OS X 10.4.10 upgrade - no Internet connection
I just had to upgrade my old Power Mac G4 from os 10.3.9 to 10.4.10 and now my belkin wireless usb adapter no longer finds my wireless network - or any network.
When I open the belkin config page and check the site survey not a single wireless network is visible, and I know several are available in my area.
I haven't changed anything since the upgrade - it was done my a support team due to hardware failure.
So what to do?
Specs:
Belkin wireless usb adapter IEEE 802.11b/11Mbps ver. 1000
PowerPC G4 Mac OS X 10.4.10
I know my network is working - Im using it to post this message from my laptop.
Don't know which model you have, but I downloaded this 10.3 version, (works fine in 10.4.10), for the F5D6050 here...
http://web.belkin.com/support/download/downloaddetails.asp?lang=1&download=1272
Check their site for other Models if yours is.
Similar Messages
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Upgrade without internet connectivity?
I'm bandwidth challenged... I live where I can't get lots of BW but, I have two Apple TVs, three Macs, and three iPods. The iPod Touch wants a 277 MB update, the Macs each want 75 MBs of update, and the two Apple TVs each want an update of unknown size. For the Macs what I do is tote the MBP into town, do the updates and save them to disk and then share them out to the other computers. Is something like this "sneaker net" available on the Apple TV (and ipod?). I just don't have that kind of bandwidth here at home.
Thanks,
KeithThe AppleTVs can only be updated by a direct internet connection.
Can you take one somwhere with a TV and good bandwidth and update there - it doesn't need to be connected to itunes - it fetches the update direct from internet itself.
You can't install the update via iTunes either.
Do you have a friendly Apple store that might oblige?
AC -
Mountain Lion upgrade and Internet connection problems ?
Since I upgraded my Macbook Air, it does not want to connect to my home Internet network anymore. My Ipad, Iphone and tablet PC are all working fine, but to connect to the network I need to restart and even reset my router to be able to connect. Needless to say, I lose connection when it gets into sleep mode and when it is shut down. Anyone having the same problem or a solution ?
I'm having similar problems with a 2012 13" MacBook Air. It's brand new, came installed with Mountain Lion.
I get disconnected from the wireless randomly and the wireless icons turns gray. Like you, I have an iPad, multiple computers and they all work fine.
Instead of restarting the router, I go into Safari and do a network diagnostics and it picks up the connection easily enough.
No solution as of yet, but I posted a topic here if you want to follow it:
http://forums.macrumors.com/showthread.php?p=15435867 -
Just upgraded to Lion an am discovering that I cannot send email photos from within iPhoto. Error message says bad Internet connection or server not working, when that's not the case. Never happened in Snow Leopard! Help!!!
what email service - Yahoo mail have been acting up lately
you can try setting Mail as your email client - it resolves this pfoblem for some people
LN -
I owned an Apple Tv and since I upgrade my internet to higher speed my Apple Tv does not work. Please someone help.
In most scenarios you shouldn't need to forward ports, however if you need to, you may be best contacting your ISP.
As with most router issues, I would recommend that you contact your ISP with details of your problem (assuming that it was your ISP that provided it to you).
There are simply too many manufacturers with different software features and settings and often different names for such features and settings, that the best advice will likely come from those that are knowledgeable about your particular router.
Make sure your router/computer allows access over the following ports
Port
Type
Protocol
Used By
53
TCP/UDP
DNS
DNS
80
TCP
HTTP
AirPlay, iTunes Store
123
TCP/UDP
NTP
Network Time
443
TCP
HTTPS
AirPlay, PhotoStream, iTunes Store
554
TCP/UDP
RTSP
AirPlay
1900
UDP
SSDP
Bonjour
3689
TCP
DAAP
iTunes, AirPlay, HomeSharing
5297
TCP
Bonjour
5298
TCP/UDP
Bonjour
5350
UDP
NAT
Bonjour
5351
UDP
NAT
Bonjour
5353
TCP/UDP
MDNS
Bonjour, AirPlay, HomeSharing
8000-8999
TCP
iTunes Radio Streams
42000-42999
TCP
iTunes Radio Streams
49159
UDP
MDNS (Win)
Bonjour, AirPlay
49163
UDP
MDNS (Win)
Bonjour, AirPlay
The following article(s) may help you.
Troubleshooting Home Sharing
Troubleshooting Wi-Fi networks and connections
Recommended Wi-Fi settings -
Hi
I am experiencing wireless connection problem on 4s after ios 8.1 upgrade. The wireless icon appears showing that it's connected but webpages do not load. I have checked my internet connection with other devices and seems to be alright. what to do?
I have tried reseting the network settings and forgetting my wireless connection and re-connecting to it. I even backed up my phone on itunes and restored it, factory reseted it. Nothing seems to work.
Also after my upgrade to ios 8.1 my personal hotspot option under cellular data has disappeared.
Would you please help me out? I would really appreciate it.Hi..
Restart your router then restart the iPhone to test.
If that doesn't help, try this support article > iOS: Troubleshooting Wi-Fi networks and connections -
After upgrading to Lion my internet connection doesn't work
Hey folks,
MacPro 2010, wired connection through Verizon FiOS, upgraded to Lion (via App Store) back in July, but now my wife says she can't get on the Interent
on her account, even though all connections are good, she has an IP, subnet, DNS are good, the ethernet settings say she is connected, but using Chrome (13.0.782.122) or Safari, just hangs on browser launch. No URL will resolve no matter what site I enter. But when I log out of her account and into mine I can connect using the same Chrome browser just fine.
The only thing I can come up with is Chrome has had issues for quite some time on Snow Leopard and Lion when trying to update. About Chrome will display there is a new version and hitting the Install button will result in a "Update Server not available Error Code: 12". Any workaround by the Chrome Blog was not helpful, and uninstalling and reinstalling the program would sometimes work. But every so often when I would manually check About Chrome it would mysteriously be updated all by itself, and I was fine. Eventually though, every so often I would check and it would say there's a new version and I would get the infamous error. I could never seem to update the program myself. I would have to wait until it did it on its own?
I don't know if fooling around with Chrome's insides (using AppTrap to get rid of Chrome, manually deleting Preferences.js files, etc) corrupted something on my wifes account, which is a limited account and had some Parental Controls enabled - although she had Allow Unrestricted Access to Internet Sites checked off. I DID, however, have the Apps section restricted at some level, and I believe certain Chrome features were blocked ( like google updater), because while logged into her account, chrome would pop up: "you don't have access to GoogleUpdater...etc" and another one named "xml or xmd" something or other, I can't remember exactly so I apologize. But while troubleshooting the no internet issue, I hit "Always Allow" for both messages, put in my password and she still couldn't get on the web, even when I turned off Parental Controls altogether. I couldn't even do a Software Update, it would just not move.
I even opened a Terminal window and Pinged www.google.com and was receiving replys at a steady rate, so I don't know what else to try. Safari is also exhibiting this same behavior, so I'm thinking its a common issue with both browsers since both use Webkit? I could be wrong obviously...
I'm at a loss as to what it could be or what to test out. Any help would be welcomed.
PhilipI had this problem on SL and on Lion as well, and it occures for WiFi and Ethernet connections.
In fact the internet connection was not broken as I could ping the destination usin the IP (not DNS name).
In this case the problem was related to mDNSResponder task which handles all dns queries.
It was the most frequent problem in my day to day work with SL and now Lion. It was never fixed by any patch from Apple. I tried almost all voodoo including fresh install, all possible config changes - no solution.
The only version with no problems related to network was 10.5.8. All the other versions had issues of different kind (WiFi instability (lost signal), DNS problems (for wireless and wired connection) sometimes associated with machine sleep and wake up and sometimes with no reason.
QUESTION: Is your problem independent of the access point / router you connect to.
I must say networking was (and still is) the weakest part, besides the other OS X weaknesses I experienced during 4 years of OS X usage.
No problems in the same network with Linux or Windows beeing ran natively on my iMac So hardware is OK.
Software is of poor quality. Not much more to say in this matter.
I found a very interesting article dated 1996 about programming which I think is still valid.
Link to the article: http://www.fastcompany.com/magazine/06/writestuff.html
Below the fragment (with some connection to Apple)
Software is everything. It also s***s.
"It's like pre-Sumerian civilization," says Brad Cox, who wrote the software for Steve Jobs NeXT computer and is a professor at George Mason University. "The way we build software is in the hunter-gatherer stage." -
I can't get FaceTime or iMessage to connect, I enter valid password (tested and works for Apple account) and it won't connect. I have checked all settings, upgrades iOS to 8.3 rebooted, changed Apple acount PW still wont connect. My internet connection is fine Safari works and I can access all sites. I have an iPad 2. Any help on this will be greatly appreciate. iPad 2, iOS 8.3
This is an ongoing problem as you will see by searching the forum.
Out of curiosity, do you have 2 step verification enabled? It was recently extended to include iMessage & FaceTime & I'm wondering if it might be causing some of the issues that some users are experiencing. -
Even when I am using Safari or Firefox the spinning wheel of lines especially for face book just keeps spinning and it takes forever to load my pages. It was faster than this before I upgraded my internet service. I Check the speeds and those are fine (using a internet speed test). I have emptied all of my caches, cleaned my Mac with (Clean My Mac), I've taken out all old files, pictures, cleared my widgits, and I don't know what else to do. Is there some configuration I need to address some where inmy preferences? Do Ihave to just live with it? I do want to upgrade to Snow Leopard but, I can't afford that at this moment. Any ideas please forward. Another issue I have is that my IMac will not accept a DVD+Rdl but will accept any and all other DVD' and CD's what could cause that?
Sincerely,
Rochichi98A warm welcome to Apple discussions!
A 2003 iMac cannot support Snow Leopard 10.6; you'd need an Intel processor and that cannot be retrofitted to your Mac. What does "About this Mac" in your Apple menu say for your processor speed? What does it say about how much RAM you have?
If the processor is 1ghz or faster, you can run OS 10.5; otherwise, you are maxed out at 10.4.11.
Also, are you running any commercial ("pay for") anti-virus or security software? They are notorious for slowing most Macs to a fraction of their speed potential.
A too-full hard drive can drag down performance, especially if you don't have a lot of physical RAM installed. If you single-click your hard drive icon and then do command i, you'll see the disk usage. Looks like this:
The value for "Used" should be no more than about 90 percent of "Capacity." In the example image, that drive has about 34 percent of its space used and 66 percent free--more than enough. Please post what you see for your Capacity and Used numbers
There are a few more things we might check but this is a good start.
Awaiting your information,
Allan -
HELP ! HELP ! HELP ! "An error has occurred while downloading software for your device. Please verify your internet connection or try again later, if the problem persists." appears while attempting to upgrade or install BlackBerry Device Software. upgrading my Z10 OS to 10.3 on both (link & web). but facing same problem again and again. plz help. internet speed is 1mbps and working fine.
I suggest you try the very clean and very forceful AutoLoader method:
http://supportforums.blackberry.com/t5/BlackBerry-10-OS-Device-Software/Upgrading-OS10-devices-using...
Beware that it is completely destructive...the device will be "like new"...no data, no apps, no accounts, etc. Be sure you take a full backup first, as well as make full manual documentation of all apps, accounts, configurations, etc. Sometimes a restore reintroduces the very corruption one is trying to eliminate, and manual reconfiguration is necessary.
You can also use this to fall back to a prior OS if you desire...you can install any OS level for which you can find an AutoLoader. (Hint...search over on the CB site!)
Good luck and let us know!
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
Join our BBM Channels
BSCF General Channel
PIN: C0001B7B4 Display/Scan Bar Code
Knowledge Base Updates
PIN: C0005A9AA Display/Scan Bar Code -
WiFi Internet connectivity problems after upgrade to 10.8.4
After upgrading to MacOS 10.8.4 I am facing regular interruptions to my WiFi internet connectivity. Periodically the internet connectivity is lost and the only way to fix the problem is to turn WiFi off and on again. This happens frequently when I am downloading files at using big bandwidth (more than 1.5-2 MB/s). If I use assist me on the Network preferences tab, it displays an ISP error when the connectivity is down, however I am certain that I do nota have any kind of ISP or router issue since at the same time I have WiFi internet connectivity from my iPad mini, iPhone 4S and Samsung Galaxy S3. Therefore it should be a 10.8.4 issue
Troubleshooting Wi-Fi issues in OS X
Wireless Connection Problems - Fix
Wireless Connection Problems - Fix (2)
Wireless Connection Problems - Fix (3)
Wireless Connection Problems - Fix (4) -
Loss of internet connectivity after upgrading to windows 8.1
Hi, After upgrading to windows 8.1 from windows 8 i am experiencing major problems , loss of internet connectivity for no reason both I.E. and G/CHROME are now taking an age to open there are no virus issues as far as i can see.
I have uninstalled and re-installed windows 8.1 about four times over the past 9 months or so and the same thing happens after all the updates are in it runs like a dream for say 6weeks or so then i get the same faults as described above then i uninstall/ re-install ok for 6 weeks .
I would apprieate any help or advice thanksHi @BMATH
Thank you your query.
I understand that after updating to Windows 8.1 about every 6 weeks you loose wireless connectivity for no reason and the web pages are very slow to open. If you uninstall and reinstall Windows 8.1 it works fine again for about the same amount of time. You have done this about 4 times with the same result each time.
Do you know if there is any changes at that time , perhaps an update?
You stated you do not believe you have any viruses. Just to be sure here are two links that will help confirm that.
Microsoft Malicious Software Removal Tool
Microsoft Safety Scanner
After updating to Windows 8.1 have you checked for Windows updates?
Have you ran HP Support Assistant ?
Here is a link to Troubleshooting Wireless Network and Internet (Windows 8) that may also help.
If the issue should remain please contact HP support for assistance.
Please call our technical support at 800 474 6836. If you live outside the US/Canada Region, please click the link below to get a support number for your region.
World Wide Phone Support
Best of Luck!
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping! -
Problems with your internet connection after upgrading to iOS 7.1.2
After upgrading to iOS 7.1.2 on my iPad Retina display does not connect to the internet more. Recognizes the Wi-Fi network but can not connect to the internet. The same thing happened to my wife's iPhone 5s, while my had no problems ...
Some things to try first:
1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at
http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
4. Go into your router security settings and change from WEP to WPA with AES.
5. Renew IP Address: (especially if you are drooping internet connection)
• Launch Settings app
• Tap on Wi-Fi
• Tap on the blue arrow of the Wi-Fi network that you connect to from the list
• In the window that opens, tap on the Renew Lease button
6. Potential Quick Fixes When Your iPad Won’t Connect to Your Wifi Network
http://ipadinsight.com/ipad-tips-tricks/potential-quick-fixes-when-your-ipad-won t-connect-to-your-wifi-network/
~~~~~~~~~~~~~~~~~~~~~~~~~
Fix WiFi Issue for iOS 7
http://ipadnerds.com/fix-wifi-issue-ios-7/
iOS 6 Wifi Problems/Fixes
Wi-Fi Fix for iOS 6
https://discussions.apple.com/thread/4823738?tstart=240
How To: Workaround iPad Wi-Fi Issues
http://www.theipadfan.com/workaround-ipad-wifi-issues/
Another Fix For iOS 6 WiFi Problems
http://tabletcrunch.com/2012/10/27/fix-ios-6-wifi-problems-ssid/
Wifi Doesn't Connect After Waking From Sleep - Sometimes increasing screen brightness prevents the failure to reconnect after waking from sleep. According to Apple, “If brightness is at lowest level, increase it by moving the slider to the right and set auto brightness to off.”
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
iPad: Issues connecting to Wi-Fi networks
http://support.apple.com/kb/ts3304
How to Boost Your Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Boost-Your-Wi-Fi-Signal.hmL
Troubleshooting a Weak Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/Troubleshooting-A-Weak-Wi-Fi-Signal.htm
How to Fix a Poor Wi-Fi Signal on Your iPad
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Fix-A-Poor-Wi-Fi-Signal-O n-Your-iPad.htm
iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Connect iPad to Wi-Fi (with troubleshooting info)
http://thehowto.wikidot.com/wifi-connect-ipad
10 Ways to Boost Your Wireless Signal
http://www.pcmag.com/article2/0,2817,2372811,00.asp
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
Some Wi-Fi losses may stem from a problematic interaction between Wi-Fi and cellular data connections. Numerous users have found that turning off Cellular Data in Settings gets their Wi-Fi working again.
You may have many apps open which can possibly cause the slowdown and possibly the loss of wifi. In iOS 4-6 double tap your Home button & at the bottom of the screen you will see the icons of all open apps. Close those you are not using by pressing on an icon until all icons wiggle - then tap the minus sign. For iOS 7 users, there’s an easy way to see which apps are open in order to close them. By double-tapping the home button on your iPhone or iPad, the new multitasking feature in iOS 7 shows full page previews of all your open apps. Simply scroll horizontally to see all your apps, and close the apps with a simple flick towards the top of the screen.
Wi-Fi or Bluetooth settings grayed out or dim
http://support.apple.com/kb/TS1559
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
Cheers, Tom -
Apple programs will not recognize Internet connection after Tiger upgrade
In January, I posted the question below. I wanted to update it, but this site has archived it and will not allow responses. In the hope that I may help someone else, I am repeating my question, now that I have the answer.
===============================================
ORIGINAL PROBLEM
Last week, I upgraded from 10.3.9 to Tiger. Ever since then, I have had trouble using Apple's programs that require internet usage: Safari, iTunes, Software Update, etc. All of these programs think I am not connected to the Internet. But I am; I can use Netscape, Internet Explorer, and other non-Apple programs on the web.
Furthermore, it's not consistent. Sometimes Safari will recognize the connection. I'll be using Safari, looking up websites, when suddenly it will quit connecting, giving me the message, "Cannot connect to the server," no matter what server it is, even apple.com (so I have to use Netscape to access my .Mac and this Support screen).
How can I resolve this?
==============================================
The problem was that my Earthlink Access software was setting a proxy on my connection. Netscape & Firefox worked because they ignore any proxies; the Apple programs (plus Shiira and Internet Explorer) didn't connect because they use the proxies.
Why did it sometimes work? Well, if I first used Safari to go to a secure website of my bank, somehow that opened up the connection and then I could continue to use the Internet and Internet based programs like iTunes and widgets. However, if I tried to use an Internet-based program before going to the secure site, then it wouldn't work.
After months of phone calls and e-mails and sending data packets and all such stuff with Apple Care, they finally stumbled upon this answer: Uncheck the proxy box. And that did it. At first I had to uncheck it every time I started up the computer, but now it stays unchecked and I can use my Apple programs with no trouble.
I just wanted to share this with you in case you also had trouble with Internet connections after upgrading to Tiger, because I did see several other people had this same trouble.
Movable flat-screen iMac G4 Mac OS X (10.4.6) 1.25Ghz processor, 256 MB memory (DDR SDRAM)For the record, could you state each Proxy box you ended up unchecking please? I'll attempt to submit a user tip with credit to you for finding this solution.
-
WiFi self assigned IP and no internet connection after OS & iTunes upgrade
I have two likely related issues that started as a direct result of upgrading to OS X 10.8.5 and/or iTunes 11:
Starting tonight, after upgrading my OS and iTunes I am no longer able to use Home Sharing between my iMac and Apple TV. Apple TV is logged in to my network and Home Sharing is on, on both devices (signed in to the same account), but Apple TV says Home Sharing is not connecting to my iMac. My iPhone 5 is also not showing a Home Sharing connection.
I've restarted both my iMac and Apple TV several times. Logged in and out several times. Turned Home Sharing off/on several times, power cycled and reset my network modem once.
While trouble shooting my Home Sharing connection I noticed that under my Network settings, Wi-Fi is yellow instead of green and reads "Self-Assigned IP... Wi-Fi has the self-assigned IP address xxx.xxx.xxx.xx and will not be able to connect to the Internet.".
When I go back to Apple TV I've found that althought it's connectted to my iMac through WiFi and I can see my purchased movies I can't view them becasue there is no connection to the iTunes Store (no internet coinnection through WiFi). But my actual network connection on my iMac is just fine.
So it seems that my new OS or iTunes upgrade has caused my WiFi to no longer allow an internet connection across teh wireless network.
Can anybody here tell me why that would happen and how can I fix it?
Any help is greatly appreciated,
DavidBack up all data before making any changes.
Step 1
Take all the applicable steps in this support article.
Step 2
If you're running OS X 10.8.4 or later, run Wireless Diagnostics and take the remedial steps suggested in the summary that appears, if any. The program also generates a large file of information about your system, which would be used by Apple Engineering in case of a support incident. Don't post the contents here.
Step 3
If you're not using a wireless keyboard or trackpad, disable Bluetooth by selecting Turn Bluetooth Off from the menu with the Bluetooth icon. If you don't have that menu, open the Bluetooth preference pane in System Preferences and check the box marked Show Bluetooth in menu bar. Test. Continue if you find that Wi-Fi is faster with Bluetooth disabled.
From that same menu, select Open Bluetooth Preferences. If the box labeled Discoverable is checked, uncheck it. Click the Advanced button, and in the sheet that opens, uncheck the top three boxes, if any are checked. Click OK. Enable Bluetooth and test again.
If the application called "Bluetooth Setup Assistant" is running, quit it.
Step 4
This step will erase all your settings in the Network preference pane. Make a note of them before you begin, and recreate them afterwards. It may be helpful to take screenshots of the preference pane.
Triple-click the line below on this page to select it:
/Library/Preferences/SystemConfiguration
Right-click or control-click the highlighted line and select
Services ▹ Reveal
from the contextual menu.* A folder should open with an item named "SystemConfiguration" selected. Move the selected item to the Trash. You may be prompted for your administrator password.
*If you don't see the contextual menu item, copy the selected text to the Clipboard (command-C). In the Finder, select
Go ▹ Go to Folder...
from the menu bar, paste into the box that opens (command-V). You won't see what you pasted because a line break is included. Press return.
Step 5
Reset the System Management Controller.
Step 6
Make a "Genius" appointment at an Apple Store, or go to another authorized service center.
Back up all data on the internal drive(s) before you hand over your computer to anyone. There are ways to back up a computer that isn't fully functional — ask if you need guidance.
If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
*An SSD doesn't need to be zeroed.
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