I have noticed my iMac's screen flashes every so often. Any ideas?, I have noticed my iMac's screen flashes every so often. Any ideas?

My iMac seems to be running just fine, but every so often my screen flashes. I have not noted any regular intervals for when it happens nor have I tied it to an particular activity I am doing at the time. Anyone else notice this happening?

Contact Apple Service, iMac Service or Apple's Express Lane. Do note that if you have AppleCare's protection plan and you're within 50 miles (80 KM) of an Apple repair station, you're eligible for onsite repair since yours is a desktop machine.

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I have an iMac G5 isight (20" screen) Leopard OS 10.5.8 I do not have an intel chip. I am unable to open movie links on facebook using Adobe flash player. I called Adobe Systems and they said Adobe no longer supported computers that did not have intel chi

I have an iMac G5 (20 inch screen) i sight (no intel chip).Leopard OS 10.5.8. Recently I went on Facebook and tried to open a movie site someone had sent me on Facebook andwhen I tried to open the video on Facebook, I was told I had to upgrade my Adobe Flash Player. i tried to do this, but turns out that Facebook is requiring folks to have an intel chip in order to view movies...this is outrageous! Just think of all the folks in the world who have great running pre intel chip Apple computers. I called the Adobe Help line and was told that I really needed to buy a new computer....no thanks. How do I find a way to get a new version of Adobe for Facebook and youtube. I wish Apple could develop a way to have intel chips installed in the older computers. If you have any suggestions on this please let me know.
Thanks, Sarah

Either get a screen cleaning cloth, or carefully us a slightly damp lint-free cloth and dry off with a dry link-=free cloth.
As to Flash Videos: I am in a similar same boat. I cannot watch flash videos on the BBC website or on BBC iPlayer, although all other flash videos (YouTube and FaceBook for example) are fine.
For reasons that passeth all understanding, they work with the PPC version of Firefox, called TenFourFoxG5.app, once you have anabled plug-ins, as it does not natively support Flash.
You can download TenFourFoxG5 from here:
http://www.floodgap.com/software/tenfourfox/
Now for the intersting bit: TenFourFox, like Firefox, does not support most plug-ins. Unless you are prone to headaches (in which case don't) you can read about that here:
http://code.google.com/p/tenfourfox/wiki/PluginsNoLongerSupported
But there is a workaround!
Open TenFourFox and type in the address bar: about:config (no spaces) and click return. This gives you a warning that it might harm the application. Ignore that and click on 'I'll be careful, I promise' and you get the config file that you can edit - with great care.
Look/search (scroll down) for: tenfourfox.plugins.enabled
Set it to true. (Double click it to toggle it)
Now close TenFourFox, open it again, and Flash will now work, as it now uses the plug-ins that Safari has stored.
I am using Flash 10.1.102.64 in TenFourFox and it works just fine.

I am trying to reinstall winows 7 on my iMac and it will not install. I am using the latest drivers ( v4.0) but I still get the black screen. I have made sure that the auto install and the drivers are at the root level on my USB flash drive.

I am reinstalling W7 on my iMac and keep getting the black screen. I had installed W7 before when using Snow Leapord but W7 doesn't want to install with the latest drivers (v4.0). W7 was working with Lion but I had to uninstall W7 and now I cannot reinstall.

NOTE: Just discovered that Adobe is making a bigger mess than any previously.
They now have a 32-bit uninstaller for Flash '''''AND''''' a separate 64-bit uninstaller for Flash. You will need the 64-bit uninstaller for what you had installed above.
*32-bit uninstaller: http://download.macromedia.com/pub/flashplayer/current/uninstall_flash_player_32bit.exe
*64-bit uninstaller: download.macromedia.com/pub/flashplayer/current/uninstall_flash_player_64bit.exe

When scrolling vertically there is an horizontal line which causes distorsion of the screen. I do not have noticed such concern on my iMac or on my macbook. What happen with the macpro ?

When scrolling vertically there is an horizontal line which causes distorsion of the screen. I do not have noticed such concern on my iMac or on my macbook. What happen with the macpro ?

MacPro bought in 2010
MacBook Pro
MacBookPro7,1
Intel Core 2 Duo
2,4 GHz
Nombre de processeurs :          1
Nombre total de cœurs :          2
Cache de niveau 2 :          3 Mo
Mémoire :          4 Go
Vitesse du bus :          1,07 GHz
Version de la ROM de démarrage :          MBP71.0039.B0B
Version SMC (système) :          1.62f6
Numéro de série (système) :          W804853GATP
UUID du matériel :          716CB476-983B-5C43-B363-988FB608C01C
Capteur de mouvement brusque
État :          Activé
System:
Mac OS X 10.6.7 (10J869)
Darwin 10.7.0
Video DIsplay Card
NVIDIA GeForce 320M :
Jeu de composants :          NVIDIA GeForce 320M
Type :          Processeur graphique (GPU)
Bus :          PCI
VRAM (totale) :          256 Mo
Fournisseur :          NVIDIA (0x10de)
Identifiant du périphérique :          0x08a0
Identifiant de révision :          0x00a2
Révision de la ROM :          3533
Moniteurs :
LCD couleur :
Résolution :          1280 x 800
Profondeur de pixels :          Couleurs 32 bits (ARGB8888)
Miroir :          Activé
État du miroir :          Miroir matériel
Connecté :          Oui
Intégré :          Oui
Is that what you asked ? Do you need other data ?
Note that I have also strong distorison when running slides show with iphoto.
Thanks

I bought iMac 27 quad core i7 last June. Last month i have noticed lots of dark patches on the screen and now they are growing more. i bought this from US but now i have moved to Kuwait. How much it cost to replace the screen?

I bought iMac 27 quad core i7 last June. Last month i have noticed lots of dark patches on the screen and now they are growing more. i bought this from US but now i have moved to Kuwait. How much it cost to replace the screen?

Mac and Mac models are picky about the RAM the Mac needs to see and use.
As you have found out, the 1067 speed RAM will not work in your year and model iMac.
You need the 1333 speed RAM.
If, you can return the RAM for a refund, do it!
If not, try online Mac RAM source and seller Crucial memory. They have a table that matches your Mac to the correct and reliable RAM. You may need to contact them to see whether or not they ship to South Africa, though.
If Crucial dpesn't work out, here's the specs for your year and model iMac that you need to seek out and purchase.
Maximum Memory
32 GB (Actual) 16 GB (Apple)
Memory Slots
4 - 204-pin PC3-10600 (1333 MHz) DDR3 SO-DIMM
Good Luck!

Does anyone else have a glitch? When I click on the top button then slide it, I notice a flash on the screen before the main page shows up. Anyone know about this or seen it?

I have an Iphone4 from verizon. This is my 2nd and still has the same problem I am trying to figure out. To turn on the phone, I press the top button, and then I slide to unlock the phone, i notice a flash before it gets to the main screen. Its a little irritating and it only does it every so often. I dont know anyone else that has this problem. I took it to the apple store and they said it may be in between updates. So they gave me a brand new one for free. At first they said it was because I had a screen protector on the front but that wasnt it, so it remains a mystery. Any ideas?

When you say turn on the phone, do you mean just unlocking the phone to get to your home screen ( icons)?

My iMac has a blank screen with an icon showing a flashing question mark. I have rebooted and still nothing but that on the screen.

My iMac has a blank screen showing an icon with a blinking question mark. I have rebooted and still the same. Any ideas?

Mac OS X: Gray screen appears during startup BTW, iOS info is useless, post machine and OS version specifics.
27" i7 iMac (Mid 2011) refurb, OS X Yo (10.10), Mavs, ML & SL, G4 450 MP w/10.5 & 9.2.2

Received notice to update software on my 24" iMac - after it re-booted, all i get is a whit screen. Have tried turning it off, then on - still the white screen.

Received SW update notice (from Apple) this morning for my 24" iMac. After it re-bootd, all that appeared is a white screen - no icons, just white. I re-booted, again - just a white screen.

Start up using your original install discs by inserting the disc and holding the C key while rebooting. Run Disk Utility to repair the drive and restart. If everything goes ok run Software Update again.

I have an iMac, purchased in 2007. When I turn it on I am getting a grey screen with a flashing question mark

Anyone know what I need to do

A flashing question mark indicates the startup volume cannot be found. Follow the link above for troubleshooting, however be prepared for a failed internal hard drive. If I am correct you will need to take it into an Apple Store or AASP to have the HD replaced.

I have an imac running OSX leopard 10.5.4, and a flashing question mark comes up on the screen. I opened disk utility, and in the sidebar my hard drive is not there. I also did the Hardware test supplied with the install CD, and "no problems were found".

note: I have not done the extended hardware test yet.

Can we assumed that the Disk Utility you used was not on your hard disk? If it was on the hard disk you can ignore most of the advice here and we should start again.
I am am a retired Electrical Engineer with many years electronics and IT experience and advise that whilst it is likely that the hard disk has failed and may never work again this may not necessarily be the case.
Do you normally hear or feel the disk running and has this changed?
Have you moved, dropped or hit your Mac while the disk was rotating? - never good for disks.
Even if the disk is not rotating it may not have failed - there could be an imperfect connection, damaged pcb track, a Mac electronics failure such as disk power etc.
The disk could be working mechanically and there could be a break in the data route to or from it etc.
Getting at disks inside some Apple assemblies can be tedious but probably not as bad as you may think - Google for instructions and pictures.
Much may depend upon how important information on a troublesome disk is. Even with a totally dead disk 90% of data can normally be extracted - ocasionally I have been lucky enough to do this at home - a few years back several experts were offering to to this for about 1,000 USD.
Trying the disk in another enclosure was good advice.
You could try gently moving your powered up Mac to see if anything changes.
It is technically possible for a software (unlikely as issue still exists booting from DVD I assume) or firmware issue to cause your symptoms so it might be wise to try every type of reset you can find before going any further. Firmware normally resides within the electronics - it often affects booting and power supplies etc.
Good luck.

HT2404 I am getting notices from web sites that they won't support Safari 4.1.3 much longer, but I'm having trouble finding a version of Safari that will work with Mac OS 10.4.11. I have a n iMac flat screen "lampshade" and still love it.

Help welcomed. How can I upgrade Safari without upgrading to OS 10.5?

Safari let's you change your identity ( user agent string ) to anything. This is what the server thinks you are running. Want to be run Windows 7 IE8? No problem.
http://www.onedigitallife.com/2005/08/03/changing-safaris-user-agent/
Whether the pages looks good depends on the capabilities of the Browser.
Robert

My Late 2013 iMac with Yosemite 10.10.2 randomly shuts down and displays a grey screen with a flashing question mark folder. According to Disk Utility, my drive is OK. What should I do?

I've had this problem for a while and I thought it went away. I've looked at all of the other discussions and tried what they suggest, nothing. I preferably don't want to erase everything on here. Is there a way to fix it without having to do that? I also noticed that other people have the screen when they first boot their computer. Mine are in the middle of a college essay or browsing online. I would really like to fix this issue. I haven't even had my iMac for a year yet. Any suggestions?

Question (?) Mark, Blinking Folder, or Gray Screen at Startup
These are related but not identical issues. Their causes are outlined in Intel-based Mac- Startup sequence and error codes, symbols. Solutions may be found in:
A flashing question mark appears when you start your Mac
Mac OS X- Gray screen appears during startup
In most cases the problems may be caused by one or more of these:
a. Problem with the computer's PRAM - See Resetting your Mac's PRAM and NVRAM.
b. Boot drive's directory has been corrupted - Repair with Disk Utility.
c. Critical system files are damaged or deleted - Reinstall OS X.
d. The disk drive is physically non-functional - Replace the hard drive.
Note that the information I have provided is what Apple recommends, If other users suggest different solutions than found here, then be sure what they recommend does not impact on your warranty, if any, or ability to get continuing Apple service.
Please don't start removing drives or changing cables unless you know what you are doing and have exhausted other non-invasive alternatives outlined here. If you perform any work yourself that is unapproved by Apple, then you will void any warranty you may have and lose all further Apple Support.
Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. 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 click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
The main difference if you are using Lion or Mountain Lion is that you must first boot from the Recovery HD. Simply boot from the Recovery HD to perform the above.
Reinstall Snow Leopard Without Erasing The drive
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. 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 click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install Mac OS X 10.6.8 Update Combo v1.1.
Reinstalling Lion/Mountain Lion Without Erasing The Drive
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 the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
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 click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

Imac Flashing blue screen

23" iMac from 08 or 09 suddenly started flashing a blue screen in early January. Took it into to the apple store they said they couldn't emulate the problem but they did some software updates "so hopefully that fixed the problem". It didn't. I ended taking it again, still they couldn't find the problem. I really frustrated now. Here are the things that I've tried on my own:
I updated all my software and reset permissions.
I used chrome, but at the apple store while running test they only used Safari. SO I thought Chrome might be the problem. I un-installed it. But still have the same issue.
I also noticed at the apple store they use their own power cord, I knew it might be a long shot but I bought a new power cord, didn't work.
Ive completely cleared and re-installed the operating system and didn't put any of my old file or programs on it thinking they might be the culprits, but no still flashing blue.
I've tried looking through post with other people that have the a similar issue, but they all seem to be connected to an external monitor which I do not have.

My Apple care just expired in February but I'm in contact with apple trying to figure something out since I took the computer to them twice before it expired but they couldn't figure it out.
I don't understand why at home it flashes like crazy but at the store it's fine. I downloaded the istat program, I'm not really sure what is normal but I feel like the room where I keep my computer is relativley cool and I don't think that's the problem. Here are the stats on my computer it has been running for about an hour with video running in the background while I browse the web (and yes it is currently flashing):
After doing some more research I also think It has to be the graphics cards, i'll talk to apple about it this weekend and see what I can do.
Thanks for the help guys! and sorry for all the typos in my first post, yikes!

My 2007 iMac seems to reset the home screen when not in use. I am running mavericks and have had no other issues... just curious if this is a sign of something worse or to come?

I updated to Mavericks and love it. Its made both my 2007 iMac and 2007 MacBookPro faster. But I have noticed in the last couple of days that my iMac screen with periodically go blank except for the background photo I set... then just as fast the icons on the desktop flash back up. Is this a sign of something wrong or impending?

Finder crashes are often caused by "Google Drive." If it's installed, I suggest you remove it according to the developer'sinstructions. You may need to boot in safe mode to do so. Back up all data before making any changes.
If you use Google Drive and don't want to remove it, then try deselecting the option in its preferences to show a status icon. According to reports, that may be enough to stop the Finder from crashing.

IMac 10.4.11 Because permanent vertical lines have appeared on my screen, I need to get a new monitor. The adapter apple sells goes from female VGA to mini-DVI. What kind of cable should I get as well:female to male?

If I use an adapter (female VGA to mini-DVI) for my iMac 10.4.11 OSX, I also need a cable. Should that cable be female VGA to male VGA?
Permanent vertical lines have appeared on my display, and connecting to another display (monitor) requires a cable and adapter. I want to be sure I am purchasing the correct cable for the Apple adapter.

What made me think I need to format if I upgrade the OS?
I just presumed so really.
What made me think I need to constantly format computer with my problem?
Well, after many attempts to repair the drive, which fails, cannot even reach the log in screen, I am left with no other choice?
And also, I have to note now, System Preferences keeps crashing without reason, it either takes ages to load, just by clicking it to open, or clicking something within it, or it just crashes.
And temporarily, it freezes the computer totally, with no response.
Seriously, am I missing a system file or something? Anyone experienced this problem before?
My computer is literally a blank computer right now, installed VLC and Shades, updated Adobe Flash Player, installed Skype and Adium. I would say Growl from Adium caused it, but it has happened prior to Skype and Adium. Any ideas anyone?
Thanks,
From Lelouch

I have noticed my iMac's screen flashes every so often. Any ideas?, I have noticed my iMac's screen flashes every so often. Any ideas?

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