IMac Flat Panel Gray Screen when I Turn On

My iMac won't load. When I turn it on there is the "chime" then nothing but a gray screen. I tried reseting the PMU, but still nothing. The machine froze while doing a backup and my hubby forced the machine off. When I tried to turn on the next day, this is what I got. Have tried starting it with everything unplugged... I am in the USVI and there are no Apple people here so I really need some HELP!

Since the problem seems to have started with the forced shutdown, try repairing the hard drive following the steps in Trav's Tips
You can also review this Apple KB Article
Try repairing the disk first and see if that does the trick.
Good luck (although since you're in the VI's your luck seems to be pretty good!)
Clint

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IMac stuck at gray screen when booting

Hi - My 2011 iMac with 10.8.2 is stuck on the gray screen when rebooting. I was in Windows 7 bootcamp, and restarted to OS X. I see the screen below, and once the progress bar reaches 100%, the computer shuts off. Every time I reboot, the same problem. I've disconnected everything, except for the standard bluetooth wireless keyboard. I've tried some various boot options, such as holding down Shift while rebooting, as well as command+R, but neither had any impact, it is the same problem over and over. Any tips on what to try next?

If you want to preserve the data on the internal drive(s), you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data, you can skip this step.
There are several ways to back up a Mac that is unable to fully boot. You need an external hard drive to hold the backup data.
1. Boot into Recovery (command-R at startup) or from a local Time Machine backup volume (option key at startup.) Launch Disk Utility and follow the instructions in the support article linked below, under “Instructions for backing up to an external hard disk via Disk Utility.”
How to back up and restore your files
2. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode by holding down the key combination command-T at the startup chime. Connect the two Macs with a FireWire or Thunderbolt cable. The internal drive of the machine running in target mode will mount as an external drive on the other machine. Copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
How to use and troubleshoot FireWire target disk mode
3. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.

My imac has a gray screen when waking it up from sleep mode. about 9 months ago, I installed OS X Maverick.

This is the second time this has happened, since installing OS X (9 mos. ago). (I can't recall the fix from the last incident.) Upon waking the pc up from sleep mode, I get a gray screen. Nothing works except using the Command and P & R keys to get to "reinstalling OS X", to no avail. What do I need to do to get it back to normal?
My imac is a 21.5", mid 2011 item.

Those keys do not reinstall OS X. To do that:
Reinstall Lion, Mountain Lion, or Mavericks without erasing 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
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.
Reinstall Mountain Lion or Mavericks
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
OS X Lion- Reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless.
COMMAND-OPTION-P-R keys resets the PRAM. OS X keyboard shortcuts.

My iMac has a black screen when I turn it on.

When I tune on my mac it goes straight to a black screen. What do I do to fix this?

You are posting this in a server/enterprise message board. You might have better lucking posting it somewhere else.
You can try hooking up an external display to your iMac to see if it's a problem with the iMac screen or the logic board. If you get an external display picture, then you probably have a display problem in your iMac (bad lcd, bad back light, bad power to display, etc).
Also, try unplugging your computer from the electricity, holding down the power button for 15 seconds, and then plugging it in again. This resets the power management system, just in case something got buggy.
Good luck!

My Imac is showing gray screen with red line when booting and restarts again

My Imac is showing gray screen with red line when booting and restart again, I can load it in windows 7 safe mode with red lines across the display, pls help

The graphic card is damaged. You can't do anything more than taking your computer to an Apple Store or reseller and getting your graphic card replaced.
Sometimes, when the graphic card is damaged, operating systems can't start. That's caused because the drivers that make the graphic card work detect an error, telling the operating system that the graphic card is unusable, so the operating system can't start and it restarts. However, you can start in safe mode because operating systems use a basic driver in this startup mode

Gray screen when turning on iBook G4 with tiny file folder in center of screen blinking the finder icon and a question mark. Have tried several things. Any help please??

Gray screen when turning on iBook G4 with tiny file folder in center of screen blinking finder icon and question mark. I cannot figure this out. Tried everything I know. Can someone help please???

Hello,
Ideally you need to boot from the disk as you have no other media advisable. (e.g your hard drive)
Without some form of system disk or restore you wont be able to diagnose the problem with your hard drive.
By using a Mac OS X system disk you can load up the Disk Utilities and repair the hard drive if shown it's available. If it's not available you would need to replace the hard drive and reinstall Mac OS. Without any disk to support you, you are going to struggle.
You can obtain replacement disk, both retail copies or system disk on the Internet.
If you know what version of Mac OS X you had install (I'm guessing that it would have been 10.3, but would recommend 10.4) A retail disk is normally black with a colored 'X' on it, while system disk are always.
Always try and obtain a copy of the system restore disks (Gray) for your iBook
Ebay is another outlet that has genuine system disk for sell, but like any auction site, it's as and when someone is selling them.
The only other thing you could do is take it to a Apple repair agent who could check the hard drive on your behalf. That way you can get confirmation if the problem is the drive or some other fault. They may even help restore the OS for you.
I can't think of anything else to try without some form of disk to help you.
There maybe just one other small thing you could try.
When booting up, firmly rest your palm of your hand on the iBook next to the tracker pad on the left side.
If it works then it's another fault that I'm aware of.

15" i7 Macbook Pro from early 2011.takes the mac laptop two or three tries to boot successfully. It would turn on, show gray screen, shut down, turn on again, show gray screen, shutdown, and then turn on, show gray screen, before it can finally get

Hello All,
I have a 15" i7 Macbook Pro from early 2011. The past few weeks, it has been getting increasingly difficult to get on my computer. It takes the mac laptop two or three tries to boot successfully. It would turn on, show gray screen, shut down, turn on again, show gray screen, shutdown, and then turn on, show gray screen, before it can finally get to the dark gray log-in screen. Even when I finally get logged in to start working, thinking it would be okay now, it shuts down randomly.
I've ruled out the possibility of a software problem because I've just done a clean re-install of Mac OS X Mavericks on my computer just yesterday.
I did upgrade the RAM recently, about a month and a half ago, from 4GB to 16GB, I went to the apple store four days after that upgrade to have them do a hardware test, and clean the inside of my laptop, which helped with previous heat issues. When they did the hardware test, the hardware was all registered as fine from their system.
I've tried resetting the SMC, PRAM, and doing the internet recovery hardware test, but to no avail. I thought I could at least find out what parts needed to be replaced from the hardware test but it seems that when the hardware test is almost finished, the computer just shuts down, So I am unable to see the results.
My computer is also having battery issues, under battery condition, it says "replace now," parts have been ordered, waiting for arrival. But if the battery health is low, it should still boot up fine, it would just hold a significantly less charge.
Could this be a hard drive issue?
Has anyone had similar symptoms and how was it resolved?
Does anyone know what I can do to alleviate this issue?
I haven't had time to take it to Apple because I'm currently taking a 21 credit semester academically. I'm an art and design student so my computer is basically the bane of my existence. Help! Any constructive advice is welcomed!
Thank you so much for your input!
-Christina C.

Problem description:
The Hard Disk is failing.
EtreCheck version: 2.0.11 (98)
Report generated November 4, 2014 at 7:59:28 AM EST
Hardware Information: ℹ️
MacBook Pro (15-inch, Early 2011) (Verified)
MacBook Pro - model: MacBookPro8,2
1 2.2 GHz Intel Core i7 CPU: 4-core
16 GB RAM Upgradeable
BANK 0/DIMM0
8 GB DDR3 1600 MHz ok
BANK 1/DIMM0
8 GB DDR3 1600 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
Intel HD Graphics 3000 - VRAM: 512 MB
Color LCD 1440 x 900
AMD Radeon HD 6750M - VRAM: 1024 MB
System Software: ℹ️
OS X 10.9.5 (13F34) - Uptime: 0:3:43
Disk Information: ℹ️
TOSHIBA MK7559GSXF disk0 : (750.16 GB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted> : 210 MB
HDV4 (disk0s2) / [Startup]: 749.30 GB (712.10 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
MATSHITADVD-R   UJ-898
USB Information: ℹ️
Apple Inc. FaceTime HD Camera (Built-in)
Apple Inc. BRCM2070 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Computer, Inc. IR Receiver
Thunderbolt Information: ℹ️
Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
Mac App Store and identified developers
Kernel Extensions: ℹ️
/Library/Application Support/Avast/components/fileshield/unsigned
[loaded] com.avast.AvastFileShield (2.1.0 - SDK 10.9) Support
/Library/Application Support/Avast/components/proxy/unsigned
[loaded] com.avast.PacketForwarder (1.4 - SDK 10.9) Support
Launch Agents: ℹ️
[not loaded] com.adobe.AAM.Updater-1.0.plist Support
[loaded] com.avast.userinit.plist Support
Launch Daemons: ℹ️
[invalid?] com.adobe.SwitchBoard.plist Support
[loaded] com.avast.init.plist Support
[loaded] com.avast.uninstall.plist Support
[loaded] com.avast.update.plist Support
[invalid?] com.perion.searchprotectd.plist Support
User Launch Agents: ℹ️
[invalid?] com.avast.home.userinit.plist Support
[loaded] com.google.keystone.agent.plist Support
[invalid?] com.jdibackup.ZipCloud.autostart.plist Support
User Login Items: ℹ️
None
Internet Plug-ins: ℹ️
AdobePDFViewer: Version: 10.1.1 Support
QuickTime Plugin: Version: 7.7.3
JavaAppletPlugin: Version: 14.9.0 - SDK 10.7 Check version
Default Browser: Version: 537 - SDK 10.9
User Internet Plug-ins: ℹ️
TroviNPAPIPlugin: Version: 1.0 - SDK 10.9 Support
Google Earth Web Plug-in: Version: Unknown
Safari Extensions: ℹ️
Avast Online Security
Trovi Search for Safari
3rd Party Preference Panes: ℹ️
None
Time Machine: ℹ️
Time Machine not configured!
Top Processes by CPU: ℹ️
      16% mds
      7% WindowServer
      1% loginwindow
      1% fontd
      1% com.avast.daemon
Top Processes by Memory: ℹ️
120 MB com.avast.daemon
86 MB Google Chrome
52 MB Finder
52 MB WindowServer
41 MB Google Chrome Helper
Virtual Memory Information: ℹ️
13.45 GB Free RAM
1.34 GB Active RAM
944 MB Inactive RAM
1.43 GB Wired RAM
1.11 GB Page-ins
0 B Page-outs

Why does my imac get a black screen when switching on

why does my imac get a black screen when turning on, and logging in is very slow.

I would first reset the SMC:
Shut down and unplug the Mac.
Keep the Mac unplugged for at least fifteen seconds.
Plug the Mac back in and do not turn it back on for at least five seconds.
Press the power button to turn the Mac back on.
Then I would reset the PRAM by rebooting the iMac while simultaneously holding the Command-Option-P-R keys until the machine restarts a second time.
Let us know if these procedures don't solve the problems.
Hope this helps

Why does my Mac stay on the white screen when I turn it on?

Why does my Mac stay on white screen when I turn it on?

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a boot failure is to secure your data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since your last backup, you can skip this step.
There are several ways to back up a Mac that is unable to boot. You need an external hard drive to hold the backup data.
a. Boot into the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.”
b. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
c. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
Sometimes a boot failure can be resolved by resetting the NVRAM.
Step 3
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 4
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to boot, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can boot now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
If you've booted from an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.
Step 5
Boot in safe mode. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you boot in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, your boot volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 6.
If you can boot and log in now, empty the Trash, and then open the Finder Info window on your boot volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then reboot as usual (i.e., not in safe mode.)
If the boot process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 6
Launch Disk Utility in Recovery mode (see Step 1.) Select your startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then reboot as usual.
Step 7
Reinstall the OS. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 8
Repeat Step 6, but this time erase the boot volume in Disk Utility before installing. The system should automatically reboot into the Setup Assistant. Follow the prompts to transfer your data from a Time Machine or other backup.
Step 9
This step applies only to older Macs (not current models) that have a logic-board ("PRAM") battery. Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a boot failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 10
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

White screen when I turn the Satellite M50 on

I intermittently just get a white screen when I turn the computer on. Usually the problem is solved by switching the computer off and trying again - but sometimes I get a white screen again.
It seems to be connected to use of external devices - can anyone give me clear instructions about what should/should not be connected when I start and shut down the computer? Or any other suggested solutions?
Thanks

Thanks for your reply/advice - and the tip about Antivir. I used to use AVG and then Norton came as a package with this laptop....will have a re-think when my subscription need renewing.
I have updated the display/graphics driver but am still having the same problem of a white screen at boot-up. On reflection I think it is possibly a loose connection as I have just been a long trip with the laptop - including a fairly bumpy 4 hour bus ride - and I recall having the same problem several months ago which self-corrected after a similar trip (taking it down to a Toshiba ASP who never saw it as they were closed for the week-end and I had to get back to work!). This may sound strange but I took the laptop for a walk yesterday to see if any loose connection would shift and it then booted up on the second attempt rather than the 8th!
I guess I'll have to take it to the ASP - unfortunately it's no longer under warranty.
EDIT:
Problem solved. High temperature caused this issue
http://forums.computers.toshiba-europe.com/forums/thread.jspa?threadID=23402

FAO: Moderators... iMac Flat Panel broken

Dear Moderators,
The Forum (ID=870) "Expanding your iMac (Flat Panel)" is coming up with 'Error' in both Safari and Firefox right now (so I don't think it's me).
This is also causing errors on the iMac Flat Panel Category page where no posts are being listed.
Thanks
mrtotes

Don,
Thanks, nice to know it wasn't just me.
mrtotes
Message was edited by: mrtotes
Ah it seems all is well again....

HT1752 iMac flat panel 2003 shows airport but does not connect

Hi,iMac flat panel 2003 shows airport but does not connect

No problems.
Let's double-check your iMac's Internet Sharing configuration:
To setup for Internet Sharing (Wired to Wireless):
Setup the Network
Cable Modem > (Ethernet cable) > \[Ethernet port] iMac > (wireless) > MacBook
Enable Software Firewall (iMac)
System Preferences > Security > Firewall
o Block all incoming connections (enabled)
Enable Internet Sharing (iMac)
System Preferences > Sharing
o Select "Internet Sharing" from the options in the left column
o Share your connection from: Built-in Ethernet
o To computers using: AirPort (checked) (Note: Uncheck all other entries in the list.)
AirPort Options... (iMac)
o Network Name: <anything you want>
o Channel: Automatic
o Enable encryption <do NOT enable at this time>
o Click OK
o Select "Internet Sharing" again
o Click "Start" to start Internet Sharing
o Click Start
Please verify these settings, and try accessing the Internet from the MacBook again. For this exercise, I suggest co-locating the MacBook with the iMac.

Does iMac Flat Panel have built in Dual Voltage Support?

I have iMac Flat Panel 17" machine (PowerPC G4 1GHz) I am living in USA currently I am travelling to India where the power rating is 220V 50Hz instead of 110 V. I know all laptops have dual voltage support.
Does iMac Flat Panel have built in Dual voltage support or Do I need to buy converter of some sort?
If I need to buy Power Converter what Power Rating it should be?

Hi Vijay,
Good news:
Yes, you can plug the iMac G4 anywhere in the world, no problem.
- KB article #75099: Apple Power Supplies: Changing voltage settings
(<small>Always make sure: the electrical info is visible on the large metal plate at the bottom. It is required by international law to have this info visible on all electrical appliances</small>)
HTH
Axl

I have my macbook pro 17" 2.5 Q.C. i7,750GB HDD 5400rpm, 4gb ram, amd radeon 1gb dedicated graphics with intel hd graphics 3000,antiglare screen when i turned on my laptop and see the specs is not showing the 1gb graph. only 512mb.

i have my macbook pro 17" 2.5 Quad. Core. i7,750GB HDD 5400rpm, 4gb ram, amd radeon 1gb dedicated graphics with intel hd graphics 3000,antiglare screen when i turned on my laptop and see the specs is not showing the 1gb graph. only 512mb is there anybody out there have the same problem please how can i know or is there any other way to be sure what's the real capacity of my graphics?take note this is brand new late 2011 model made to customize MD311 with anti glare screen...

I have the same machine, except it's running the blessed fast Snow Kitty,
"when I turn on my laptop and see the specs is not showing the 1gb graph, only 512mb is there"
What specs are you refering about?
Hold the command shift and 4 keys down, draw a box around what your seeing and upload the desktop image in your post response here.

My imac has a gray screen and spinning wheel and will not start up

my imac has a gray screen with a spinning wheel but will not start what does this mean?

Probably a damaged or failed HD. Please read Gray screen appears during startup on how to troubleshoot and what to do.

IMac Flat Panel Gray Screen when I Turn On

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