Wifi icon showing "No hardware installed"

The Wifi icon on the bar is showing "No hardware installed". Could it be the network adapter has broken and need replacement? Any troubleshooting I can do before sending it for repair?
Jesper

Doesn't appear to have a card installed that is being detected. Mine shown below.
Try the SMC reset suggested by leroy's post.
Reset SMC
If that doesn't work, if you live near an Apple Store, make a Genius Bar appointment to have the computer tested. Supposedly there is no charge for testing.
Genius Bar Reservation US

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I owned a vintage MacBook late 2008.the problem is my network has jammed and showed no hardware install.what should I do?

network icon showed no hardware install. Have checked the local dealer but they said the production of the hardware(air port card) has been discontinue and cannot be ordered from Apple. What should I do?macbook late 2008

Put the Serial Number in here...
https://selfsolve.apple.com/agreementWarrantyDynamic.do
to see if it is registered with Apple..
And see here for Contacting Apple World Wide for Support and Service
http://support.apple.com/kb/HE57

Hi folks, you might know how to fix this: my wifi shows (no hardware installed) then I went to system preferences and deleted the wifi connection, I went also to system information and I can not see wifi listed on Network, how can I create a new wifi ?

Hi folks, you might know how to fix this: my wifi shows (no hardware installed) then I went to system preferences and deleted the wifi connection, I went also to system information and I can not see wifi listed on Network, how can I create a new wifi or simply solve this, I have tryied shotdown pressing keys like P and R, option, etc. Please help me .

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

Wifi shows no hardware installed.

It started off with my key board. Alphabet p, k, m stopped working properly. Now i just turned on my mac amd suddenly black screen came and the screen was totally black. The led led of apple symbol wasnt working properly. So i just opened the flap and took out the battery amd ram. After that i plugged all of them back to normal. Now the laptop started but the wifi symbol shows no hardware for wifi installed. Any suggestions for these problems???

In some cases, this issue is caused by a hardware fault. A loose connection, a short circuit, or a microscopic break in a solder joint may open and close depending on temperature, making the failure intermittent.
Test after taking each of the following steps that you haven't already taken. Back up all data before making any changes.
1. If you can connect to the Internet via Ethernet, Bluetooth, or a USB network device, make sure all available OS X updates are installed. If Wi-Fi is your only means of network access, skip this step.
2.. There are a few reports that the problem was solved by unchecking the box marked
Wake for Wi-Fi network access
in the Power Adapter tab of the Energy Saver preference pane. I can't confirm.
3. Reset the NVRAM.
4. Reset the System Management Controller.
5. Start up in Recovery mode. In the menu bar of the OS X Utilities screen, there's a Wi-Fi menu. Try to connect. If it works, select Install OS X. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade, so make a note of those before you begin.
6. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

HT3867 my wifi icon show on off buttan show but not in use

my wifi icon show on off buttan show but not in use

Setting the router preamble to long does not work for me. I have tried everything.
I am connected to WiFi, according to the icon in the corner, but it just stops working at random times for all applications. The only way I can get the WiFi working again (temp fix) is to flick airplane mode on and off. Then it will work for a while, and then mysteriously stop working again, even though it says I am connected etc.
I have n 1st gen ipod touch, and two 3G phones here that can connect and stay connected with absolutely no problems, so it is definitely something with the 3GS.
I think I am going to have to try returning this iphone to Apple and getting a replacement, as I have tried everything to get it to work properly.
Not to mention the compass is VERY badly off with this iphone. But that is not as big a deal as WiFi refusing to work.
It is too bad because I get great battery life with this iphone... better than my 3G... and I am worried about returning this one and getting a replacement with poor battery life that I read so many other people seem to have.

My MacBook Pro mid 2010 was upgraded to mountain lion os x and then my wifi started saying no hardware installed

My MacBook Pro mid 2010 was upgraded to mountain lion os x and then my wifi started saying no hardware installed

Hello Harrisonhcue,
I would be concerned too if I was getting the message "no hardware installed" when trying to use Wi-Fi on my MacBook Pro. For a message like this, I recommend resetting your System Management Controller (SMC) and NVRAM.
Resetting the SMC on portables with a battery you should not remove on your own
Note: Portable computers that have a battery you should not remove on your own include MacBook Pro (Early 2009) and later, all models of MacBook Air, and MacBook (Late 2009).
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
You can find the full article here:
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/ht3964
Resetting NVRAM / PRAM
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.
You can find the full article here:
About NVRAM and PRAM
http://support.apple.com/kb/ht1379
Thank you for using Apple Support Communities.
Best,
Sheila M.

My wifi connection says no hardware installed

I cannot connect to wifi. The icon says no hardware connection

Welcome to Apple Support Communities
Reset the PRAM > http://support.apple.com/kb/HT1379 After that, do a SMC reset > http://support.apple.com/kb/HT3964
If it doesn't work, hold Command and R keys while your Mac is starting to start up in OS X Recovery, and press the Wi-Fi icon at the top right corner. If you can select a network, reinstall OS X, and if not, take the MacBook Air to an Apple Store or reseller because the Wi-Fi card needs to be replaced

HT1338 Mac Pro WiFi suddenly states "No hardware installed" but it worked yesterday.

Anybody else seeing this recently? Hopfully it's not a hardware issue.

All kinds of weird fixes for this issue have been reported, most of which make no sense. I think it's usually or always caused by a hardware fault, which may be intermittent — something like a loose connector or a failed solder joint. Almost anything might seem to fix it, at least temporarily. In some cases, a software or firmware bug may be involved.
The Apple Hardware Test doesn't find anything, as usual.
To rule out everything but a bug or a hardware fault, take each of these steps that you haven't already taken:
1. Make sure all available updates are installed.
2. Reset the NVRAM.
3. Reset the System Management Controller.
4. Boot into Recovery by holding down the key combination command-R at the startup chime. In the OS X Utilities screen, select Get Help Online. A copy of Safari will launch. Test, then reboot as usual.

My WiFi is down and says ´´No Hardware Installed´´ and I´m not sure how to fix it. I´ve tried shutting it down and pressing P, R, Command, Option, but it only works sometimes, and as a temporary fix. What do I do?

My WiFi is down and the icon states ´´No Hardware Installed´´. Sometimes the WiFi will come back, but it will shut me out after an hour or two. I´ve tried shutting it down and pressing P, R, Option, Command while turning it on, but it only sometimes works and is a temporary fix. I´m studying abroad and there aren´t apple stores near me. I went in to one before I left, and thought the tech employee had fixed it, but I started to have the same problem here. How can I fix this?

This worked and solved the problem.
Reset PRAM. http://support.apple.com/kb/PH4405
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
If this does not help, contact Apple.
Best.

Worried, wifi: no hardware installed

wi fi: showing no hardware installed, doesnt know what to do?

There is no Mac OS 9.0.x for MacBook Pro. There is Mac OS X 10.9.
There is no 2.5 Ghz Intel that will run Mac OS 9.
How old is your MacBook Pro?

I downloaded Mountain Lion,when it opened up I no longer had any way of getting onto the internet. It on the Wi-Fi: no hardware installed?? Help!

Can anyone help? I downloaded Mountain Lion and when it opened up I no longer had any way of getting onto the internet. On the Wi-Fi icon it shows: no hardware installed?? Help!

Restart the router. Wait until all the lights are lit up properly.
Restart the Computer.
Reset PRAM. http://support.apple.com/kb/PH4405
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
If this does not help, contact Apple.
Best.

No WiFi icon is shown?

no wifi icon showing and no possibilite for connection

Try this:
Open System Preferences, Click on Network and click the "+" button at the bottom of the box on the left. Select Wi-Fi for interface and you should be set.

Wi-Fi icon shows, but won't actually connect to anything

Hi all,
     Earler today, my iPhone 4 was working fine. At some point however, the internet just crapped out on me. The wifi icon shows up, indicating that it is connected, but when I go to use an application, it won't connect to the internet.
     I have tried on 3 different wifi networks, so I know it is not my home network at fault. I have tried forgetting, and then reassigning the network, and that didn't work. I have tried using safari, the app store, and several other internet-using apps, so I know that it is not just my safari settings or something.
     I have read a couple online forums, and it seems like a lot of people are having trouble after the 4.3.5. iOS update. I can't imagine that apple would take this long to put out a patch or a new update if this one is causing so many widespread problems.
     If anyone can PLEASE help me with getting my phone back online it would be greatly appreciated.
Thanks.

EC-Sam wrote:
     I have read a couple online forums, and it seems like a lot of people are having trouble after the 4.3.5. iOS update. I can't imagine that apple would take this long to put out a patch or a new update if this one is causing so many widespread problems.
Some people have problems after every update and between updates. But there are 110 million iDevices. Some of them will have problems at any time. For 110 million A LOT would be at least 10 million. Have you seen 10 million posts about this problem? or even 1 million? How about 100,000? 10,000? If you focus on the 4.3.5 update you will never solve the problem, because a quick search will show that there are always some people who have problems, including this one, and the reports go back 4 years. So instead forget that it is related to 4.3.5, because it isn't.
The fact that earlier today it worked, and now it doesn't and I assume you did not update to 4.3.5 in between, pretty much eliminates the version as having anything to do with it even in your case.
Have you rebooted the phone? (Hold the HOME and SLEEP keys at the same time for 10-15 seconds, until an Apple logo appears).
I know you are sure it isn't your home network, but humor me anyway. Reboot your home router by turning it off for about 15 seconds. If it still doesn't work go to Settings/General/Reset and Reset Network Settings. You will not lose anything, but will have to re-enter WiFi passkeys.
If you still have a problem do some basic diagnostics. Try to connect to a network, like your home network. Does the WiFi symbol appear and stay (not revert back to 3G after a minute)? Tap on Settings/WiFi and tap on the arrow to the right of the network name you are connected to. Look at the IP address. Does it begin 169, or is it 192 or 10? If it begins 169 this means that the router did not provide an IP address. If it begins with 192 or 10 it is connected to a local area network, which is good. If it is something else post what the IP address is; there's something very wrong.
Assuming it is 192 or 10, what is the DNS address? It may be 2 addresses separated by a comma; the first should be the first 3 triads as the IP address (e.g., if the IP address is 192.168.1.4, the first DNS address should be 192.168.1.xxx, where xxx is most likely 1 or 10).
The next thing to check is a computer connected to the same router. Can it access the Internet? It's always possible you have a local outage.
Assuming that none of these fix the problem Restore your phone with iTunes, and do not reload your backup. DO NOT SYNC, but see if it now connects. If it does work connect the phone to iTunes again and DO NOT SYNC, but right click on its name and chose Restore from Backup. If it still works after this you are home free, but it it doesn't you have a corrupted backup and will have to Restore as New again.

Wifi Icon Missing when I am browsing

When I first got my phone a "wifi" icon showed on the top right of the screen when I was surfing to show it was using the Wifi and not GPRS. Whilst it still appears to be using the wifi, this icon no longer shows. Does anybody know how I get it back as it is useful to easily know whether it is using wifi or GPRS.

When I first got my phone a "wifi" icon showed on the top right of the screen when I was surfing to show it was using the Wifi and not GPRS. Whilst it still appears to be using the wifi, this icon no longer shows. Does anybody know how I get it back as it is useful to easily know whether it is using wifi or GPRS.

My macbook pro 15inch running on maverick when i try to click on wi-fi says no hardware installed please help i need wifi and and under network staus wi-fi is fail and under network airport is not connected can anybody help the wifi icon has a x and does

my macbook pro 15inch running on maverick when i try to click on wi-fi says no hardware installed please help i need wifi and and under network staus wi-fi is fail and under network airport is not connected can anybody help the wifi icon has a x and does not even let me turn it on

Have you attempted to reset the SMC? That would be the first step. Hold the left control, option, shift key and the power button for about 5 seconds and release. Then try to reboot. Might as well reset the PRAM as well. Hold command, option, P, R on start up until the machine restarts. If that doesnt' have any affect we'll have to dig deeper into a potential hardware failure.
If this method doesn't work, check the webcam that will tell the problem is on the iSight & WiFi cable. If your webcam is ok, then it'll be the WiFi card problem. Hope it can help ;-)
- xia_us9

Wifi icon showing "No hardware installed"

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