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.

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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 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

Macbook Pro 13 mid 2009 Wifi reads "No hardware installed"

After installing a new screen for Macbook Pro 13 mid 2009 my Wifi reads "No hardware installed" what should I do?

Check out the threads in the "More Like This" section on the right side of this answer.
If this does not help, contact Apple.
Best.

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

Brand new imac i5 21.5" wifi says "no hardware installed"

I just bought a brand new imac i5 21.5 inches running osx 10.8.2 and minutes after having everything working, wifi stopped working and gave me a "no hardware installed" message on the wifi icon on the top right corner of my tool bar... I'm extremelly upset with it... can't find a solution anywhere. I tried to boot with wireless keyboard and mouse off and it didn't make a difference. Please Apple I need a solution! The computer is fresh out of the box! This is unacceptable.

Hi Michael Smith 677;
I suggest you take it back and allow Apple to repair it. There is no sense in you attempting to fix when it is brand new that is what they are there to do.
Allan

WiFi: "no hardware installed" on Mac Mini, OS 10.8.5

I realize that there are many existing threads on this error message, but they all seem to be related to laptops with spesific affected hardware and not a Mac Mini. So:
I have just gotten my mid 2011 Mac Mini back from service. They replaced a fauly motherboard. It was in twice. The first time I got it back home I just had the time to upgrade the OS before it collapsed again. I took it back and they replaced the motherboard anew. The one they had put in apparently had problems.
Now after the second repair job the old problems are gone but there is no WiFi. "No hardware installed" it says.
My problem is that if I take it back and have it repaired a third time and it turns out that this lack of WiFi is caused by a bug in OS 10.8.5 and not by their repair work, I will have to pay for it. The hardware is under warranty but the OS upgrade I have done myself. The Mac didn't come with OS 10.5 when I bought it from them.
So how do I know if it is a hardware faul or not? I have booted in recovery mode but there is no hardware found there either. Tried various other tips like disabling Bluetooth, deleting the old WiFi setup from the network panel, resetting SMC and so on. (Resetting nvram does not help with network issues Apple say, so I don't know why that is adviced in so many threads).

So it went in for service and they couldn't find anything wrong with it. I tried everything before handing it in and rebooted without things plugged in and so on. But now it works. No loose parts either apparently.
So there we are. Everything is working fine again by itself. For now.

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?

Wifi crashing after Yosemite install

installed yosemite and wifi worked a bit then slept and when opened was showing no hardware installed. Called apple they reinstalled, changed DNS got it working. Crashed again saying no hardware installed. Worked fine with Maverick. Apple telling me I have to take it to the store. Can anyone help?

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.

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.

My MBP suddenly shows the message Wifi: no hardware installed - Could you please help me?

My MBP suddenly shows the message - wifi: no hardware installed. Could you please help me?

try this help from Apple (is officially written for an older version of OSX, but goes for Mavericks as well.)
If that does not help, try this

WiFi drops connection and then won't let me turn the WiFi back on I used to have to restart the computer but now its showing no WiFi hardware installed PLEASE HELP!!

My WiFi will stay connected for some time but then when it goes to sleep or randomly it will turn itself off. I used to have to restart the computer a few times but now its telling me WIFI:No hardware installed Please help

My WiFi will stay connected for some time but then when it goes to sleep or randomly it will turn itself off. I used to have to restart the computer a few times but now its telling me WIFI:No hardware installed Please help

Got "wifi: no hardware installed" Problem

this problem had troubled me from 10.6 Snow Leopard to 10.7 Lion
iMac 27" (late 2009)
to be honest
my wifi (airport) can work just fine
BUT
when I "restart" my iMac everytime when I needed (system upgrade or something)
and when I bak to the system
it shows "wifi: no hardware installed" on the upper right menubar
CAN ONLY SOLVE THIS BY
choose "shutdown" , and dont even need to reset SMC or "cmd+option+P+R"
just "shutdown" the computer then press the power button
then the wifi will be back
"Restart" >>>> NO WIFI
"Shutdown" >>>WIFI back to normal

The Google DNS settings should be OK, humor me and change them to
208.67.222.222
AND
208.67.220.220 to see if there is any change. If there isn't go back to the Google settings.

Wifi: No Hardware Installed after 10.7.3 update?

I've got a MBP 3,1 which I just updated to 10.7.3 through Software Update with the hopes that the wifi updates would fix my waking from sleep issues. However, upon restarting when I click on the wifi icon it shows in grey text "Wi-Fi No hardware installed". Now I can't use wifi at all!
I've since tried downloading the combo updater and ran that and it didn't fix it.
I've also done the usual PRAM and PMU resets to no avail.
In my system profiler I see this under PCI Cards:
pci168c,24:
Type:          Other Network Controller
Driver Installed:          No
MSI:          No
Bus:          PCI
Slot:          PCI Slot 5
Vendor ID:          0x168c
Device ID:          0x0024
Subsystem Vendor ID:          0x106b
Subsystem ID:          0x0087
Revision ID:          0x0001
Link Width:          x1
Link Speed:          2.5 GT/s
This looks like it would be my airport card, but it has no driver?
Any ideas?

The wifi card is the original stock card, I have never replaced it. I have replaced my HDD and RAM though, but I doubt that would be an issue.
From kernel.log:
Feb 2 17:05:12 DKO kernel[0]: kxld[com.apple.driver.AirPortBrcm43224]: The vtable '__ZTV17AirPort_Brcm43224' is malformed. Make sure your kext has been built against the correct headers.
Feb 2 17:05:12 DKO kernel[0]: kxld[com.apple.driver.AirPortBrcm43224]: The super class vtable '__ZTV16IO80211Interface' for vtable '__ZTV26AirPort_Brcm43224Interface' is out of date. Make sure your kext has been built against the correct headers.
Feb 2 17:05:12 DKO kernel[0]: kxld[com.apple.driver.AirPortBrcm43224]: The vtable '__ZTV17AirPort_Brcm43224' is malformed. Make sure your kext has been built against the correct headers.
Feb 2 17:05:12 DKO kernel[0]: kxld[com.apple.driver.AirPortBrcm43224]: The super class vtable '__ZTV16IO80211Interface' for vtable '__ZTV26AirPort_Brcm43224Interface' is out of date. Make sure your kext has been built against the correct headers.
Feb 2 17:05:12 DKO kernel[0]: Can't load kext com.apple.driver.AirPortBrcm43224 - link failed.
Feb 2 17:05:12 DKO kernel[0]: Failed to load executable for kext com.apple.driver.AirPortBrcm43224.
Feb 2 17:05:12 DKO kernel[0]: Kext com.apple.driver.AirPortBrcm43224 failed to load (0xdc008016).
Feb 2 17:05:12 DKO kernel[0]: Failed to load kext com.apple.driver.AirPortBrcm43224 (error 0xdc008016).
Feb 2 17:05:12 DKO kernel[0]: kxld[com.apple.driver.AirPortBrcm43xx]: The vtable '__ZTV16AirPort_Brcm43xx' is malformed. Make sure your kext has been built against the correct headers.
Feb 2 17:05:12 DKO kernel[0]: kxld[com.apple.driver.AirPortBrcm43xx]: The super class vtable '__ZTV16IO80211Interface' for vtable '__ZTV25AirPort_Brcm43xxInterface' is out of date. Make sure your kext has been built against the correct headers.
Feb 2 17:05:12 DKO kernel[0]: kxld[com.apple.driver.AirPortBrcm43xx]: The vtable '__ZTV16AirPort_Brcm43xx' is malformed. Make sure your kext has been built against the correct headers.
Feb 2 17:05:12 DKO kernel[0]: kxld[com.apple.driver.AirPortBrcm43xx]: The super class vtable '__ZTV16IO80211Interface' for vtable '__ZTV25AirPort_Brcm43xxInterface' is out of date. Make sure your kext has been built against the correct headers.
Feb 2 17:05:12 DKO kernel[0]: Can't load kext com.apple.driver.AirPortBrcm43xx - link failed.
Feb 2 17:05:12 DKO kernel[0]: Failed to load executable for kext com.apple.driver.AirPortBrcm43xx.
Feb 2 17:05:12 DKO kernel[0]: Kext com.apple.driver.AirPortBrcm43xx failed to load (0xdc008016).
Feb 2 17:05:12 DKO kernel[0]: Failed to load kext com.apple.driver.AirPortBrcm43xx (error 0xdc008016).
Something wrong with AirPort I see... the driver perhaps?

MacBook Pro 17" Mid 2010 wifi "no hardware installed" fix

Hello,
Wanted to share my "wifi: no hardware installed" fix for my 17" mbp. Story is short - some time ago I noticed that sometimes after sleep there is no wifi. I'm carrying my laptop with me every day in backpack, so it just won't connect to any known network when I open it. Only reboot helped. I tried all available solutions with no luck - no matter what I do, I must reboot it every time I need wifi. Last month it stopped working completely. First, empty wifi icon, I can't turn it off or on. Finally, after reboot it said "no hardware installed". Quick googling points to dead wifi card. So, I opened laptop to see what card I have to order it online. Guess what happen, when I assembled it back? It worked! But only while it was on a table. As soon as I took it with me - it stoped working. So, I opened it again, re-seated cable from m/b to wifi card and that worked again, until next trip in backpack. So, it seems this cable becomes loose and disconnect after some vibrations. Then I put two small pieces of rubber tape (used to seal windows, very soft) on each side of cable. It's high enough to keep connector in its place when you close cover. See attached pictures. Be careful and don't put too much here - otherwise when you close cover it will damage m/b and wifi card.
So, if you're carrying your mbp all the time in backpack and wifi sudden disappear saying "no hardware installed" may be this fix will help. Note, this fix only for mbp mid 2010. I have no idea, what happen in other models. And if you're not sure - take it to service.
Before:
After:

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".
Best.

Wifi shows no hardware installed.

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