I have a circle with a bar across it on start-up

I have a desktop mac that I installed yosemite on. It has been running poorly since then and now I cannot start it up. I tries to start in safe mode but still get a circle with a bar on it.

Startup - prohibitory sign at OS X bootup
Startup Issues - Resolve
Startup Issues - Resolve (2)
Startup Issues - Resolve (3)

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Hi, I've lost all sound; keys F 3 4 and 5 only come up with a circle and diagonal bar across it. no sound in i-tunes and none in garage band or YouTube viewings

please help. all sound gone from my system. keys 3 4 and 5 only respond with line of bars and 'not permitted' circle with diagonal bar across. I've tried i-tunes garage band and YouTube. When I click on the loudspeaker icon at the top, I cant alter the slider below...

Could be many things, we should start with this...
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair. Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
Also, open Audio Midi Setup in Applications>Utilities, see the input & output options & KHz setting there, some things will change it for their own use, then not set it back.

TS3423 Mac book pro stops responding after Maverick OS restart. Currently have a circle with a line through it after 20+ hours. Tried to shut it down and use the Time Machine to restore but no response. How can I restore with Time Machine if it will not s

Mac book pro stops responding after Maverick OS restart. Currently have a circle with a line through it after 20+ hours. Tried to shut it down and use the Time Machine to restore but no response. How can I restore with Time Machine if it will not start?

sonjadg,
you can purchase a replacement pair of grey installation DVDs for your MacBook Pro from either Apple or iFixit. If Startup Manager is only showing an OS X Installer volume, then it sounds like the Mavericks installer had a problem midway through its installation process. To fix this, you’re going to need to erase your internal disk and reïnstall your original version of OS X from the grey Mac OS X Install DVD, use Software Update to get it back to 10.6.8 (presuming that your MacBook Pro originally came with Snow Leopard), and then restore from Time Machine.

Went to upgrade and says OS too old. I went back to older version of foxfire. Now I have a circle with a line through it and when I try to open it I get,You cannot open the application "Firefox" because it is not supported on this architecture.

I have PowerBook G4, running 10.5.8. Went to upgrade and says OS too old. I went back to older version of foxfire. Now I have a circle with a line through it and when I try to open it I get,You cannot open the application “Firefox” because it is not supported on this architecture. Thanks for the help.

Firefox 3.6.x is the last available from Mozilla for PPC Macs. 
http://www.mozilla.com/en-US/firefox/all-older.html
For older Macs that aren't supported in Firefox 4+ versions, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 . 
http://www.floodgap.com/software/tenfourfox/ 
http://tenfourfox.blogspot.com/ 
https://code.google.com/p/tenfourfox/wiki/PluginsNoLongerSupported

Why does my screen have a circle with contact name

why does my screen have a circle with contact name

it might be the recents feature showing up on the home screen, this can be switched off.Once you’ve completed the upgrade to iOS 8, head to Settings > Mail, Contacts, Calendars. Scroll down until you see the Contacts section and tap on Show In App Switcher. Here you’ll see the options for displaying contacts in the app switcher screen: your iPhone favorites, your recent contacts, or both. Note that if you enable both favorites and recent contacts, your favorites will be displayed first, and you’ll have to scroll to the right to see your recent contacts.

Since the Nov update about a third of my songs have a circle with an exclamation mark inside it. These song will not play on my computer. I reload with my own cd collection, it works for a while then the same thing happens. Message says "Song could not be

Since Nov update about a third of my songs have a circle with an exclamation mark inside the circle. These songs will not play on my computer. Message says "The song .... could not be used because the original file could not be found. Would you like to locate it?" I have reloaded these back onto itunes with my own CD collection. They work for a short while, then the same thing happens. I don't know what is causing this or how to fix it.

I finally resolved my problem after spending way too much time on it. I simply handed my 160GB iPod to my husband to put his fav Stones & Beatles songs on and I went back to my 80GB Microsoft Zune which has never disappointed me.
After spending so much time trying to figure this out I did finally take it back to Apple Store who performed a diagnostic and found there was a problem with the device. They replaced it with a refurbished one which has similar issues. All I wanted to do was listen to my music. Was that too much to ask? So I am happy to be free of this problematic device. No more Apple for me!!

My home movie DVD folders all have red circle with white dash and won't allow the files to be read. Is there any way around this so I can back up the DVD's on a external HD?

My home movie DVD folders all have red circle with white dash and won't allow the files to be read. Is there any way around this so I can back up the DVD's on a external HD?

Drag the folders to the external drive, and if prompted, click Authenticate. You'll probably be asked for an administrator password.
(116608)

HT1386 I have a circle with a square in the middle next to songs in a play list and I am unable to play them? WHy and how do I make this go away!

I have a circle with a square in the middle next to songs in a play list and I am unable to play them? WHy and how do I make this go away!

Hi k_smith1298,
Thanks for visiting Apple Support Communities.
First, be sure you've restarted and reset your iPhone:
iOS: Turning off and on (restarting) and resetting
http://support.apple.com/kb/ht1430
If you are syncing music with an iTunes library, you may want to try setting up syncing in iTunes again by following the steps in the appropriate article below. If you're syncing music, try un-checking and then re-checking the "Sync music" checkbox in iTunes.
iTunes 11 for Mac: Set up syncing for iPod, iPhone, or iPad
http://support.apple.com/kb/PH12113
iTunes 11 for Windows: Set up syncing for iPod, iPhone, or iPad
http://support.apple.com/kb/PH12313
If the issue isn't resolved after this, you may want to back up and restore your iPhone:
iTunes: Restoring iOS software
http://support.apple.com/kb/HT1414
Regards,
Jeremy

Startup screen has a circle with a bar through it

When starting my Macbook the apple logo goes to a circle with a bar through and then it just freezes.

Hi Doug....if you take your install DVD...place it in the disk drive and hold down the 'C' key while restarting the MacBook....will it boot from the DVD?
Googled this...
http://reviews.cnet.com/8301-13727_7-10444282-263.html
Message was edited by: Dave Stowe

Some of my songs and TV shows have a circle with a square in it next to them and are darken and I cannot listen to or watch these items. What's going on and how do I fix it?

Some of my songs and TV shows have a circle with a square in it next to them and are darken and I cannot listen to or watch these items. What's going on and how do I fix it?

Try resetting you phone by holding the power and home buttons at the same time until you see the Apple logo, then release. If no change you might need to try syncing all your music and TV shows off your iPhone, then sync them back on (be sure they are in your iTunes library before doing so).

Please help, my Mac book pro, starts but could not access the users, out just keeps spinning until it does a circle with a line across

I was doing a check up with onyx and all of the sudden the computer got stucked. I turned it off and back on and nOw it starts but access the users and Just spins. After a while, It just shows a circle with a line across

It says suid file system library cores has been modified and will not be repaired, what can i do?

Across the top of my screen i have a circle with a lock inside. never had before??

across top of my screen i have a 3/4 circle with a lock symbol inside?

It means that your screen is locked in portrait orientation. To unlock it, see page 21 of the iPhone iOS5 User Guide.

I have a 2 inch gray bar across the top of my home page now after dragging a few windows around my desk top. I'm not sure if it's a mozilla thing or google thing but it just appeared and I would like to get rid of it. g

My home page is just www.google.com with a search box and a picture of some planets as a background from my computer. While I was dragging the restored down browser window, I slipped with my mouse and now I have a light gray two inch bar across the top of my background picture. It's below the; Search-Images-YouTube-News-Gmail-More icons. When I right click on it and select inspect Element (Q) it says div#gbx1.gbqfh in three different colors. I would like to get rid of it, but I don't know if it's a google or Mozilla issue. I know google has been changing things so it wouldn't surprise me if it was just a coincidence.

Is there any text in that gray bar?
I see some buttons on it, do they have a tooltip?
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.org/kb/Safe+Mode
Are you using a proxy to connect to the internet?
See "Firefox connection settings":
*https://support.mozilla.org/kb/Firefox+cannot+load+websites+but+other+programs+can

In my application folder i have several applications that have a circle with a cross what does this mean?

When i go to my application folder several of the apps have a circle wih a slash .
what does this mean? However everything opens fine. its for address book, ichat and ical.
its been like this since the last time i formated .

I don't think i migrated anything over, i had a bit of trouble restoring my accoun from a backup and never actually did.
My time mechine backups are currently on a hard drive adn the only way to access the data is to run StellarPhonixMacDataRecovery every time to accesss my data.
But thats an entirely other problem/ storey.
So if i press commmand R when it starts do i need my Mac OX Disc becuse i baught the newest version on MAC OX X from the app store.
The funny thing is , even tho there is a cirlce with a slash all the applictions in question that has this works fine like ical and address book, iuse them all the time.
thanks for your repleis

I have a circle with a cross thru it on the screen

My Ipod will not do anything - it just has a red circle with a red cross on screen

Hi, echokim.
Thank you for visiting Apple Support Communities.
Here is the best article to go through when your iPod displays this image.
iPod Displays a Red "X" Icon
http://support.apple.com/en-us/HT203170
Cheers,
Jason H.

I have a circle with a bar across it on start-up

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