Problems with iMac 21.5 inch screen
Dear all,
As you can see on the pictures I have the following problems with my iMac. I get spots if I have to drag folder for example or when I open a picture in Preview. It is a normal background picture but if I open it in preview I get dots and since Maveriks it has become more worse. I get real weird lines.
I have the following iMac 21.5 inch:
- 21.5-inch, Mid 2010
- 3.6GHz Intel Core i5
- 8 GB 1333 MHz DDR3
- ATI Radeon HD 5670 512 MB
I have already tried:
- New internal memory;
- Reinstall OS X;
Apple can not really help. They also do not know what is problem. I also have no apple warranty.
Would anyone help me with this? You are my last attempt.
Thanks in advance.
My guess is your GPU (graphics processing unit) is failing. Take the machine to your local Apple Store and have a Genius examine it or take it to an Apple Authorized Service Provider (AASP). Please click https://locate.apple.com/country to begin looking for an AASP in your area.
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I can't use the mouse or anything else, and after a while the fans start to go on max. This is the second time I encounter this problem within 30 days. What I have noticed is that the day before, the brightness of the screen started to "blink" slightly -- like if the screen tried to adjust itself.
But I haven't experienced what Bob North describes as the: "Upon boot, the dispaly appears normal, but within 5-10 minutes, either at desktop or in ASD, the normal display will "crash" to the "plaid" display".
I just restart with the power button and everything is working OK. I made an Extended Hardware test without any problems detected.
I have been looking for this issue with iMac G5 20" (iSight) and only found it at http://www.macintouch.com/readerreports/imacg5/topic2276.html#apr25 :
Apr. 18, 2006
bob north
I repair Apple products, and recently I've seen strange and erratic display problems with the G5 flat-panel (iSight) 17" and 20"...and I am very curious about the origin. The picture will display what I will call "plaid pixles". Upon boot, the dispaly appears normal, but within 5-10 minutes, either at desktop or in ASD, the normal display will "crash" to the "plaid" display. The desktop, or whatever, can still be distinguished in the background, but it is overwashed by the plaid patterns -- which do change slightly, and also cover the full space of the screen. I've seen different scenarios, 3 in 2 weeks, where the symptom is exhibited with no particular failure pattern -- both before and after repair. I've replaced the main logic on one occasion, with no fix...but the 2nd try replaced both display panel and inverter. The display issue was fixed, but the system exhibited lockups only when it reached the destop. Another repair the same issue was seen after replacing the 20" main logic, where the symptom was not present previous. Personal opinion of the late 2005 IMAC flat-panels, in the hardware sense, is the likelihood of component manufacture issues, possibly the main logic boards or the panel displays themselves. Repair of this model, as opposed to the earlier, non-iSight flat-panel 17 and 20" models are extremely difficult -- access to main componenets is blocked by the display panel, which must be removed for each troubleshooting attempt. The internal hardware design is not oriented for repair ease...they are by far the most difficult to work on.
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Apr. 19, 2006
Robert Mohns
bob north describes: "...recently I've seen strange and erratic display problems with the G5 flat-panel (iSight) 17" and 20"...and I am very curious about the origin. The picture will display what I will call "plaid pixles". Upon boot, the dispaly appears normal, but within 5-10 minutes, either at desktop or in ASD, the normal display will "crash" to the "plaid" display. The desktop, or whatever, can still be distinguished in the background, but it is overwashed by the plaid patterns -- which do change slightly, and also cover the full space of the screen."
Does it look anything like this?
http://downwardspiral.net/gallery/pbg4-display
My nearly 3 year old Titanium PowerBook G4 just did this one day, out of the blue. The problem went away after a few minutes, but I had already taken photos. Thanks to those photos, Apple gave the powerbook a new logic board.
(This PowerBook has had its logic board replaced twice, a new optical drive, and a cracked case edge replaced. AppleCare has more than paid for itself. Despite the occasional problems, I remain very happy with this machine. I'm sure I'd be much less happy if I had not bought AppleCare!)
HubertHubert Frank,
To Apple Discussions!
What troubleshooting methods have you tried to solve your issue?
The knowledgeable users will need this info to avoid the "been there, done that" senerios.
Have you tried the methods mentioned in the following Knowledge Base Article?
http://docs.info.apple.com/article.html?artnum=301283 Troubleshooting when there's no picture on the display
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When you verified with disk utility the disk, you basically ran fsck. Permissions are another factor here, but the fact it failed the disk check suggest major directory problems with the hard disk. Unfortunately the only third party directory repair utilities that I know work well currently are for PowerPC Macs only. If you have another Mac, suggest putting the iMac in target disk mode and see if it is seen by the other Mac. The target disk mode is described by this article:
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Today I bought a new i5 iMac with 8Gig of ram. I had massive problems with the instillation of Lion. I spoke with Apple for nearly 1.5 hours. I finally got it working and now it has crashed 9 times in 30 minutes. Why?? Please Help. I am going to take it back to the shop tomorrow.
Thanks fro your quick reply.
I get the slow darkened screen that moves down the until it says that I have to hold down the poer button for a forced restart.
I tried opening all the really big memory hogs ll at once, eg Final cut pro, apature, imove HD etc, and that was no problem. It seem sto be completly random.
This is the report that I get:
Interval Since Last Panic Report: 387 sec
Panics Since Last Report: 6
Anonymous UUID: 5400E7FB-D8A1-4CDD-985D-3F1E8023753D
Fri Aug 26 23:00:24 2011
panic(cpu 2 caller 0xffffff80002c268d): Kernel trap at 0xffffff8000293188, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0xfffffb8009a19ac8, CR3: 0x000000000eaeb00f, CR4: 0x00000000000606e0
RAX: 0xffffff8009a36e78, RBX: 0xffffff8009a466d0, RCX: 0xffffff80008bd800, RDX: 0x00000000000000e0
RSP: 0xffffff80f2b23d80, RBP: 0xffffff80f2b23da0, RSI: 0xffffff8009a1bec0, RDI: 0xffffff80008bd8e0
R8: 0xfffffb8009a19ac0, R9: 0xffffff80f2b23ef8, R10: 0x00000001136ef000, R11: 0x0000000113650f80
R12: 0xffffff80008bcc00, R13: 0x0000000000000000, R14: 0x0000000000000072, R15: 0x000000000000000e
RFL: 0x0000000000010202, RIP: 0xffffff8000293188, CS: 0x0000000000000008, SS: 0x0000000000000000
CR2: 0xfffffb8009a19ac8, Error code: 0x0000000000000002, Faulting CPU: 0x2
Backtrace (CPU 2), Frame : Return Address
0xffffff80f2b23a40 : 0xffffff8000220702
0xffffff80f2b23ac0 : 0xffffff80002c268d
0xffffff80f2b23c60 : 0xffffff80002d7a3d
0xffffff80f2b23c80 : 0xffffff8000293188
0xffffff80f2b23da0 : 0xffffff80002958b2
0xffffff80f2b23dc0 : 0xffffff800026c5ba
0xffffff80f2b23f40 : 0xffffff80002c1f2b
0xffffff80f2b23fb0 : 0xffffff80002d7961
BSD process name corresponding to current thread: WebProcess
Mac OS version:
11B26
Kernel version:
Darwin Kernel Version 11.1.0: Tue Jul 26 16:07:11 PDT 2011; root:xnu-1699.22.81~1/RELEASE_X86_64
Kernel UUID: D52AAB80-B2BC-3C6E-BBEA-78BD28064998
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com.apple.driver.AppleFWOHCI 4.8.6
com.apple.iokit.AppleBCM5701Ethernet 3.0.6b9
com.apple.driver.AppleEFINVRAM 1.5.0
com.apple.driver.AppleAHCIPort 2.1.8
com.apple.driver.AppleUSBEHCI 4.4.0
com.apple.driver.AppleACPIButtons 1.4
com.apple.driver.AppleRTC 1.4
com.apple.driver.AppleHPET 1.6
com.apple.driver.AppleSMBIOS 1.7
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com.apple.driver.AppleAPIC 1.5
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com.apple.driver.AppleAVBAudio 1.0.0d11
com.apple.driver.AppleSMBusController 1.0.10d0
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com.apple.iokit.IOSurface 80.0
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com.apple.iokit.IOPCIFamily 2.6.5
com.apple.iokit.IOACPIFamily 1.4
Model: iMac12,2, BootROM IM121.0047.B0A, 4 processors, Intel Core i5, 2.7 GHz, 8 GB, SMC 1.72f1
Graphics: AMD Radeon HD 6770M, AMD Radeon HD 6770M, PCIe, 512 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1333 MHz, 0x02FE, 0x45424A3231554538424655302D444A2D4620
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x02FE, 0x45424A3231554538424655302D444A2D4620
Memory Module: BANK 0/DIMM1, 2 GB, DDR3, 1333 MHz, 0x802C, 0x000000000000000000000000000000000000
Memory Module: BANK 1/DIMM1, 2 GB, DDR3, 1333 MHz, 0x802C, 0x384A53463235363634485A2D314734443120
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x9A), Atheros 9380: 4.0.55.4-P2P
Bluetooth: Version 2.5.0f17, 2 service, 19 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: ST31000528AS, 1 TB
Serial ATA Device: HL-DT-STDVDRW GA32N
USB Device: FaceTime HD Camera (Built-in), apple_vendor_id, 0x850b, 0xfa200000 / 3
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfa100000 / 2
USB Device: Maxtor 3200, 0x0d49 (Maxtor), 0x3200, 0xfa120000 / 6
USB Device: External HDD, 0x1058 (Western Digital Technologies, Inc.), 0x1003, 0xfa130000 / 5
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 4
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8215, 0xfa111000 / 7
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: hub_device, 0x050d (Belkin Corporation), 0x0234, 0xfd140000 / 5
USB Device: DataTraveler 2.0, 0x0951 (Kingston Technology Company), 0x1607, 0xfd142000 / 7
USB Device: Basics Desktop, 0x0d49 (Maxtor), 0x7410, 0xfd143000 / 6
USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0xfd110000 / 4
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0xfd120000 / 3
I got this photo from the net, but this is what I get. (Now 12 times)
It was a 4 Gig ram imac, but the store made it up to 8 gig with 4x2 gig before I collected it.
Memory Slots:
ECC: Disabled
BANK 0/DIMM0:
Size: 2 GB
Type: DDR3
Speed: 1333 MHz
Status: OK
Manufacturer: 0x02FE
Part Number: 0x45424A3231554538424655302D444A2D4620
Serial Number: 0x245317A8
BANK 1/DIMM0:
Size: 2 GB
Type: DDR3
Speed: 1333 MHz
Status: OK
Manufacturer: 0x02FE
Part Number: 0x45424A3231554538424655302D444A2D4620
Serial Number: 0x245317A9
BANK 0/DIMM1:
Size: 2 GB
Type: DDR3
Speed: 1333 MHz
Status: OK
Manufacturer: 0x802C
Part Number: 0x000000000000000000000000000000000000
Serial Number: 0xFFFFFFFF
BANK 1/DIMM1:
Size: 2 GB
Type: DDR3
Speed: 1333 MHz
Status: OK
Manufacturer: 0x802C
Part Number: 0x384A53463235363634485A2D314734443120
Serial Number: 0xEA364A5A -
Problem with my mac freezing and screen glitching?
I have the 2013 15 inch retina Macbook Pro and I have been having a problem with it lately. Whenever I use safari, my browser is freezing constantly. Its is only when I use safari, not any other applications, such as Microsoft word. Normally, I wouldn't consider this a big issue, but it gets worse. When I don't navigate on my computer and let it rest for a minute or so (while running safari and sometimes other applications) this screen pops up:
I have not dropped my computer, nor done anything to cause any damage to it. It hasn't moved from my desk and I am clueless as to what the problem could be.Hi patrickk9,
Welcome to the Apple Support Communities!
If you are continuing to see this type of display distortion on your MacBook, I would suggest working through the troubleshooting steps outlined in the attached article.
Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
Best regards,
Joe -
I've had my iMac for a little over a year and now I am having problems with programs not opening, but then not being able to close. the arrow is under them but no matter how many times I force quit it won't close. Happens mainly with Toast and Itunes. Also, sometimes the computer will go to sleep and I can't get it to wake up. when this happens the fan just goes crazy. I have reset permissions and verified permissions. I have run the OSX disk with hardware utility and everything checks out fine. Will I have to reformat or just not use it anymore?
JasonJason -
Sometimes zapping the P-RAM helps:
1. After the startup tone, hold down <cmd><opt><r> until 3 additional startup tones are heard, then release the 4 keys.
Sometimes doing the Open Firmware resets helps:
1. After the startup tone hold down <cmd><opt><O><F> until a text screen appears (that's the letter Oh, not the number zero).
2. When you can start typing, enter the following commands, following each command by pressing <return>.
reset-nvram
set-defaults
reset-all
The mac will start normally at this point.
If still not successful, try this as well:
After the startup tone, hold down the <shift> key until you (hopefully) reach the desktop. This start is called "Safe Start" and it will be longer than normal, because Disk Utility's "repair" is invisibly run; it also will bypass any login items. If the system gets to the desktop OK this time but stalls when the shift key is NOT held down, the problem may be some login item that will need to be removed, using the Accounts panel of System Preferences and its Login Items section.
If none of these suggestions work, you may be required to perform an Archive and Install re-installation of the Mac OS. This is one of the options presented by the OS installer when you run it, and it preserves all your settings, data and added programs, but puts a new copy of the OS on the hard drive from which to boot.
Please let us know how you make out,
Miriam
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