My MacBook pro will no longer connect to a wireless network that I've been connecting to automatically for months and I'm not given the opportunity to re-enter the password.

I am trying to connect to a wireless network that I have connect to automatically for over a year. When I try to connect I simply get the following message: "the wifi network xxxx could not be joined". I have moved closer to the router as suggested and I have attempted to run diagnostics without luck, I have rebooted, I have toggled the wifi on and off. I'm at a loss now...
My MacBook Pro system is running OSX 10.9.5, 2.9 GHz Intel Core 17 processor, 8GB 16000MHz DDR3 memory.

Try resetting the SMC and PRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
About NVRAM and PRAM
Try another cable

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My Macbook Pro will no longer connect to my tv via HDMI

Well basically it is in the title, my Macbook Pro will no longer connect to my tv via HDMI.
I have been using this cable for a long time and works perfectly.
earlier today i used it to connect my mac up to my parents 4k tv, it worked fine, did what i wanted to do.
but now when I've come to connect it up to my tv it recognises there is something connected but it won't display anything
it just says no signal on my tv
im not sure whether my mac has changed some settings on its own to run on 4k but now to high to run on my 1080p tv
pretty annoying so any ideas id be very grateful.
I've already tried
restarting my mac
turning tv on and off
different hdmi ports
thank you

Try resetting the SMC and PRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
About NVRAM and PRAM
Try another cable

10.6.4 Macbook Pro will no longer connect to Apple bluetooth keyboard/mouse

I installed the 10.6.4 update and my MacBook Pro 17" froze after a while. I rebooted and now the bluetooth will not connect or my Apple wireless keyboard or Mighty Mouse. I can also no longer turn the bluetooth off.
Anyone else having problems?

Same thing happened to me. I had the same problem updating from 10.6.2 to 10.6.3 also.
I was able to fix it again (in the update from 10.6.3 to 10.6.4) using the same approach:
Look in both /Library/Preferences (the library folder at the root level of your hard drive) and ~/Library/Preferences (the library folder inside your user folder). Delete the file com.apple.Bluetooth.plist from both locations then shut down the computer fully before restarting.
It is important to click shut down (and not just restart). I don't know why, but it won't work if you just click restart.
Source for this solution: http://appletoolbox.com/2010/04/mac-os-x-10-6-3-no-bluetooth-after-update/

Macbook Pro will no longer connect to my network automatically

My network used to connect automatically and now I have to manually connect. In Network Connections it doesn't show to be set up any longer so I set it up again but it will not save it after I shut down. Any ideas? Thanks!

Try loging into your router settings and just change the name of your network. That usually works for me.

MacBook Pro will no longer access the internet

We have two macs: A MacBook Pro (2.53 GHz Intel Core Due) and a MacBook (2.4 GHz Intel Core 2 Duo). Both are running Snow Leopard 10.6.8.
Problem: the MacBook Pro will no longer connect to the internet. Network Diagnostics thinks that it is connected. I can use Network Utilitities to ping a site. But Apple Mail, iCal, Safari, Firefox, Chrome, Skype, Software Update, etc., cannot access the internet.
The MacBook Pro is set up with a single user account.
Our internet is provided through a mobile phone provider. If I set up our smart phone to serve as a wireless hotspot, the MacBook, iPod Touch, iPad will all connect. The MacBook Pro will not. If I put the SIM card in a USB modem and connect the modem to the MacBook Pro, the modem software will connect to the internet. If I turn on Internet Sharing on the MacBook Pro, the MacBook, etc., will connect through the MacBook Pro, but the MacBook Pro itself will not.
So to sum up: the modem software connects to the internet, Internet Sharing works as it should, Network Diagnostics and Network Utilities can't see a problem, and yet none of the apps that NEED to access the internet are able to.
This is the error message that Safari gives:
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This is the error message that Chrome gives:
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I have tried going to System Preferences / Network and deleting Airport and then adding it back. I've tried disabling the Firewall. And the same with reboots after each.
We're from the States but currently our work has us in Africa. To keep from inadvertantly passing on windows viruses to others (viruses are rampant in Africa), I'm running the Intego anti-virus software on both machines (VirusBarrier X6). I mention this because the problem started after rebooting after an update for that software. (The MacBook Pro has had the update, the MacBook has not.) But I also used Time Machine in an attempt to roll back VirusBarrier X6 to its pre-update status. That didn't solve the problem either, which makes be think that the Intego problem didn't cause the problem. But I mention it to be thorough.
There is an Apple-certified service centre in country, but it's a long drive away that I'd rather not have to make. As it would for any of you in this day and age, this is really hampering my work. Any and all help is much appreciated.

THE FIX
After hours (days actually) troubleshoorting, involving 4 people and Apple Support folks, I'll save you time. If you have VirusBarrier-follow the Manual to uninstall. use Intego's uninstall and deauthorize Virusbarrier before you trash it. If you have Net Nanny, trash it.
None of the above-it is Foxcomm's Airport/Bluetooth (661-5867) card. Faulty, non existent, blown a transistor, are all comments from Techn Support reps (the Genuis blue shirt reps)
Take it into an Apple Store, have them check the Airport card (and only the airport card) using " a different operating system". Sorry that is a black hole, as the machine disappeared to the back of the store for"testing. Don't re-install the OS, delete plist files or applications, reconf and spend hours wasting your time.
Virusbarrier, net nanny or a faulty Airport card. In warranty it is covered; out of warranty:70.55 plus $39 to have Apple officially loosen the screws.I have a late 2011 MacBook Pro, can't speak for older models.
Hope this helps the community.

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I just purchased a new Linksys E2500 router. It will connect to all my other devices, but does not recognize the password when sent from the PowerBook G4.

I just purchased a new Linksys E2500 router. It will connect to all my other devices, but does not recognize the password when sent from the PowerBook G4. When I try it responds that the password is invalid. I have connected my MacBook Pro, iPad and iPod Touch with the same password.

Charles Swigart wrote:
It will connect to all my other devices, but does not recognize the password when sent from the PowerBook G4.
Try putting $ (a dollar sign) in front of the password.

How do i reset my mac completely? I have parental controls and cant seem to get to time machine cause i bought the computer with parental controls on it and they did not have the password. How do i completely reset my macbook pro?

how do i reset my mac completely? I have parental controls and cant seem to get to time machine cause i bought the computer with parental controls on it and they did not have the password. How do i completely reset my macbook pro?

If you have a rescue email address (which is not the same thing as an alternate email address) on your account then the steps on this page will give you a reset link on your account : http://support.apple.com/kb/HT6170
If you don't have a rescue email address (you won't be able to add one until you can answer your questions) then you will need to contact Support in your country to get the questions reset.
Contacting Apple about account security : http://support.apple.com/kb/HT5699
When they've been reset (and if you don't already have a rescue email address) you can then use the steps on this page to add a rescue email address for potential future use : http://support.apple.com/kb/HT5620
Or, if it's available in your country, you could change to 2-step verification : http://support.apple.com/kb/HT5570

So my iphoto is set up with a different apple account from my current one... the email on the old account is out of date and i do not know the password for it. my copmuter will not let me update my iPhoto nor will my old email account allow me to accessit

so my iphoto is set up with a different apple account from my current one... the email on the old account is out of date and i do not know the password for it. my copmuter will not let me update my iPhoto nor will my old email account allow me to accessit

Did you try this Apple website regarding your old Apple ID and its password: Apple ID: If you forget your password
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Macbook pro will no longer boot from main sata bay after Yosemite

Hi!
I am really stuck as to why my macbook pro will no boot from the main Sata bay.
I have the macbook pro late 2011 - a few months ago I installed a samsung 840 evo, and moved the 500gb hdd into the optical bay and all has been working perfectly until last night.
I installed yosemite two days ago and it worked perfectly to begin with... then when I re opened my laptop everything was frozen. I restarted it and it wouldnt get past the grey screen. Then I managed to get it to the internet recovery stage....however it would not recognise the SSD, so I had to install Lion on the HDD.
After I logged on it gave me the message saying that the disc is not readable and on disk utility I can only see the "samsung ssd" but no details about it.
I thought that the SSD may have gone, but when i removed it and plugged it in via USB I was able to boot from it with no issues.
Does anyone know if this has anything to do with the new OS? or whether it is the Sata cable?
Thanks for any help!!!

Hi, I have been having the exact same problem with a late 2011 MBP 15 inch. I replaced the hard drive with a samsung SSD 1.5 years ago, along with a samsung SSD in the optical drive. It worked great until the Yosemite upgrade. The MBP seemed to work reasonably well for a few days after the upgrade, but then it started stalling on various programs (spinning beach ball on Mail, Safari, etc). Start-ups were also longer and had a loading bar each time, which was new since the upgrade. I left the MBP to sleep last night and when opening it, it crashed and tried to restart. On restart it loads to the login screen, then after I enter the password it partially loads (based on the loading bar), then shuts off. I removed the SSD and plugged it in with a USG, but that didn't change anything. Here is a picture after using CMD-V before it shuts off.

MacBook Pro will no longer recognize new SSD via USB

I just received a brand-new 512 GB Samsung 840 Pro SSD from Newegg this morning.
I own a 15-inch MacBook Pro (Mid-2012) with 16 GB of RAM and a 2.3 GHz Core i7 running Mavericks (10.9.1).
Earlier today, I plugged in the SSD via a third-party USB-to-SATA adapter that I also purchased from Newegg at about the same time. The machine recognized the new drive, and I opened up Disk Utility to format the drive as Mac OS Extended (Journaled).
Once that finished, I used Carbon Copy Cloner to clone my existing HDD to the SSD. Before it began, the program asked me to create the Recovery HD, so I enabled that option. The rest of the process proceeded smoothly. I quit CCC, ejected the drive, and put it away for the rest of the workday.
When I arrived home tonight, I plugged the SSD back into the Mac in hopes of test-booting it externally. Unfortunately, the machine will no longer recognize that anything is plugged into the Mac. I find it highly unlikely that the USB adapter could be malfunctioning; I unboxed it this morning and it's been mere hours since the successful clone attempt. I also find it hard to believe that the SSD could be broken, either.
I tried to disable rEFIt and manually invoke the boot selection screen, but even when that happens, the drive fails to mount. For the same reason, I can't erase the drive to start over, either. I've tried both USB ports, as well as rebooting with the SSD connected and unconnected.
My research tells me that people often have problems trying to get SSDs to boot when they've been installed in the drive bay, but nothing I've seen suggests anyone's had a problem booting from the external SSD after a successful clone attempt. What am I missing?

I'd start by resetting the SMC. Follow the method for "a battery you should not remove yourself."
http://support.apple.com/kb/ht3964
I have no experience with Samsung SSD's, but I've read a number of posts here of people having problems with some of them. That could be a possibility.
The other thing you could try at this point is to swap the drives. If it's cloned already and the drive is good, it should boot. That would indicate the enclosure failed after the copy.

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Macbook Pro can no longer connect to any wirless connection

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i forgot to mention, its not even a matter of getting connected to the wireless signal with a few bars showing and not function, it just does not connect at all anymore and i get an error message saying:
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My MacBook pro will no longer connect to a wireless network that I've been connecting to automatically for months and I'm not given the opportunity to re-enter the password.

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