Lion 10.7.1 No Wifi hardware installed

This is driving me nuts x10. Every time I close the lid and open it the wifi vanishes. It takes 3 restarts to get it back. I've tried every suggested fix and none work. Apple, please sort this out ASAP. We are dedicated Mac users but we're feeling pretty bad about Lion or whatever is causing this issue.
John
Macbook pro 13 2.4GHz 4GB

Apple, please sort this out ASAP.
These are user-to-user forums where everyday folk post "technical" questions and offer answers to each other voluntarily. No one here works for Apple nor does Apple get involved in responding.
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Macbook pro lion 10.7.3 no wifi hardware installed

After doing loads of reading and rearch into the WIFI issues, plus having an older 2008 MBP which wasn't under Applecare support/warranty, trying various tricks to get it back <command> <option> R P power off/on, batter out, holding down 5 secs...blar blar blar, the problem always returning at some point, I gave up and purchased a USB WIFI adapter from amazon.com for ~$25.
ASUS (USB-N10) wireless-N USB Adapter
http://www.amazon.com/USB-N10-wireless-N-Transmit-Interface-software/dp/B003E649 3G
However, upon arrival, installing it and loading the driver from the provided CD, it didn't work. The driver/software was for 10.6. After searching the web, I managed to find the driver for 10.7.3.   Downloaded it and once installed, the USB-N10 worked!
http://www.wireless-driver.com/realtek-rtl8192su-adapter-macos-drivers-ver1082/
PROBLEM SOLVED!
Hardware Overview:
Model Name:          MacBook Pro
Model Identifier:          MacBookPro5,1
Processor Name:          Intel Core 2 Duo
Processor Speed:          2.4 GHz
Number of Processors:          1
Total Number of Cores:          2
L2 Cache:          3 MB
Memory:          4 GB
Bus Speed:          1.07 GHz
Boot ROM Version:          MBP51.007E.B06
SMC Version (system):          1.33f8
Serial Number (system):          W89020Y91G0
Hardware UUID:          4DD647BB-90EC-51AA-84F7-A685AB76F96E
Sudden Motion Sensor:
State:          Enabled
ASUS EZ N Network Adapter:
BSD Name:          en4
Product ID:          0x1786
Vendor ID:          0x0b05 (ASUSTek Computer Inc.)
Version:          2.00
Serial Number:          00e04c000001
Speed:          Up to 480 Mb/sec
Manufacturer:          Manufacturer Realtek
Location ID:          0x24100000 / 3
Current Available (mA):          500
Current Required (mA):          500
System Version:          Mac OS X 10.7.3 (11D50b)
Kernel Version:          Darwin 11.3.0
Boot Volume:          Macintosh HD
Boot Mode:          Normal
Computer Name:          robert mamone’s MacBook Pro
User Name:          Robert Mamone (ibook)
Secure Virtual Memory:          Enabled
64-bit Kernel and Extensions:          Yes
Time since boot:          34 minutes

HOW FUNNY! I must have had a response from the same MUPPET as you who said it's not supported!!!   I'd sent them the solution, as their product runs with realtek drivers, and they have a driver which supports mac 10.7!!
I can confirm it works. It's a realtek driver with details here:
http://www.realtek.com/products/productsView.aspx?Langid=1&PNid=21&PFid=48&Level =5&Conn=4&ProdID=231
Scroll down and you'll see the software link under Download Software
http://www.realtek.com/downloads/downloadsView.aspx?Langid=1&PNid=21&PFid=48&Lev el=5&Conn=4&ProdID=231&DownTypeID=3&GetDown=false&Downloads=true
Scroll down and here you'll see support for MAC OSX 10.7 Install Package(UI ver.1.9.7) and you can select a download site.You can actually now download it, as before I couldn't.
When I tried I couldn't, so I found the driver at another location :-
http://www.wireless-driver.com/realtek-rtl8192su-adapter-macos-drivers-ver1082/
Downloaded it and once installed, the USB-N10 worked!
I do have the odd connection issue with it when it cant' get an IP address from the DHCP server on my wireless router. Even if I had code the IP. However, 95% of the time it's ok.
Hope this helps!!

My MacBook Air wifi says no wifi hardware installed please help

My MacBook Air now says no wifi hardware installed ! Please help

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.

MacBook Pro (Early 2011) No Wifi Hardware Installed

Please help me! I'm confused.
My 13" MacBook Pro (Early 2011) Keeps saying that No WIFI Hardware is installed.
My Mac has been running great until earlier this week. I turned it off one night before bed and then the next morning as I switched it on, it said there was no WIFI hardware installed. I launched recover mode which is when I figured my WIFI works in recovery mode just not in the Mac itself. I reinstalled a fresh copy of OS X Yosemite which worked for a day, but sure thing the next day I loaded the Mac and then there was the same issue. So I reinstalled OS X Yosemite... AGAIN!! this time I hit an error, Yosemite had deleting my recovery drive and unmounted my Macintosh HD but thats anther story to fix another time. Once I finally repaired my disk to install Yosemite my WIFI was working again... until I restarted my Mac and it went off and the error reappeared. Luckily Apple released OS X 10.10.2 so I plugged in the ethernet and installed it which has fixed my WIFI... for now, I'm to scared to restart my Mac. Does Anyone know what is going on? Thank you
Like I said when it gives the error (No WIFI Hardware installed) the wifi connects in recovery just not on my Mac OS. I'm currently using my Mac to submit this question and all seems fine so far.
Thanks again.

Try these in order testing your system after each to see if it's back to normal:
1. a. Resetting your Mac's PRAM and NVRAM
    b. Intel-based Macs: Resetting the System Management Controller (SMC)
2. Restart the computer in Safe Mode, then restart again, normally. If this doesn't help, then:
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the Utilities menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
3. Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the Utilities menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu. Select Restart from the Apple menu.
4. Reinstall Yosemite: Reboot from the Recovery HD. Select Reinstall OS X from the Utilities menu, and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
            because it is three times faster than wireless.
5. Reinstall Yosemite from Scratch:
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
How to Clean Install OS X Yosemite
Note: You will need an active Internet connection. I suggest using Ethernet if possible
            because it is three times faster than wireless.

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

Message 'Wi-Fi: No hardware installed

MacBook late 2008 2 GHz Intel Core 2 Duo   OSX 10.9.2
Hi,
Some advice please re. the above situation.
I was working on my MacBook when the screen froze. I can’t remember the last time this happened. Pressing and releasing the power button to shut down did not work, so I pressed it continuously until MB did shut down.
After starting it again, I was surprised to see the Wi-Fi symbol at the top of the screen was not showing its bars as usual; in their place was a white cross. When pressed, the message ‘Wi-Fi: No hardware installed’ was revealed.
When I go to About this Mac : System Report : Wi-Fi, I see this:-
Software Versions:
CoreWLAN:     4.3.2 (432.47)
CoreWLANKit:     3.3.2 (332.36)
Menu Extra:     9.3.2 (932.35)
System Information:     9.0 (900.8)
IO80211 Family:     6.3 (630.35)
Diagnostics:     3.0 (300.40)
AirPort Utility:     6.3.2 (632.3)
When I go to System Preferences : Network, it says ‘Wi-Fi Off”.
Strangely, I did successfully get online via Safari on the MB but only once. Now, there is no internet access from the MB.
I can access internet with iPhone and iPad whose settings properly show the correct home Wi-Fi name, and I can use iTunes to pass docs from and to them when they are USB connected and just by Bluetooth.
Earlier that day, I had received a warning from a friend that his email account had been hacked. Later, whilst checking Spam folder (Yahoo), I inadvertently clicked an email from him, saw that it was indeed Spam, and quickly closed it again.
Could this have contained something that caused the above situation?
Any advice as to why this has happened and its implications, please? And how to get back to normal?
Many thanks,
Graham

I had the issue after upgrading from 10.7.3 to 10.7.4. It has persisted into Mountain Lion. Recently, my late 2011 15" MBP had its wifi card and cable replaced, along with the main logic board. The logic board was damaged by the repair staff in the process of disconnecting the wifi cable. A couple of days ago, my wifi started shutting off randomly but would return after a restart. Now I've got the "no wifi hardware installed" message again. I haven't checked System Profiler to see if the wifi card is listed. Previously when I had this message, it was not. So, yes, the hardware repair fixed the problem for about a month. And now it's back.

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.

HT2497 I accidently deleted some programs from my Mac and now I get a message Wi-Fi: No hardware installed. Is there a disk to restore my wifi? Here is my serial number C17G98TQDR17, Software Mac OS X Lion 10.7.4 (11E53)

I have a Mac OS X Lion 10.7.4 (11E53) laptop and I deleted the hardware for my wireless service. I am getting a message Wi-Fi: No hardware installed. Is there a disk to restore it?

Go step by step and check.
1. Start up in Safe Mode.
    http://support.apple.com/kb/PH11212
2. Backup your computer.
3. Empty Trash.
   http://support.apple.com/kb/PH13806
4. Re-index Macintosh HD.
    This will take a while. Wait until it is finished.
    System Preferences > Spotlight > Privacy
    http://support.apple.com/kb/ht2409
5.Try OmniDiskSweeper. This will show the storage size details of the items.
   https://www.omnigroup.com/more
   Select Macintosh HD and click “Sweep Selected Drive” at the bottom.
   Be careful. Delete only the files that can be safely deleted. If you are not sure about any file, don’t touch it.

After updating to 10.8.1 i can not connect to wifi no hardware installed , it says

When I installed the update to 10.8.1 there comes a message that there was a problem by installing.
Now i can not connect to a wifi network, when i click on the wifi at the bottom
No hardware is installed
Why is there no hardware installed?
Under 10.7 all was fine

I have MacBook unibody late 2008 with OS X Mountain Lion on board. Wifi stopped working suddenly and I spent about four terrible hours to solve a problem.
Actually, none of mentioned and googled advices helped me out to solve this issue with 'WiFi: No Hardware installed'.
Except one thing: using the wifi kext from the Snow Leopard. You may use utility and kext from here: http://rys.sommefeldt.com/2011/09/04/osx-lion-wifi.html
I hope, this can 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.

The wifi: No hardware installed issue is bad, I hv both my Mac Pro 13 and 15 inches affected. Can assist?

I have 2 Mac pro running on OS Lion and both faces airport down issues.

iTommy, I have a MBP 15" new in February with the same problem. It ran fine under Snow Leopard, which it came with. I installed Lion and it worked fine for a few weeks. It then wouldn't connect to any wifi. I followed many forums and tried everything they suggested. Deleted network settings, no change. I deleted the wifi interface in a new location, no change. Over the weekend I installed a new ssd drive in my laptop and installed the original Snow Leopard software that came with the computer and there was no wifi. I installed Lion from the USB installer I bought from Apple to see if that did it, no. Did the update to 10.7.1 with no wifi hardware still. I deleted the Library/Preferences/Network folder to force the rebuild and it didn't work. I just found this posting and this will be my next try. Here is a link to the discussion...
10.6.5 and wifi issues: Apple Support Communities

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.

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

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.

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.

Lion 10.7.1 No Wifi hardware installed

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