My macbook pro turn off itself and it wont turn on

hello i was watching video on my macbook pro and suddenly the laptop turn off by itself and i tried to turn it on but it wont

Are you connected to the charger? Is it charging? Have you tried to settle SMC?
http://support.apple.com/kb/HT3964

Similar Messages

HT4993 my iphone 4s turned off randomly and it wont turn back on, i tryed connecting it to my laptop to see if it will turn on and still nothing, i connected it to the charger, for about an hour and still nothing... why?

so i picked up my brother from school today and on the way i was getting alot of texts and i read them but didnt reply, then i put my iphone on the arm rest thing, and when i came home, it didnt wanna turn on, idk why... it was around 80 percent battery and it wont turn on! i tryed connecting it to my wall, and nothing then i tryed to connect it to itunes, and nothing comes out, its already installed to my laptop but when i connect it, it wont turn on or open itunes please help!

Connect to Wall Charger again and Reset, hold both home and power buttons for about 20 seconds until the iPhone begins to start.

Macbook Pro Keeps Restarting Itself and then totally crashed

Dear all.
I am using Macbook Pro 13-inch (i7 2.9 Ghz, 8 GB DDR3, 750 GB) with OS X Maverick (10.9.4).
For the last few months, my Macbook Pro kept restarting itself and I usually ignored this issue until yesterday, my MBP fail to boot up, only display the grey apple logo and rolling icon below for almost 30 mins.
I tried the safe mode and reset NVRAM method and it still fail to boot up and sometimes a black text appears (aka kernel panic).
Then i took my macbook pro to the nearest Apple service provider and the technician said that it was probably due to the 750 GB Hard Disk since the HD itself is a faulty product, therefore we can't find any 750 GB HD nowadays. So he recommended me to replace my current HD with a new HD. I took his advice and I replaced it with 1 TB Toshiba HD. And then the technician reformat my MBP and installed the OS X Maverick. My Macbook pro able to boot up now.
However the next day I still find my MBP keeps restarting itself (until now) and take note that I didn't install any new softwares, I only updated the available updates in Apps Store for the OS, iBooks, and iTunes.
Can anyone recommend me what to do? Is this a Hardware problem or software problem?
I'm thinking to switch back to OS Lion to see whether this is mainly due to OS Maverick.
Thank you.

Unfortunately yes. Since the computer is unable to boot up, that part of the software starts BEFORE the OS would. Last time I had this problem, it turned out to be a faulty GPU (soldered to the logic board) and i needed to replace the logic board. If you wanted to, you could indeed back up your personal data (you should ANYWAY, no matter what you do) and you could try to do a fresh install, but I'm fairly confident you are experiencing either faulty ram, or a faulty logic board.

My iphone turned off yesteday by itself and it wont turn back on today. can anyone help me on this problem?

my iphonee turned of yesterday and it wont turn back on and it was fully charged too

sounds like it has frozen, try holding the power button and home button at the same time for around 15seconds until the apple symbol shows on the screen,
hope this works for you

Iphone 4 turns off randomly and won't turn back on unless it's plugged in

Iphone 4 turns off randomly and won't turn back on unless it's plugged in.
Has anyone had this problem?
If I leave the phone (thus not doing anything to it) for an extended period of time say 2 hrs. It will have turned off and you can't turn it back on unless you plug it in, but it's got heaps of "Battery" left.
Ever so often it will turn off randomly as well, and can't turn it on again.

If your iPhone is powering off, this is not normal.
Try restoring your iPhone with iTunes as a new iPhone or not from your iPhone's backup. If no change after doing so, your iPhone has a hardware problem. The iPhone includes a one year warranty.

Iphone 4 turns off randomly and unable to turn it on without charger

iphone 4 turns off randomly and unable to turn it on without connecting to charger or PC

Hey Tiffy6996!
I have an article here for you that describes this issue and can help you troubleshoot the issue a little further:
iPhone: Hardware troubleshooting
http://support.apple.com/kb/ts2802
Will not turn on, will not turn on unless connected to power, or unexpected power off
Verify that the Sleep/Wake button functions. If it does not function, inspect it for signs of damage. If the button is damaged or is not functioning when pressed, seek service.
Check if a Liquid Contact Indicator (LCI) is activated or there are signs of corrosion. Learn about LCIsand corrosion.
Connect the iPhone to the iPhone's USB power adapter and let it charge for at least ten minutes.
After at least 30 minutes, if:
The home screen appears: The iPhone should be working. Update to the latest version of iOS if necessary. Continue charging it until it is completely charged and you see this battery icon in the upper-right corner of the screen . Then unplug the phone from power. If it immediately turns off, seek service.
The low-battery image appears, even after the phone has charged for at least 20 minutes: See "iPhone displays the low-battery image and is unresponsive" symptom in this article.
Something other than the Home screen or Low Battery image appears, continue with this article for further troubleshooting steps.
If the iPhone did not turn on, reset it while connected to the iPhone USB power adapter.
If the display turns on, go to step 4.
If the display remains black, go to next step.
Connect the iPhone to a computer and open iTunes. If iTunes recognizes the iPhone and indicates that it is in recovery mode, attempt to restore the iPhone. If the iPhone doesn't appear in iTunes or if you have difficulties in restoring the iPhone, see this article for further assistance.
If restoring the iPhone resolved the issue, go to step 4. If restoring the iPhone did not solve the issue, seek service.
Thanks for coming to the Apple Support Communities!
Cheers,
Braden

So i got a beats pill and ive been using it for like a month now and the next day i go to turn it on and it wont turn on. so i left it to charge for like 12 hours and still nothing help please:(

So i got a beats pill and ive been using it for like a month now and the next day i go to turn it on and it wont turn on. so i left it to charge for like 12 hours and still nothing help

Ask the manufacturer... That's not an Apple product.

When i plugged in my ipod charger into my macbook pro it off instantly and wouldnt turn back on, also the charger displays a dim green light when connected to the mac. Does anyone have a sollution to this problem?

When i plugged in my ipod charger into my macbook pro it turned off instantly and wouldnt turn back on, also the charger displays a dim green light when connected to the mac. Does anyone have a sollution to this problem?

The dim green light appears to be flashing orange too

My macbook pro restarts by itself and says that there was a problem.

My macbook pro 13" restarts itself from time to time saying that was a problem and needed to restart. What is happening?
This appears after restarting:
Anonymous UUID:
4B41DB91-293C-A855-96C3-771F6F8DA10C
Wed Jan 8 13:28:11 2014
panic(cpu 0 caller 0xffffff80300dc19e): Kernel trap at 0xffffff7fb152f44e, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0x000000680000153b, CR3: 0x0000000032766000, CR4: 0x00000000001606e0
RAX: 0x0000006800001413, RBX: 0xffffff809ada6000, RCX: 0x0000000000000007, RDX: 0xffffff803bf97400
RSP: 0xffffff80af75bb10, RBP: 0xffffff80af75bb20, RSI: 0x00000000e0000010, RDI: 0xffffff803ccc1a00
R8: 0x0000000000000000, R9: 0x0000000000000000, R10: 0x0000000000000010, R11: 0x0000000000000000
R12: 0xffffff803bab4ec0, R13: 0x00000000e0000010, R14: 0x0000000000000007, R15: 0xffffff803bf97400
RFL: 0x0000000000010286, RIP: 0xffffff7fb152f44e, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x000000680000153b, Error code: 0x0000000000000000, Fault CPU: 0x0
Backtrace (CPU 0), Frame : Return Address
0xffffff80af75b7a0 : 0xffffff8030022f69
0xffffff80af75b820 : 0xffffff80300dc19e
0xffffff80af75b9f0 : 0xffffff80300f3606
0xffffff80af75ba10 : 0xffffff7fb152f44e
0xffffff80af75bb20 : 0xffffff803048f48a
0xffffff80af75bb80 : 0xffffff803048f7a3
0xffffff80af75bba0 : 0xffffff803048a969
0xffffff80af75bbe0 : 0xffffff803048f5f2
0xffffff80af75bc10 : 0xffffff803048f769
0xffffff80af75bc50 : 0xffffff80304912c2
0xffffff80af75bca0 : 0xffffff80304ac9ae
0xffffff80af75bce0 : 0xffffff80304909bf
0xffffff80af75bd60 : 0xffffff8030490477
0xffffff80af75bda0 : 0xffffff803049020a
0xffffff80af75be00 : 0xffffff80304917dc
0xffffff80af75be10 : 0xffffff7fb093272a
0xffffff80af75be30 : 0xffffff7fb0cb5b46
0xffffff80af75be70 : 0xffffff7fb0cb981f
0xffffff80af75bea0 : 0xffffff7fb0cb9cbf
0xffffff80af75bf00 : 0xffffff7fb0cb4bdf
0xffffff80af75bf20 : 0xffffff803004a15a
0xffffff80af75bfb0 : 0xffffff80300d6aa7
Kernel Extensions in backtrace:
com.apple.iokit.IOUSBFamily(650.4.4)[972D3024-AF9C-3E09-A9EC-D9AB2A559B38]@0xfff fff7fb091e000->0xffffff7fb097cfff
dependency: com.apple.iokit.IOPCIFamily(2.8)[447B4896-16FF-3616-95A2-1C516B2A1498]@0xffffff 7fb06ba000
com.apple.driver.AppleUSBHub(650.4.4)[1229941E-4CB9-3F57-B0A6-4A0AD595025D]@0xff ffff7fb0ca9000->0xffffff7fb0cbffff
dependency: com.apple.iokit.IOUSBFamily(650.4.4)[972D3024-AF9C-3E09-A9EC-D9AB2A559B38]@0xff ffff7fb091e000
com.huawei.driver.HuaweiDataCardACMData(4.27)[00000000-0000-0000-0000-0000000000 00]@0xffffff7fb152d000->0xffffff7fb1534fff
dependency: com.apple.iokit.IOUSBFamily(650.4.4)[972D3024-AF9C-3E09-A9EC-D9AB2A559B38]@0xff ffff7fb091e000
dependency: com.apple.iokit.IOSerialFamily(10.0.7)[69BF9F85-1A4A-3616-B7D1-E43F3AABCB13]@0x ffffff7fb0dee000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
13B42
Kernel version:
Darwin Kernel Version 13.0.0: Thu Sep 19 22:22:27 PDT 2013; root:xnu-2422.1.72~6/RELEASE_X86_64
Kernel UUID: 1D9369E3-D0A5-31B6-8D16-BFFBBB390393
Kernel slide:
0x000000002fe00000
Kernel text base: 0xffffff8030000000
System model name: MacBookPro9,2 (Mac-6F01561E16C75D06)
System uptime in nanoseconds: 4849171103854
last loaded kext at 844096703940: com.apple.nke.ppp
1.9 (addr 0xffffff7fb2031000, size 49152)
last unloaded kext at 329795265587: com.apple.filesystems.msdosfs
1.9 (addr 0xffffff7fb2031000, size 57344)
loaded kexts:
com.avira.kext.FileAccessControl
1.0.0d1
com.huawei.driver.HuaweiDataCardACMData
4.27.00
com.apple.driver.AudioAUUC
1.60
com.apple.driver.X86PlatformShim
1.0.0
com.apple.driver.AGPM
100.14.11
com.apple.filesystems.autofs
3.0
com.apple.driver.AppleMikeyHIDDriver
124
com.apple.driver.AppleHDA
2.5.3fc1
com.apple.driver.AppleMikeyDriver
2.5.3fc1
com.apple.driver.AppleUpstreamUserClient
3.5.13
com.apple.driver.AppleThunderboltIP
1.0.10
com.apple.driver.AppleBacklight
170.3.5
com.apple.driver.AppleMCCSControl
1.1.12
com.apple.driver.AppleIntelHD4000Graphics
8.1.8
com.apple.driver.AppleIntelFramebufferCapri
8.1.8
com.apple.driver.AppleSMCPDRC
1.0.0
com.apple.driver.AppleSMCLMU
2.0.4d1
com.apple.iokit.IOUserEthernet
1.0.0d1
com.apple.iokit.IOBluetoothSerialManager
4.2.0f6
com.apple.Dont_Steal_Mac_OS_X
7.0.0
com.apple.driver.AppleHWAccess
1
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport
4.2.0f6
com.apple.driver.AppleLPC
1.7.0
com.apple.driver.SMCMotionSensor
3.0.4d1
com.apple.driver.AppleUSBTCButtons
240.2
com.apple.driver.AppleIRController
325.7
com.apple.driver.AppleUSBTCKeyboard
240.2
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless
1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib
1.0.0d1
com.apple.BootCache
35
com.apple.iokit.SCSITaskUserClient
3.6.0
com.apple.driver.XsanFilter
404
com.apple.iokit.IOAHCIBlockStorage
2.4.0
com.apple.driver.AppleUSBHub
650.4.4
com.apple.driver.AppleSDXC
1.4.0
com.apple.driver.AirPort.Brcm4331
700.20.22
com.apple.driver.AppleAHCIPort
2.9.5
com.apple.driver.AppleFWOHCI
4.9.9
com.apple.iokit.AppleBCM5701Ethernet
3.6.9b9
com.apple.driver.AppleUSBEHCI
650.4.1
com.apple.driver.AppleUSBXHCI
650.4.3
com.apple.driver.AppleSmartBatteryManager
161.0.0
com.apple.driver.AppleRTC
2.0
com.apple.driver.AppleACPIButtons
2.0
com.apple.driver.AppleHPET
1.8
com.apple.driver.AppleSMBIOS
2.0
com.apple.driver.AppleACPIEC
2.0
com.apple.driver.AppleAPIC
1.7
com.apple.driver.AppleIntelCPUPowerManagementClient
216.0.0
com.apple.nke.applicationfirewall
153
com.apple.security.quarantine
3
com.apple.driver.AppleIntelCPUPowerManagement
216.0.0
com.apple.nke.ppp
1.9
com.apple.kext.triggers
1.0
com.apple.driver.DspFuncLib
2.5.3fc1
com.apple.vecLib.kext
1.0.0
com.apple.iokit.IOAudioFamily
1.9.4fc11
com.apple.kext.OSvKernDSPLib
1.14
com.apple.iokit.IOFireWireIP
2.2.5
com.apple.driver.AppleSMBusPCI
1.0.12d1
com.apple.driver.X86PlatformPlugin
1.0.0
com.apple.driver.AppleSMBusController
1.0.11d1
com.apple.iokit.IOAcceleratorFamily2
98.7.1
com.apple.AppleGraphicsDeviceControl
3.4.12
com.apple.iokit.IOSurface
91
com.apple.iokit.IOBluetoothFamily
4.2.0f6
com.apple.iokit.IOSerialFamily
10.0.7
com.apple.driver.AppleBacklightExpert
1.0.4
com.apple.iokit.IONDRVSupport
2.3.6
com.apple.iokit.IOBluetoothHostControllerUSBTransport
4.2.0f6
com.apple.driver.AppleHDAController
2.5.3fc1
com.apple.iokit.IOGraphicsFamily
2.3.6
com.apple.iokit.IOHDAFamily
2.5.3fc1
com.apple.driver.IOPlatformPluginFamily
5.5.1d27
com.apple.driver.AppleSMC
3.1.6d1
com.apple.iokit.IOSCSIBlockCommandsDevice
3.6.0
com.apple.driver.AppleUSBMultitouch
240.6
com.apple.iokit.IOUSBHIDDriver
650.4.4
com.apple.iokit.IOUSBMassStorageClass
3.6.0
com.apple.driver.AppleThunderboltDPInAdapter
2.5.0
com.apple.driver.AppleThunderboltDPAdapterFamily
2.5.0
com.apple.driver.AppleThunderboltPCIDownAdapter
1.4.0
com.apple.driver.AppleUSBMergeNub
650.4.0
com.apple.driver.AppleUSBComposite
650.4.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice
3.6.0
com.apple.iokit.IOBDStorageFamily
1.7
com.apple.iokit.IODVDStorageFamily
1.7.1
com.apple.iokit.IOCDStorageFamily
1.7.1
com.apple.iokit.IOAHCISerialATAPI
2.6.0
com.apple.iokit.IOSCSIArchitectureModelFamily
3.6.0
com.apple.driver.AppleThunderboltNHI
1.9.2
com.apple.iokit.IOThunderboltFamily
2.8.5
com.apple.iokit.IOUSBUserClient
650.4.4
com.apple.iokit.IO80211Family
600.34
com.apple.iokit.IOAHCIFamily
2.6.0
com.apple.iokit.IOFireWireFamily
4.5.5
com.apple.iokit.IOEthernetAVBController
1.0.3b3
com.apple.driver.mDNSOffloadUserClient
1.0.1b4
com.apple.iokit.IONetworkingFamily
3.2
com.apple.iokit.IOUSBFamily
650.4.4
com.apple.driver.AppleEFINVRAM
2.0
com.apple.driver.AppleEFIRuntime
2.0
com.apple.iokit.IOHIDFamily
2.0.0
com.apple.iokit.IOSMBusFamily
1.1
com.apple.security.sandbox
278.10
com.apple.kext.AppleMatch
1.0.0d1
com.apple.security.TMSafetyNet
7
com.apple.driver.AppleKeyStore
2
com.apple.driver.DiskImages
371.1
com.apple.iokit.IOStorageFamily
1.9
com.apple.iokit.IOReportFamily
21
com.apple.driver.AppleFDEKeyStore
28.30
com.apple.driver.AppleACPIPlatform
2.0
com.apple.iokit.IOPCIFamily
2.8
com.apple.iokit.IOACPIFamily
1.4
com.apple.kec.corecrypto
1.0
com.apple.kec.pthread
1
Model: MacBookPro9,2, BootROM MBP91.00D3.B08, 2 processors, Intel Core i5, 2.5 GHz, 4 GB, SMC 2.2f44
Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In, 1024 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1600 MHz, 0x802C, 0x384A54463235363634485A2D3147364D3120
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1600 MHz, 0x802C, 0x384A54463235363634485A2D3147364D3120
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF5), Broadcom BCM43xx 1.0 (5.106.98.100.22)
Bluetooth: Version 4.2.0f6 12982, 3 services, 15 devices, 1 incoming serial ports
Serial ATA Device: APPLE HDD HTS547550A9E384, 500.11 GB
Serial ATA Device: MATSHITADVD-R UJ-8A8
USB Device: Hub
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: Hub
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: IR Receiver
USB Device: Apple Internal Keyboard / Trackpad
USB Device: HUAWEI Mobile
Thunderbolt Bus: MacBook Pro, Apple Inc., 25.1

Uninstall Avira. It's garbage that will do nothing but burden your system with many needless processes. Avira "detected security issues" on a brand new Mac containing nothing other than one minimally configured User account and what it came with from Apple.
Use its uninstaller, included in Utilities.

Help! My iPhone 4 just turned off suddenly and I cannot turn it back on.

I had just gotten off the phone and everything was working fine, then my phone turned off suddenly and it will not turn back on. My iPhone 4 is up-to-date with the latest software update, and it should have still been charged. I have tried to hold the power button and the Home button, but nothing is happening... Help! I need my phone!

helooo....i have a iphone 4...suddenly phone turned off and wont turn on.....done with ur suggention but didnt work...please seggest me another way to turn on my phone...????

Wifi turns off itself and can't be turned on back except restart when I press the bottom of macbook pro

When i use macbook pro in the bed，my hands usually support the bottom of macbook , which usually causes my wifi turns off. I removed the bottom case of macbook pro，and found the wifi card connector is in the centre of bottom just where my hands usually support. I turned on macbook pro to test and found once I pressed the connector the wifi would be off and never be turned on until restart system，same as the result when I unplugged the connector from interface
and plug it back in. So that is the cause of the problem! Does normal wifi card really should have to be turned on back by reboot when I replug connector? Why just pressing the connector makes wifi card disconnect from the notebook. How can I fixed it? It never happened before.

Thanks, but the problem is more complicated I guess. I just had the same problem, but now my MacBook Pro was completely frozen .... I couldn't do anything any more besides restarting.
After the restart, the Aiport doesn't come up again - ergo: the symbol on top of my MacBook is shows that the Aiport hasn't been installed: when I click on this symbol there is a text which says:'There is no Aiport card installed!'. So the system doesn't seem to find the Aiport card. When I use the 'Systemprofile' under the Apple and select Network > Aiport-card I can read 'no information has been found'.
I don't get it .... is this a hardware or a software problem?

What do you do when your macbook turns off by itself and then wont turn back on?

It's a macbook from 2010. Even if it is connected to a power source it shuts off.

Try this:
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.
These directions are from: http://support.apple.com/kb/ht3964

My Mid 2010 MacBook Pro wifi keeps disconnecting, and doesn't turn back on. Help.

*Mountain Lion 10.8.2*
Here's what's happening:
I'll be browsing the internet probably surfing reddit (because what else do college kids do right?) and I'll click one of the links I'm interested in:
The page won't load at all, as if I have NO internet connection.
Click the wifi icon in the status bar. Before several networks (not just my current network) would show up. Now ONLY the network I'm currently connected to shows up.
Turn off the wifi to try to "refresh" it.
Turn Wifi back on. Now it will say "Searching for network" and show that I'm connected to a network, but the bars never fill the status bar icon. If I go to System Preferences > Network and try to turn on the wifi there it lets me click the button, but nothing happens.
Get frustrated that the wifi WILL NOT TURN BACK ON and restart computer
Start browsing the internet again or doing whatever college students do on the internet until it disconnects again.
See 1
What I've done to try to aleviate this:
Made a genius bar apointment. I'm out of warrenty, but he did confirm for me that my wifi card is working as expected, and it's not a hardware issue, but more than probable a software issue. He did some cool trick where he went to Library>Preferences>System Configurations and deleted the entire contents (I think this is where the network information is stored according to some of the plists I looked through) then restarted the machine and everything seemed to work ok for a while, but the problem came back. I actually still do this sometimes when it happens but results seem to be the same every time (Plus I have to re enter network information when I do this).
Genius bar guy suggested that I try reinstalling Mountain Lion. Didn't want to get rid of my data, so I just did an install over my current build. This took some time, but it seemed to work for a while, but alas the problem came back.
Genius bar guy suggested (as a last resort) a fresh install. So That's what I did. I backed up my computer (Really I just coppied my documents folder and music folder to an external. I did not use a time machine back up because "ain't nobody got time for dat") and I then formatted my hard drive (Which is an SSD if that may have anything to do with anything), and installed mountain lion again. For a while things seemed good, but the problem came back.
For clarification:
It has happened on multiple networks, not just the same network.
On top of that, every time it happens I have other devices connected to the same network and they work fine.
It has not always happened, this recently started about 2 weeks ago.
I have not recently installed any software that could have possibley done this (I use mostly MAS store stuff with the exception of Bartender, TotalFinder, and xQuarts, but all 3 of those had long been installed before I had to format my machine)
I can't really force the problem, but it seems to happen sometimes after the machine falls asleep, but I know for a fact it's also happened mid use (as described above)
Can anyone give me any kind of clue as to what is happening, why, and how I can fix it?

Years of fine internet use via WIFI then randomly it starts dropping then one day (weeks later) it is no longer accessible at all and even saying "No hardware installed" when I click on WIFI icon at the top right on screen. Here is how I finally fixed it!:
For six months I wallowed in this problem and had to connect my macbook pro to the internet via ethernet cable which as you can image was very restrictive :/
I have had numerous laptop technicans befuddled by this WIFI problem and most concluding with how my WIFI card must be broken and that I will need to buy a new one. The last suggestion I had on the matter was to buy a USB wifi dongle.
So I ended up buying this one, http://www.asus.com/nz/Networking/USBN10_NANO/Unfortunately my macbook pro didn't want to read the install disc and it didn't autorun so it didn't work. After reading more forums I saw that you could download the program from the net and sure enough it worked.. BUT STRANGER when I took the USB dongle out the WIFI was still working!! The program appears to have reminded my four year old macbook pro that it is indeed WIFI capable.
So to find this miraculous program its located herehttp://www.asus.com/nz/Networking/USBN10_NANO/HelpDesk_Download/
Same link as above just under SUPPORT>Driver&Tools
You then click on a file when its downloaded and a file called MAC will appear, then click on install. Within 5 minutes you should have your WIFI back. My macbook pro crashed again today but without having to get the shortest ethernet cable you've ever seen out again - I was able to install the program again and WIFI was up and running once more. Moral of the story - didn't need to spend any money to fix this and not even using the USB dongle.
So happy!! Hope it works for you too!
This also worked on a MacBook that lost its WIFI when a user accounts password was changed and the keychain password wasn't known to them - another random way to lose WIFI apparently

My MacBook suddenly turned off. And won't turn on

My MacBook suddenly turned off. There was a click sound and then nothing. I have tried to restart it but nothing happens. No sound no lights. It is plugged in and the power cord shows green. I have not damaged it in any way.....

Here is what to do;
1. Unplug everything from your computer.
2. Take off the bottom of your MacBook / Pro / Air. (There are usually 3 screws that are longer than the rest near the vent, remember where they go.)
3. Carefully unplug the battery from the logic board.
4. Wait 10 seconds.
5. Plug the battery back into the logic board.
6. Put the bottom cover back on.
7. Reboot the computer holding the "Option" key.
I posted this originally here. Re: My Mac randomly just turned off and now it wont turn back on, the charger light is faintly flashing green and amber?!?!

My iPhone4 power turn off itself and cannot turn on again.

power turn off forever

See Here for > Frozen or unresponsive iPhone
Try this First... No Data will be Lost..
Press and Hold the Sleep/Wake Button and the Home Button at the Same Time...
Wait for the Apple logo to Appear...
Usually takes about 15 - 20 Seconds... ( But can take Longer...)
Release the Buttons...

My macbook pro turn off itself and it wont turn on

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