Every other day, my mac won't start up

every other day, my mac won't start up. my keyboard would light up and i hear the system start but nothing is appearing in the screen. i would have to press the start button until the screen actually shows up.. why does it do that?

Have you just tried repairing with Disk Utility?
Repair the Hard Drive and Permissions - Lion/Mountain Lion
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the 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.
Repair
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 then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu. Select Restart from the Apple menu.

Similar Messages

Why does my itunes crash after start up with an "APPCRASH" error every time i open it?! I have been trying to fix this for weeks but all i can do it re-install it every other day which does nothing!

Why does my itunes crash after start up with an "APPCRASH" error every time i open it?! I have been trying to fix this for weeks but all i can do it re-install it every other day which does nothing! I am desperate to get access to my itunes to get music on my phone and all of this just makes me want me to sell my iphone since there is no other way to add music to my phone. If things go get sorted soon you can say goodbye to my support.

For general advice see Troubleshooting issues with iTunes for Windows updates.
The steps in the second box are a guide to removing everything related to iTunes and then rebuilding it which is often a good starting point unless the symptoms indicate a more specific approach. Review the other boxes and the list of support documents further down the page in case one of them applies.
The further information area has direct links to the current and recent builds in case you have problems downloading, need to revert to an older version or want to try the iTunes for Windows (64-bit - for older video cards) release as a workaround for installation or performance issues, or compatibility with QuickTime or third party software.
Your library should be unaffected by these steps but there are also links to backup and recovery advice should it be needed.
tt2

Mac won't start (Kernel Panics)

Hello,
My mac won't start up. It turns on, gets as far as the spinning circle and apple logo then a dark screen comes down with a Kernel Panic message. This occurred roughly three months ago and I ended up taking the mac into the regent street store where it was fixed under apple care warranty. My care has now run out, and the 90 day repair warranty has expired but the problem is back so obviously hasn't been fixed properly. Is there anything that can be done about this?
Every time I boot up the computer the message appears, I have tried rebooting with the safe option as well as re installing OSX from the original disks. The install completes successfully but upon restart it pops up with the original kernel panic message.
Luckily I have everything backed up so am prepared to try anything to get it running.
Thanks.

Let us know, but since you obviously have another machine, have you tried Target Disk Mode and then Disk Utility?
use TDM to access Disk Utility.
1. Click the First Aid tab.
2. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
3. Select your Mac OS X volume.
4. Click Repair. Disk Utility checks and repairs the disk.
Please post back,

Help! Mac won't start. I hear the ding and see the apple logo but the bar below it never goes further than an inch before the screen goes dark. I have tried unplugging.

Help! Mac won't start. I hear the ding and see the apple logo but the bar below it never goes further than an inch before the screen goes dark. I have tried unplugging.

Hello Templemeads,
Thank you for using Apple Support Communities.
For more information, take a look at:
Troubleshooting: My computer won't turn on
http://support.apple.com/kb/ts1367
Have a nice day,
Mario

I like and use Top Sites but it has become unsuable with this constant blacking out and reloading the thumbnails. My MBP has not seen a problem at all. I have been searching every other day for over a month trying to find a fix in Windows Safari with n

I like and use Top Sites but it has become unsuable with this constant blacking out and reloading the thumbnails. My MBP has not seen a problem at all.
I have been searching every other day for over a month trying to find a fix in Windows Safari with no joy. I want to resolve, not switch browsers. Please offer up a solution that only refreshes the Top Site thumbnails once a day or as some controlable interval. Started about two versions ago, now on ver 5.1.5. Windows 7 64bit.
Safari 5.1.5 for Win64 bit, Windows 7!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I think I solved the wifi connection problem, just by switching off completely the router! sounds trivial, but in this case it worked!!!
the funny behaviour of the trackpad/cursor still persists. any suggestion???
thanks again

Unless I repair my hard drive every other day I am unable to delete songs from iTunes or email messages from Postbox. I've only had an iMac for a few weeks, is this normal?

Unless I repair my hard drive every other day I am unable to delete songs from iTunes or email messages from Postbox. I've only had an iMac for a few weeks, is this normal?

Back up all data.
This procedure will unlock all your user files (not system files) and reset their ownership and access-control lists to the default. If you've set special values for those attributes on any of your files, they will be reverted. In that case, either stop here, or be prepared to recreate the settings if necessary. Do so only after verifying that those settings didn't cause the problem. If none of this is meaningful to you, you don't need to worry about it, but you do need to follow the instructions below.
Step 1
If you have more than one user, and the one in question is not an administrator, then go to Step 2.
Triple-click anywhere in the following line on this page to select it:
{ sudo chflags -R nouchg,nouappnd ~ $TMPDIR..; sudo chown -R $UID:staff ~ $_; sudo chmod -R u+rwX ~ $_; chmod -R -N ~ $_; } 2>&-
Copy the selected text to the Clipboard by pressing the key combination command-C.
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window by pressing command-V. I've tested these instructions only with the Safari web browser. If you use another browser, you may have to press the return key after pasting.
You'll be prompted for your login password. Nothing will be displayed when you type it. You may get a one-time warning to be careful. If you don’t have a login password, you’ll need to set one before you can run the command. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.
The command may take a few minutes to run, or perhaps longer if you have literally millions of files in your home folder. Wait for a new line ending in a dollar sign ($) to appear, then quit Terminal.
Step 2 (optional)
Take this step only if you have trouble with Step 1, if it frightens you, or if it doesn't solve the problem.
Start up in Recovery mode. When the OS X Utilities screen appears, select
Utilities ▹ Terminal
from the menu bar. A Terminal window will open.
In the Terminal window, type this:
res
Press the tab key. The partial command you typed will automatically be completed to this:
resetpassword
Press return. A Reset Password dialog will open. You’re not going to reset a password.
In the dialog, select the startup volume ("Macintosh HD," unless you gave it a different name) if it's not already selected.
Select your username from the menu labeled Select the user account if it's not already selected.
Under Reset Home Directory Permissions and ACLs, click the Reset button.
Select
 ▹ Restart
from the menu bar.

Your Mac won't start up in Mac OS X (Mac OS X 10.3.9 or earlier)

I just got off the phone with an AppleCare agent. My iBook OS 10.4 wouldn't start - it just went to a blue screen. I'm happy to say that the agent got everthing working again and said that she would email me an article that would help if it ever happens again. She emailed me "Your Mac won't start up in Mac OS X (Mac OS X 10.3.9 or earlier)" I have 10.4, is this article any use for me or was I emailed the wrong articel. Is there an article "Your Mac won't start up in Mac OS X (Mac OS X 10.4 or later)"????

Thank you for yoiur response. I'll click on that link and add my input..
Don't be put off by the title. The document's just as
valid for Tiger, especially if those are the same
steps that fixed your problem. The article was
revised Feb 2006 and someone forgot to update it to
mention Tiger. Go to
<http://docs.info.apple.com/article.html?artnum=106464
, click on the It's good, but... link and
tell them it should be updated to include a reference
to Tiger.

Ever since I received my Macbook Pro in July 2011 I've had issues with my wireless connection at home. After software updates, Apple support suggested I reboot my router which works. But now I have to do it every other day. ????

Ever since I received my Macbook Pro in July 2011 I've had issues with my wireless connection at home. After software updates, Apple support suggested I reboot my router which works. But now I have to do it every other day. ???? AT&T my DSL carrier suggests I get a new router. Apparently the one I have is really old and doesn't support my Macbook Pro. Does this sound right?

If your using WEP encryption yes, Apple has discontinued that becaues it's worthless. WEP (and WPA) is cracked so encryption makes no sense.
Get a new Wireless N router, set it up with WPA2 (AES) Personal and two different 20+ randon letter/numbersymbol character passwords
One for Admin access only of the router, keep this on paper off all comptuers in a safe someplace.
One for entering into devices, computers etc for Internet Access Only.
You need the long and random password to defeat brute force attacks by GPU software that the hackers have now.
Also if you give out the password to another, they can't hack the network with the guest access password.
Computers remember the internet password, so anyone with access to your machines or network will have the password.
Since you have another Admin only password, they can't hack in. got it?
You don't need "Invisible" or "MAC Address filtering" that's a waste of time as hackers can sniff a network and causes issues getting on the network.
Good luck.

TS1411 My Mac won't start

My Mac won't start. I have tried all trouble shooting things like unplug and plug into a different power point. If I leave finger on start button, can sometimes get internal fan to attempt to start then stops. Please help. My computer is less than two years old.

Then, it's time for a trip to an Apple repair station.

My Mac won't start up and Im using DiscWarrior. When I restart the computer with "c" down, the screen goes black. Is this ok? Do I just wait it out?

my Mac won't start up and Im using DiscWarrior. When I restart the computer with "c" down, the screen goes black. Is this ok? Do I just wait it out?

Have you just tried repairing with Disk Utility?
Repair the Hard Drive and Permissions - Lion/Mountain Lion
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the 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.
Repair
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 then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu. Select Restart from the Apple menu.

My mac won't start up it keeps on chiming tried o

My mac won't start had a power cut and now all it does is chimes.
Tried to press options and c but still continues to chime

You could try the ol SMC reset.
Shut down the computer.
Unplug the computer's power cord.
Wait fifteen seconds.
Attach the computer's power cord.
Wait five seconds, then press the power button to turn on the computer.
http://support.apple.com/kb/HT3964
If it still does not work, Restart using your 10.5 Install DVD as the boot volume holding down C from chime sound to apple logo appearance, then after selecting your language from the menu bar go to Utilities > Disk Utilities, and run Repair Disk on your Mac's HDD. Afterwards, exit DU, exit Install, restart normally.

EA6900 drops 2.4 GHz wifi every other day

Hey,
my EA6900 (firmware version 1.1.42.158863) drops the 2.4 GHz network every other day or so. At that point, all connected devices lose the network connection and cannot connect again until I manually reset the router. This is a big pain in the **bleep**.
Here is what this looks like on a Linux client:
May 4 07:50:06 habanero dhclient: DHCPREQUEST of 192.168.1.104 on wlan0 to 255.255.255.255 port 67 (xid=0x553aef8)
May 4 07:50:35 dhclient: last message repeated 2 times
May 4 07:50:39 habanero dhclient: DHCPREQUEST of 192.168.1.104 on wlan0 to 255.255.255.255 port 67 (xid=0x553aef8)
May 4 07:50:57 habanero dhclient: DHCPREQUEST of 192.168.1.104 on wlan0 to 255.255.255.255 port 67 (xid=0x553aef8)
May 4 07:51:13 habanero avahi-daemon[1696]: Withdrawing address record for 2605:6000:100e:c073:21e:68ff:fed6:7636 on eth0.
May 4 07:51:13 habanero avahi-daemon[1696]: Registering new address record for 2605:6000:100e:c073:21e:68ff:fed6:7636 on eth0.*.
May 4 07:51:13 habanero avahi-daemon[1696]: Registering new address record for fe80::21e:68ff:fed6:7636 on eth0.*.
May 4 07:51:13 habanero avahi-daemon[1696]: Withdrawing address record for 2605:6000:100e:c073:a18e:f467:24c3:f7bb on wlan0.
May 4 07:51:13 habanero avahi-daemon[1696]: Registering new address record for 2605:6000:100e:c073:a18e:f467:24c3:f7bb on wlan0.*.
May 4 07:51:13 habanero avahi-daemon[1696]: Registering new address record for fe80::216:eaff:febc:cc0e on wlan0.*.
May 4 07:51:15 habanero kernel: [425404.872139] cfg80211: Calling CRDA to update world regulatory domain
May 4 07:51:15 habanero wpa_supplicant[1981]: wlan0: CTRL-EVENT-DISCONNECTED bssid=48:f8:b3:9d:ae:5b reason=4
May 4 07:51:15 habanero NetworkManager[1772]: <info> (wlan0): supplicant interface state: completed -> disconnected
May 4 07:51:15 habanero NetworkManager[1772]: <info> (wlan0): supplicant interface state: disconnected -> scanning
May 4 07:51:15 habanero kernel: [425405.033185] cfg80211: World regulatory domain updated:
May 4 07:51:15 habanero kernel: [425405.033189] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
May 4 07:51:15 habanero kernel: [425405.033192] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 4 07:51:15 habanero kernel: [425405.033194] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 4 07:51:15 habanero kernel: [425405.033196] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
May 4 07:51:15 habanero kernel: [425405.033198] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 4 07:51:15 habanero kernel: [425405.033200] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
May 4 07:51:17 habanero avahi-daemon[1696]: Withdrawing address record for 2605:6000:100e:c073:3d66:cec1:f213:3d26 on eth0.
May 4 07:51:17 habanero avahi-daemon[1696]: Leaving mDNS multicast group on interface eth0.IPv6 with address 2605:6000:100e:c073:3d66:cec1:f213:3d26.
May 4 07:51:17 habanero avahi-daemon[1696]: Joining mDNS multicast group on interface eth0.IPv6 with address 2605:6000:100e:c073:21e:68ff:fed6:7636.
May 4 07:51:17 habanero dhclient: DHCPREQUEST of 192.168.1.104 on wlan0 to 255.255.255.255 port 67 (xid=0x553aef8)
May 4 07:51:21 habanero NetworkManager[1772]: <info> (eth0): carrier now OFF (device state 100, deferring action for 4 seconds)
May 4 07:51:21 habanero kernel: [425411.065496] r8169 0000:03:00.0 eth0: link down
May 4 07:51:23 habanero NetworkManager[1772]: <info> (eth0): carrier now ON (device state 100)
May 4 07:51:23 habanero kernel: [425412.693894] r8169 0000:03:00.0 eth0: link up
May 4 07:51:30 habanero NetworkManager[1772]: <warn> (wlan0): link timed out.
May 4 07:51:30 habanero NetworkManager[1772]: <info> (wlan0): device state change: activated -> failed (reason 'SSID not found') [100 120 53]
May 4 07:51:30 habanero NetworkManager[1772]: <warn> Activation (wlan0) failed for connection 'olalmaro5'
May 4 07:51:30 habanero dbus[1572]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
May 4 07:51:30 habanero NetworkManager[1772]: <info> (wlan0): device state change: failed -> disconnected (reason 'none') [120 30 0]
May 4 07:51:30 habanero NetworkManager[1772]: <info> (wlan0): deactivating device (reason 'none') [0]
May 4 07:51:30 habanero NetworkManager[1772]: <info> (wlan0): canceled DHCP transaction, DHCP client pid 19785
May 4 07:51:30 habanero avahi-daemon[1696]: Withdrawing address record for 2605:6000:100e:c073:a18e:f467:24c3:f7bb on wlan0.
May 4 07:51:30 habanero avahi-daemon[1696]: Withdrawing address record for 2605:6000:100e:c073:216:eaff:febc:cc0e on wlan0.
May 4 07:51:30 habanero avahi-daemon[1696]: Leaving mDNS multicast group on interface wlan0.IPv6 with address 2605:6000:100e:c073:216:eaff:febc:cc0e.
May 4 07:51:30 habanero avahi-daemon[1696]: Joining mDNS multicast group on interface wlan0.IPv6 with address fe80::216:eaff:febc:cc0e.
May 4 07:51:30 habanero avahi-daemon[1696]: Withdrawing address record for fe80::216:eaff:febc:cc0e on wlan0.
May 4 07:51:30 habanero avahi-daemon[1696]: Leaving mDNS multicast group on interface wlan0.IPv6 with address fe80::216:eaff:febc:cc0e.
May 4 07:51:30 habanero avahi-daemon[1696]: Interface wlan0.IPv6 no longer relevant for mDNS.
How do I fix this?
I've enabled automatic router firmware updates, but this has not helped over the last weeks.
Thanks in advance,
Robert

There is a bunch of people with this router ( me included) that are having issues with the wireless dropping out. Some more than others as far as the frequency of it. I have a ticket open with them and have been talking to them every few days about it. One thing I discovered the other day that has stopped it from dropping connections on the 2.4 is to set the mode to G only. I have given this info to linksys and they are supposed to get back to me by tomorrow with some more info. I am assuming it is the same problem as yours: everything is working fine then all of a sudden devices start to disconnect randomly. An my laptops it shows as the SSID is available but it wont connect to it. Only way to get back on is to reboot the router. As suggested by linksys the security is set to WPA2 Personal and the bandwidth is set to 20 mHz instead of auto. There was a big thread about this starting to happen when the last update came out that went from 1.1.42.156465 to 1.1.42.158863. If the Auto update was checked it got the update and started to disconnect wireless stuff. Might want to see what hardware version your is, the 1.0 came with the 1.1.42.156465 so if yours has updated to the newer one you could roll back and see if it gets better. there is a go back to last version button on the UI. but if you have the hw ver 1.1 it came with the updated version and we have been told not to go back as it may brick the router. here is the thread: http://community.linksys.com/t5/Wireless-Routers/EA6900-New-Firmware-1-1-42-158863/td-p/770985

I Mac won't start -- we get apple logo with spinning wheel, question mark that disappears and then a blank blue screen

My daughter's old I Mac won't start. It is not backed up. We want to get some things off of it if we can.
When we turn it on, we get the Apple logo with spinning wheel for awhile, then a question mark briefly and then a sky blue blank screen. Is there any hope of getting this to work? This computer is out of warranty. Does it seem that if we reinstall the Operating System we might find old data?

First try restarting with the original install disc an run Disk Utility to repair the drive. If you have to re install the OS make sure you select archive and install or else everything will be lost.

Acrobat Pro for Mac won't start, even after restarting the machine. Any suggestions?

Acrobat Pro for Mac won't start, even after restarting the machine. Any suggestions?

Hi Patrick,
Can you please mention the version of Adobe Acrobat that you are using and on what OS version. Also mention whether this problem has started recently and was running fine earlier or is it a fresh install and has never worked for you.
Have you tried uninstalling and reinstalling the product after you started facing this issue.
-Shashi

Finder is freezing after installing Yosemite. Having to relaunch every other day.

After installing Yosemite, I went to finder and noticed that the text was blacked out and it was frozen ( not allowing me to go anywhere in the finder). After relaunching the finder it started working fine. But since then I am having to relaunch the finder every day or every other day. Is there a fix for this or no? Just wondering as its beginning to be an issue. Haven't had this issue before and I'm on a mid 2013 Macbook Pro Retina.

Hi
I have a Late 2013 retina MacBook Pro, and i've the same issue than you... I don't really know from where it comes from...
Do you have a third party software to browse external device in NTFS format such an external hard drive?
I have a path to explore since i noticed this bug the first time i tried to browse my external hdd.
Here is a screenshot of the bug :
Or when i browse local ssd (where Yosemite is installed) i got a blank folder...
I got graphic glitches when entering Time Machine for exemple.
I'm using the last version of Tuxera NTFS (trial version) supporting Yosemite...
I've no problem so far with Mavericks which is working flawlessly...
My install of Yosemite is a clean install without any third party software/drivers, the problem is here with or without Tuxera NTFS installed. I did two clean install in the passt two days.
Many thanks if Apple could do something for this bug.
I did an Apple Diagnostic and there is no mistake with the hardware according to the result.

Every other day, my mac won't start up

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