pc was using a Belkin wireless adapter. There was 2 put inside the office where the XP and Win7 pc's are located. The 3rd was just outside the office.

Now all the ethernet connections work 100%. The wifi is another story though. It will show up in the connect too, when you try connect it will disappear/no response from AP/connect then disappear, these are random too. No order to when each is error is displayed. Even when I put in another router the exact same issues happen.

I have tried to connect to both routers wifi when it wasn't plugged into the switch. Just the router's turned on with no cables plugged in separately of course, no joy same issue with both.

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Sep 15, 2012

The original network had a Zylex router, Netgear Switch. There was 2 pc's, one XP and Win 7. There is also 3 tills connected too.There is VPN network connected too. This emits a wireless signal to connect to a scanning gun and is also used to administrate the entire network. I was told by the Administrator of that network that it shouldn't interfere with the wifi network.The job I was requested to do was to install 3 new wall plates as the Win 7 pc was using a Belkin wireless adapter. There was 2 put inside the office where the XP and Win7 pc's are located. The 3rd was just outside the office.Now all the ethernet connections work 100%. The wifi is another story though. It will show up in the connect too, when you try connect it will disappear/no response from AP/connect then disappear, these are random too. No order to when each is error is displayed. Even when I put in another router the exact same issues happen.I have tried to connect to both routers wifi when it wasn't plugged into the switch. Just the router's turned on with no cables plugged in separately of course, no joy same issue with both.

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Mar 28, 2012

I created a wlan just for our wireless IP phones.I assigned an interface I created which in turn was set to a specific port on company 2504 WLC.  Connecting switchport is set to trunk. Right now I can't ping the voice wlan interface.

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Jun 12, 2013

I have a laptop here that I can't seem to turn wireless off on via the switch. While the obvious choice is hardware failure, it's nearly a brand new Dell Precision M6600 and I hesitate to jump to conclusions.

The physical switch on the system will not toggle wifi on or off; it is always on. I can disable it via Windows (Win 7 Pro), or simply disconnect from the network, but when I do it does not remember the wifi passwords, which may be a separate issue.

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Jun 24, 2012

I've been using a WRT120N on a local area connection.The WRT120N acts as a gateway and also to connect to the PPOE connection, via a bridged adsl modem.I've noticed that the LAN port 1 was flashing although the network cable was disconnected from the physical port. I've restarted a few times but to no avail as well. Ever since that, I've noticed that connection through cable are unstable and hard.Now, I'm not able to reset or upgrade the router's firmware.Is there any other way to be done so that I can get this router working as normal again.

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Jan 29, 2012

i want to know the physical connectivity of the two pc's

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Apr 22, 2011

I have tried changing both the router setting and the computer to force a 100 Mb/s connection, but this results in a complete failure to connect.  The LAN connection only works in 10 Mb/s mode.This is the first time I've ever experienced a LAN that was slower than my internet connection.Yes, I have upgraded to 1.02A firmware.

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Cisco VPN :: ASA 8.3 VPN On Physical IP Address Only?

Aug 9, 2011

Is-it possible to configure a dedicated virtual IP address for VPN terminaison on ASA in version 8.3 and later ?I don't want to use physical IP address on my outside interface.

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Determine Physical Location Of IP Address?

Jul 20, 2011

Do you know an easy way to determine the physical location of the device were an IP address is attached? IP Geo location doesn't work well.Is something like this possible? I know it could be if you are the network administrator and know the location of your equipment and stuff.

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Identifying Switches / Physical Path On A LAN?

Apr 21, 2011

I'm a network admin for a medium-sized (500-700 people) multi-site business and I have a simple question. Is there any utility or method I can use to identify the physical path a packet of data takes from a workstation on the LAN to a server on the same LAN?

For example, if I send a tracert command at google.com, I can see every router the packet touches before it gets to Google's router. Is there a method I can use to determine a similar path with switches in my internal network? If I use tracert or pathping, I only get a single hop since the workstations are on the same LAN as the servers even though I know there are two physical switches between them.

Basically, I want to send packets from a group of workstations behind a couple switches to a server and see if the packets are being lost in the switch somewhere to identify if there is a failing switch or something causing network slowdowns. map out the network more accurately so it would be useful to know.

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Jun 14, 2011

what is physical diffrance between switch and router?

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Nov 7, 2012

Today I woke up and wanted to connect to the internet via my laptop. The current network I have is the DSL modem connected to a WR841ND TP-LINK router, and then connected via LAN port to my desktop PC, and via Wi-Fi to a Laptop.However, my connection was unsuccesful. I power cycled both the modem and the router, awaited for a stable connection, and tried again with no result.That's when I noticed the lights on my router seemed strange. While the router's LAN port 1 to the computer was connected and lit, the LAN port 4 was also lit, but it wasn't connected to anything. Then I noticed my wan port showed the same behaviour, since it was already unplugged, but its light was still on.

That's when I decided to do a factory defaults reset, a hard reset, and reuploaded the firmware to the router. No change at all.I decided to connect my DSL modem to the computer directly, and internet works like a charm, so everything points to the router as the source of the problem.Now, I wanted to know. What would be the procedures I should follow to test or repair the router before declaring it "deceased"? Could this be more of a firmware problem? A hardware one?

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Nov 21, 2011

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Aug 14, 2012

I've done a very crude drawing of the network setup I'm working on. I just need to run an idea past some network guru's to see if I'm right about my idea.

The existing network consists of

Proxy Server
Several switches scattered around school

What the school wants to do is setup a side-along wireless network that uses the same physical switches but on a different subnet. The current subnet is 10.172.1.x .

To facilitate this I'm running a 2008r2 running RIP V2 to route internet traffic to 192.168.1.x subnet. I've had the wireless units use a static address and their own dhcp servers on the 192.168.1.x subnet. Wireless devices found their way to the internet fine. But I'd like to control the addresses from a single point of contact, hence the 2nd domain server running 2008r2. There are reasons for using a 2nd server, I've covered this in previous topics. If it's important, lets call it an intellectual exercise and leave it at that.

The question(s) : If I run a DHCP server on the 2nd server serving 192.168.1.x addresses, then any device on the physical network will obtain either an 192. or a 10. address correct ? The wireless devices will only take a 192. address because the wan address is statically assigned to a 192. address ?

The 2nd question : By setting a static routes out of the 2nd nic on the 2nd server, I can control the dhcp server so it will ONLY route dhcp requests to the statically assigned wireless devices ?

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Sep 24, 2011

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Feb 15, 2012

I have my wan connection on the eth0. The bandwidth is 2mbps. I am running qos on that interface saying can use 80% of the bandwidth and can use 20% of the bandwidth. I Also have vtun VPN inteface to our branch office. I also wan to run some qos on that interface. How do i go about allocating the bandwidth on this interface? it is actually going via the eth0 interface, but the system actually see's it a an independent interface on its own right, so it requires it's own qos policy.

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Apr 12, 2012

Is there any way to get an ip address through it's physical location? I was asked this by a friend and it's a good question. We know how to get the physical address by it's by coordinates, but is it possible to reverse it, getting the ip assigned to the physical address?

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