Imac screen dims and two browser windows flicker.

Not sure how to explain this, but when I have two browser windows open, at random, they start to flicker and the whole screen gets dim.
What can I do?
Thanks

I just noticed that when it happens, the mouse pointer stays with the hand icon.
Then when I move it to a window, that window goes dim.
Can someone explain this?
Thanks

Similar Messages

Blue screen on start up. The wheel spin and the blue screen gets brighter for a second, then the blue screen dims and it repeats with the wheel.

When I start up my imac, I get a blue screen. The wheel spin and the screen gets brighter for a second, then the blue screen dims and it repeats with the wheel.

Are you referring to the startup screen which is normally gray with the dark gray Apple logo or are you referring the login screen which is typically blue? If it's the latter you might give this a try:
Clearing Caches to Fix Login Problem
You will need to type some Unix commands. If you are not comfortable with this, I don't know of anything other than a re-install. But if you are careful, you should be OK. I recommend you print this out in a largish mono-spaced font so you don't miss any spaces (or add extra ones). Note that case is important.
Be careful. Some of these commands are dangerous, since you are going to be root.
Start up in Single-user Mode. When this has finished you will see a prompt ending in '#', although there may be other messages. Enter the following commands after the prompt:
/sbin/fsck -fy
Press RETURN. Wait a few seconds for 8-10 lines of output. If the last line says repairs were carried out, repeat this command until you get a message 'The volume <yourdiskname> appears to be OK'. Then continue with:
/sbin/mount -uw /
cd /Library/Preferences
rm com.apple.loginwindow.plist
rm com.apple.windowserver.plist
cd /Library/Caches
rm -r *
cd /System/Library
cd /System/Library/Caches
rm -r *
reboot
Press RETURN after each command.
This should now take you to a proper login screen after the normal boot sequence. You should then Repair Permissions by using Disk Utility (in your /Applications/Utilities folder).
If it's the former then reinstall OS X. For Snow Leopard:
Reinstall OS X without erasing the drive
Do the following:
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 the Combo Updater for the version you prefer from support.apple.com/downloads/.

Screen dims and multi-language "restart" message appears

Currently, every time Safari is used, the entire screen dims and a multi-language (German, Chinese, etc.) message comes on the screen saying that I must physically power down my machine and restart. No error message is given, nor are any other options allowed, as the keyboard and mouse are rendered useless.
I have rebooted the machine several times, including powering down the cable modem, but the problem persists.
This problem has occurred in the past, but seemed to clear itself, only to reoccur starting yesterday (23 Sep 05). I can't shake the feeling that this problem is more in the OS X arena than in Safari's, but testing does not seem to bear out my feelings - all other installed applications appear to run properly and this phenomenon of screen dimming with forced power down and restart does not occur with other applications.
Any thoughts? Thanks! Bob Meyer.

I suggest the following:
Repair the Hard Drive and Permissions - Mavericks, 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.
If you continue to have the problem, then reinstall the OS X Mavericks 10.9.2 Update (Combo) updater.

Why does my Imac screen slide and I lose my screen? It goes back to my desktop. Then sometimes my screen goes to full screen and I don't know how to get out of it.

Why does my Imac screen slide and I lose my screen ~ It goes back to my desktop.
Then sometimes my screen goes to full screen without me doing any commands, and I don't know how to get out of it without going to force quit and starting all over.

Hi,
When it goes full screen try moving the mouse up to top right of scren & see if there a double diagonal Arrow to click on.
On the other see if it's the silly implentation of Spaces/Mission Control/Expose in ML...
https://discussions.apple.com/thread/4298411?start=0&tstart=0

Aperture: two browser windows for same project?

I know that I can have two browser windows, each showing a different project; I want to have two browsers windows for SAME project. Is there a way to do this?

Can't be done as far as I know. Here's a link to some tips on multiple tabs in Aperture. http://www.apertureexpert.com/tips/2010/9/7/aperture-has-tabseasily-compare-proj ects.html

My iMac screen freezes and a grey colour slowly creeps down my screen

Hi, my iMac screen freezes and a grey colour slowly creeps down the screen and has a large black square in the centre saying "You must restart your computer by pressing the power button and then pressing it again to restart" or words to that effect in English and about 4 or 5 other languages. I find this happens more frequently when I try to stream movies or tv shows. It also happened when I was trying to download a couple of tv shows from iTunes.
It also sometimes makes a wierd sound a kind of loud noise like a record stuck in a groove. This has happend many times since upgrading to Lion. I hear a lot of people on here talking about their screens going completely black and not responding. I believe that mine has only gone black a couple of times and I couldn't wake it up from "sleep mode" with the mouse or keyboard. I don't know if this is also happening to other people, but my bluetooth keyboard keeps disconnecting all the time since the upgrade as well, it's driving me nuts!! Plus my wifi will show that it is fully operational, however, I can't use the internet when I wake my computer from sleep mode. I have to click on wifi and turn wifi off then on again before i can use it.
Is Apple going to come out with a fix or are we going to eternally suffer indefinitley.

Hi Eric,
I don't know why it didn't work before, but here is the most recent errol log. It crashed again about an hour later. If there is a solution, i would greatly appreciate knowing what it is because I can't enjoy using my computer anymore because of these constant crasahes.
Thanks for your time.
Interval Since Last Panic Report: 1060363 sec
Panics Since Last Report:          12
Anonymous UUID:                    065BD067-AFE6-4AB4-AEF2-30EF089ECE4C
Mon Oct 3 16:08:51 2011
panic(cpu 0 caller 0xffffff80002c268d): Kernel trap at 0xffffff7f80eb7282, type 13=general protection, registers:
CR0: 0x0000000080010033, CR2: 0x00000001006de5dc, CR3: 0x0000000035e9a003, CR4: 0x00000000000206e0
RAX: 0x00000000fffd1485, RBX: 0x0ae8df8948ee7500, RCX: 0xffffff800c5d1d74, RDX: 0xffffff807fbf3584
RSP: 0xffffff807fbf3310, RBP: 0xffffff807fbf3370, RSI: 0xffffff807b04a000, RDI: 0xffffff8000289003
R8: 0xffffff806af44e34, R9: 0xffffff807b04a078, R10: 0xfffffffffffffffe, R11: 0xffffff80002d8240
R12: 0xffffff807b04a000, R13: 0xffffff800c5d1d6c, R14: 0xffffff8000289003, R15: 0x00000005b80002a8
RFL: 0x0000000000010282, RIP: 0xffffff7f80eb7282, CS: 0x0000000000000008, SS: 0x0000000000000010
CR2: 0x00000001006de5dc, Error code: 0x0000000000000000, Faulting CPU: 0x0
Backtrace (CPU 0), Frame : Return Address
0xffffff807fbf2fd0 : 0xffffff8000220702
0xffffff807fbf3050 : 0xffffff80002c268d
0xffffff807fbf31f0 : 0xffffff80002d7a3d
0xffffff807fbf3210 : 0xffffff7f80eb7282
0xffffff807fbf3370 : 0xffffff7f80e9dfe5
0xffffff807fbf3510 : 0xffffff7f80ef8726
0xffffff807fbf3570 : 0xffffff7f80ef8985
0xffffff807fbf35b0 : 0xffffff7f80e869ee
0xffffff807fbf35c0 : 0xffffff7f80eb7bb5
0xffffff807fbf3630 : 0xffffff7f80e83879
0xffffff807fbf3670 : 0xffffff7f8091d255
0xffffff807fbf36b0 : 0xffffff8000639d0e
0xffffff807fbf3700 : 0xffffff7f8091d1d6
0xffffff807fbf3720 : 0xffffff7f8091d793
0xffffff807fbf3760 : 0xffffff7f8091cd81
0xffffff807fbf3790 : 0xffffff7f80e429e9
0xffffff807fbf37e0 : 0xffffff8000344b0b
0xffffff807fbf38f0 : 0xffffff80003c333d
0xffffff807fbf3b60 : 0xffffff80003caee9
0xffffff807fbf3c00 : 0xffffff80003cb3de
0xffffff807fbf3df0 : 0xffffff80003d2a6b
0xffffff807fbf3e10 : 0xffffff8000580f25
0xffffff807fbf3e60 : 0xffffff8000581185
0xffffff807fbf3e80 : 0xffffff8000532ec4
0xffffff807fbf3ee0 : 0xffffff8000533dd3
0xffffff807fbf3f20 : 0xffffff8000533ea7
0xffffff807fbf3f50 : 0xffffff80005ca88b
0xffffff807fbf3fb0 : 0xffffff80002d8383
      Kernel Extensions in backtrace:
         com.apple.iokit.IONetworkingFamily(2.0)[59A00F6B-3710-3E07-9921-70C45782FF8C]@0 xffffff7f8090e000->0xffffff7f80936fff
         com.apple.iokit.IO80211Family(400.40)[78A58272-2170-3068-9C63-88301C99C406]@0xf fffff7f80e2c000->0xffffff7f80e63fff
            dependency: com.apple.iokit.IONetworkingFamily(2.0)[59A00F6B-3710-3E07-9921-70C45782FF8C]@0 xffffff7f8090e000
         com.apple.driver.AirPort.Atheros40(500.55.5)[01000ACB-C064-3F42-820F-BDE2008267 25]@0xffffff7f80e64000->0xffffff7f80fa3fff
            dependency: com.apple.iokit.IOPCIFamily(2.6.5)[95ABB490-3AB5-3D5E-9C21-67089A9AE6A1]@0xffff ff7f80821000
            dependency: com.apple.iokit.IO80211Family(400.40)[78A58272-2170-3068-9C63-88301C99C406]@0xf fffff7f80e2c000
            dependency: com.apple.iokit.IONetworkingFamily(2.0)[59A00F6B-3710-3E07-9921-70C45782FF8C]@0 xffffff7f8090e000
BSD process name corresponding to current thread: MailTab for Gmai
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
System model name: iMac11,2 (Mac-F2238AC8)
System uptime in nanoseconds: 2869233943350
last loaded kext at 367480732136: com.apple.iokit.IOAVBFamily    1.0.0d22 (addr 0xffffff7f8078d000, size 36864)
last unloaded kext at 437236879883: com.apple.iokit.IOAVBFamily    1.0.0d22 (addr 0xffffff7f8078d000, size 36864)
loaded kexts:
com.apple.driver.AppleHWSensor    1.9.4d0
com.apple.driver.AppleBluetoothMultitouch    66.3
com.apple.filesystems.autofs    3.0
com.apple.driver.AppleMikeyHIDDriver    122
com.apple.driver.AppleUpstreamUserClient    3.5.9
com.apple.driver.AppleMCCSControl    1.0.24
com.apple.driver.AppleHDA    2.1.1f12
com.apple.driver.AGPM    100.12.40
com.apple.driver.AppleMikeyDriver    2.1.1f12
com.apple.kext.ATIFramebuffer    7.0.4
com.apple.ATIRadeonX2000    7.0.4
com.apple.driver.AudioAUUC    1.59
com.apple.iokit.IOUserEthernet    1.0.0d1
com.apple.Dont_Steal_Mac_OS_X    7.0.0
com.apple.driver.AudioIPCDriver    1.2.0
com.apple.driver.AirPort.Atheros40    500.55.5
com.apple.driver.ACPI_SMC_PlatformPlugin    4.7.0b2
com.apple.driver.AppleLPC    1.5.1
com.apple.driver.AppleBacklight    170.1.9
com.apple.driver.AppleUSBCardReader    3.0.0
com.apple.driver.AppleIRController    309
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless    1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib    1.0.0d1
com.apple.BootCache    32
com.apple.iokit.SCSITaskUserClient    3.0.0
com.apple.driver.AppleFWOHCI    4.8.6
com.apple.iokit.IOAHCIBlockStorage    2.0.0
com.apple.driver.AppleUSBHub    4.4.0
com.apple.driver.AppleEFINVRAM    1.5.0
com.apple.driver.AppleAHCIPort    2.1.8
com.apple.iokit.AppleBCM5701Ethernet    3.0.6b9
com.apple.driver.AppleACPIButtons    1.4
com.apple.driver.AppleUSBEHCI    4.4.0
com.apple.driver.AppleRTC    1.4
com.apple.driver.AppleHPET    1.6
com.apple.driver.AppleSMBIOS    1.7
com.apple.driver.AppleACPIEC    1.4
com.apple.driver.AppleAPIC    1.5
com.apple.driver.AppleIntelCPUPowerManagementClient    166.0.0
com.apple.nke.applicationfirewall    3.0.30
com.apple.security.quarantine    1
com.apple.driver.AppleIntelCPUPowerManagement    166.0.0
com.apple.driver.AppleBluetoothHIDKeyboard    152.3
com.apple.driver.AppleHIDKeyboard    152.3
com.apple.driver.AppleMultitouchDriver    220.62
com.apple.driver.IOBluetoothHIDDriver    2.5f17
com.apple.kext.triggers    1.0
com.apple.driver.DspFuncLib    2.1.1f12
com.apple.driver.AppleSMBusController    1.0.10d0
com.apple.kext.ATI4600Controller    7.0.4
com.apple.kext.ATISupport    7.0.4
com.apple.iokit.IOSurface    80.0
com.apple.iokit.IOBluetoothSerialManager    2.5f17
com.apple.iokit.IOSerialFamily    10.0.5
com.apple.iokit.IOFireWireIP    2.2.3
com.apple.iokit.IOAudioFamily    1.8.3fc11
com.apple.kext.OSvKernDSPLib    1.3
com.apple.driver.AppleHDAController    2.1.1f12
com.apple.iokit.IOHDAFamily    2.1.1f12
com.apple.iokit.IO80211Family    400.40
com.apple.driver.AppleSMC    3.1.1d2
com.apple.driver.IOPlatformPluginFamily    4.7.0b2
com.apple.driver.AppleSMBusPCI    1.0.10d0
com.apple.driver.AppleBacklightExpert    1.0.3
com.apple.iokit.IONDRVSupport    2.3
com.apple.iokit.IOGraphicsFamily    2.3
com.apple.driver.BroadcomUSBBluetoothHCIController    2.5f17
com.apple.driver.AppleUSBBluetoothHCIController    2.5f17
com.apple.iokit.IOBluetoothFamily    2.5f17
com.apple.iokit.IOSCSIBlockCommandsDevice    3.0.0
com.apple.iokit.IOUSBMassStorageClass    3.0.0
com.apple.iokit.IOUSBHIDDriver    4.4.0
com.apple.driver.AppleUSBMergeNub    4.4.0
com.apple.driver.AppleUSBComposite    3.9.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice    3.0.0
com.apple.iokit.IOBDStorageFamily    1.6
com.apple.iokit.IODVDStorageFamily    1.6
com.apple.iokit.IOCDStorageFamily    1.7
com.apple.driver.XsanFilter    403
com.apple.iokit.IOFireWireFamily    4.4.3
com.apple.iokit.IOAHCISerialATAPI    2.0.0
com.apple.iokit.IOSCSIArchitectureModelFamily    3.0.0
com.apple.iokit.IOUSBUserClient    4.4.0
com.apple.iokit.IOAHCIFamily    2.0.6
com.apple.iokit.IOEthernetAVBController    1.0.0d5
com.apple.iokit.IONetworkingFamily    2.0
com.apple.driver.AppleEFIRuntime    1.5.0
com.apple.iokit.IOHIDFamily    1.7.0
com.apple.iokit.IOUSBFamily    4.4.0
com.apple.iokit.IOSMBusFamily    1.1
com.apple.security.sandbox    165
com.apple.kext.AppleMatch    1.0.0d1
com.apple.security.TMSafetyNet    7
com.apple.driver.DiskImages    326
com.apple.iokit.IOStorageFamily    1.7
com.apple.driver.AppleKeyStore    28.18
com.apple.driver.AppleACPIPlatform    1.4
com.apple.iokit.IOPCIFamily    2.6.5
com.apple.iokit.IOACPIFamily    1.4
Model: iMac11,2, BootROM IM112.0057.B00, 2 processors, Intel Core i3, 3.06 GHz, 4 GB, SMC 1.64f5
Graphics: ATI Radeon HD 4670, ATI Radeon HD 4670, PCIe, 256 MB
Memory Module: BANK 0/DIMM1, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353637334648302D4348392020
Memory Module: BANK 1/DIMM1, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353637334648302D4348392020
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x8F), Atheros 9280: 4.0.55.4-P2P
Bluetooth: Version 2.5.0f17, 2 service, 19 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: ST3500418AS, 500.11 GB
Serial ATA Device: HL-DT-STDVDRW GA32N
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: Built-in iSight, apple_vendor_id, 0x8502, 0xfd110000 / 4
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0xfd120000 / 3
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfa100000 / 2
USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0xfa120000 / 4
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 3
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8215, 0xfa111000 / 5

Whenever I open new tabs Firefox crashes and the browser window closes automatically.what will I do?

I am facing this problem since a month.I never faced this problem before.I always feel good to use Mozilla Firefox as my browser.I used to open multiple tabs in a same browser window.For example- in a tab I logged in to Facebook,at same time I might be downloading songs or something else or open another site in the other tab.It might be 2 or 3 tabs sometimes.But now a days,I am facing the problem whenever I open multiple tabs.Its unusual and so much annoying.The Firefox crashes and the browser window closes showing a messege to send an error report.Please Help me.
N.B. - I am using the Windows service pack 2.
RAM - 2 GB
Hard disk MEmory - 250 GB.

I had this same problem. Seems to be caused by the web developer tool bar FF extension (this started happening after a recent update to that extension). After disabling it, my FF is back to normal :)

IMac screen pixilated and frozen on startup, won't get as far as home screen, any ideas? Thanks

iMac screen pixilated and frozen on startup, won't get as far as home screen, just pulsating pixilation! Any ideas gratefully received, Thanks

Hello,
Have you blown the dust out lately?
Does it get any further if it cools for an hour?
Hold Shift key at bootup... does that work?

I've been using FCP 7 on my iMac for quite some time with great success. Lately I created a new project and the browser window does not format properly (it's O.K. for previously created projects). The effects window is also not displaying properly.

Help! My browser window is suddenly not formatting properly. (losing browser formatting, glitch, bug) I'm using FCP 7 on an iMac with OS X 10.8.5 and have been successfully doing so for a couple of years. I fear my Final Cut Pro is corrupt and I have to re-install. Anyone ever see this problem? Old projects display and behave fine in the browser, but any new project I create, totally loses the formatting in the browser and the browser also does not display the "effects" window properly anymore. (see below)

YOU ARE A LIFE SAVER! I reinstalled the program and everything. THANK YOU! THANK YOU! MY HERO!!!

IMac 400 dim and jumpy screen

Sorry if this has been covered already -- I could not readily find a thread about this. Like some here, my DV 400mhz iMac screen is dim, and none of the things I've read here will brighten it up. I have to go into calibration and make some odd changes to get it bright enough to read certain web pages, for example.
But I learned to live with that. Now the screen is also "jumping," or wiggling from time to time -- just enough movement to be perceptible, and annoying. I fear the whole thing will be going out before I take steps to fix it, or replace it.
Can you hook up an external monitor to an old 400 mhz iMac? Any other ideas about the jumpiness and dimness? Thanks.

Sounds like the high voltage is going out. The jumping would be the HV filter caps going south.
A standard VGA monitor can be attached under the back behind the oval perforated grill.
Richard

IMac screen dims itself automatically; all attempted fixes fail; how can normal brightness be restored?

Machine and OS:
2007 white plastic iMac with 20" screen and 2 GHz Intel Core Duo, running OSX 10.6.8.
The problem:
The screen dims itself for no known reason. It is especially noticeable when waking from sleep: for the first second or two after waking up, the screen is at normal brightness -- but then after a second the computer seems to "remember" some setting or command, and the screen unquestionably dims itself to be about 20% or 25% darker.
Because the screen for a brief moment after waking is at full brightness, that proves to me that there is nothing physically "broken" about the display that prevents it from illuminating fully; it could be at full brightness if it "wanted to," but some kind of software or firmware glitch is telling it to be dimmer.
The fixes I have attempted so far -- ALL of which have FAILED (so please don't recommend them again):
- Reset the NVRAM or PRAM by holding down Command-option-P-R upon startup. For some reason this technique doesn't cause the second chime, so it doesn't appear to be zapping the NVRAM or PRAM or whatever, and consequently has no effect on the dimness, which persists unchanged after restarting.
- Reset the NVRAM using the terminal command ' sudo nvram boot-args=”-p -r” ', as recommended on this page: https://discussions.apple.com/thread/2172681?start=0&tstart=0. I can't tell if this really did reset the NVRAM (it doesn't cause a second chime upon restart), so I'll just have to assume that it "worked" -- but except for one instance, it had no effect on the screen dimness. (That one instance went like this: after issuing the Terminal command and restarting, the screen did go back to full brightness -- but only until the first sleep. After waking from that sleep, the screen once again dimmed itself as before. And no, I have not been able to repeat this momentary "success"; on all subsequent attempts following the exact same steps, no brightness has ever returned at all since.)
- Reset the System Management Controller (SMC) as recommended on this page: http://support.apple.com/kb/HT3964 . Basically this just entailed shutting down the computer waiting a few seconds, then unplugging it, waiting a few more seconds, then plugging it back in, then waiting a few more seconds, and then finally starting it up again. Result? No change: screen still dims itself.
- Pressed the "brighter" and "dimmer" keys on the keyboard; those do make the brightness go up and down, but the top brightness setting is much dimmer than it should be (and used to be). All the way to brightest setting = still noticeably dimmer than normal.
- Used the "brightness" slider in the System Preferences > Displays > Display window. That also does indeed adjust the brightness up and down, but as with the keyboard brightness keys, the highest setting is still too dim.
- Readjusted the "Calibration" in the System Preferences > Displays, which had no noticeable effect; even when going into Expert mode and adjusting every little aspect of the screen display's default settings. Those all seem to be about color balance anyway, not about brightness. I now have three different new calibration settings, and clicking back and forth between them and the default setting makes no real significant difference. Whatever setting I choose, it is still dimmer than it should be, even though in all my attempts at calibration I tried to make it brighter.
- Tried going to System Preferences > Universal Access > Seeing and adjusting the "Enhance Contrast" slider and trying out "Black on White" vs. "use Greyscale"; none of that helped, and did not seem to be relevant to the problem.
- Tried going to System Preferences > Energy Saver, and clicking the "Automatically reduce the brightness of the display before display sleep" check box on (and then closing the preference pane) and then off again (following the advice at http://support.apple.com/kb/TS2309?viewlocale=en_US) -- but it had absolutely no effect whatsoever on the brightness level.
Final note: The keyboard and mouse are both Apple products and work perfectly, and the machine has no other performance issues. Just the dimming, which started a few weeks ago inexplicably and without warning.
I can't imagine what is causing this problem, and I've absolutely run out of ideas about how to fix it. One thought I had was that maybe the screen is dimming itself due to detected ambient illumination, but I'm not sure 2007 iMacs even have that feature, and also the screen remains dim whether the room is dark or bright. Maybe there is an ambient light detector somewhere that is malfunctioning?
Help! How can I solve this? The screen is not so dim as to be unusable, but it's annoying enough that I'll have to get a replacement machine if this is not fixed eventually.

Does an external display also act in a similar manner as the internal one?
Some earlier Intel-based iMacs had graphic processor card issues; not sure what
the symptoms of the majority of them were, but some had odd patterns, others
went black, and some would range from OK to totally unusable. Among others.
So there is a chance the graphic processor may be going out; or just the circuitry
that controls the backlight. An inverter may be weak or other circuit to the display
could be wearing out.
http://www.apple.com/retail/geniusbar/
If you have access to an Apple Store with Genius bar, they can perform some kinds
of diagnostic tests there even though the computer is out-of-warranty; that may be
of help to narrow down the cause of the symptoms you've noticed. They may not be
able to repair it, however, at an Apple Store; as it is rather old by today's standard.
An Apple Authorized Service Provider could do repairs and testing on older models
the Apple Store's Genius and other may not be set up to handle due to vintage.
Find an Apple Authorized Service Provider
Visit an Apple Retail Store
There is a country locator page to help find either of the above in regions outside
of the US & Canada, not sure how the above links would work; and it appears my
bookmarks to the country locator page may not be accessible now to post here.
You may be able to get an idea about what kinds of parts support the display
function by name by looking into an iFixit.com repair guide for your iMac series.
Hopefully the parts supporting the display are the reason it is dimming down, as
a graphic processor failure likely would exhibit other behaviors than just dimming.
PS: I see you've added content to your thread after I'd started working on this
& the answer likely is a hardware repair; professional testing is worth the time
and you seem to have at least one other thread on the same topic....
Good luck & happy computing!
edited 2x

Hot spots and Open Browser Window

I have created a site see www.blingbongs.com...
At the bottom right of the screen it says "meet the Crew"
which is a jpeg, with a hotspot over the top. I hae then asigned a
Java action of "Open Browser Window" using the attribute "On Mouse
Click", in the link box there is a #. As ar as I am aware this
should work on all browsers, but it doesn't. We have two machines,
both installed with exactly the same version of I.E6 yet on one of
the machines it is just not working, the browser window doesn't
open and in fact nothing seems to happen. It doen't seem to work on
Firefox either.
I need a reliable open browser window script that doesn't get
blocked - is it the hotspot or the java that is causing this
problem, or is it the combination of the two. Is there another form
of open browser window that we can use, or is the day of a static
html page beforea flash page out!
Is this just another case of Microsft being buggers - please
help - I don't know what to do? :(
Thanks
Pete (Blagging being a programmer :>/

> Java action of
Javascript, please. The two are very different.
> Is this just another case of Microsft being buggers -
please help - I
> don't
> know what to do? :(
It's user error. Please show me your code, and I'll explain.
Murray --- ICQ 71997575
Adobe Community Expert
(If you *MUST* email me, don't LAUGH when you do so!)
==================
http://www.dreamweavermx-templates.com
- Template Triage!
http://www.projectseven.com/go
- DW FAQs, Tutorials & Resources
http://www.dwfaq.com - DW FAQs,
Tutorials & Resources
http://www.macromedia.com/support/search/
- Macromedia (MM) Technotes
==================
"para-pete" <[email protected]> wrote in
message
news:eav2ai$18n$[email protected]..
>I have created a site see www.blingbongs.com...
>
> At the bottom right of the screen it says "meet the
Crew" which is a jpeg,
> with a hotspot over the top. I hae then asigned a Java
action of "Open
> Browser
> Window" using the attribute "On Mouse Click", in the
link box there is a
> #. As
> ar as I am aware this should work on all browsers, but
it doesn't. We have
> two
> machines, both installed with exactly the same version
of I.E6 yet on one
> of
> the machines it is just not working, the browser window
doesn't open and
> in
> fact nothing seems to happen. It doen't seem to work on
Firefox either.
>
> I need a reliable open browser window script that
doesn't get blocked - is
> it
> the hotspot or the java that is causing this problem, or
is it the
> combination
> of the two. Is there another form of open browser window
that we can use,
> or is
> the day of a static html page beforea flash page out!
>
> Is this just another case of Microsft being buggers -
please help - I
> don't
> know what to do? :(
>
> Thanks
> Pete (Blagging being a programmer :>/
>

IMac Screen Dimming

About a week ago my screen started to randomly dim and then get bright again. The auto brightness is turned off. Its very random when it does it, Im worried the screen is starting to going bad or something. I purchansed the computer new at the end of 2011. Its a 27" iMac 2.7 GHz Intel Core i5, Graphics AMD Radeon HD 6770M 512 MB. Is anyone else having this issue? All of my software is up to date.

First, some commentary:
http://news.cnet.com/8301-13579_3-57609897-37/apple-sued-over-alleged-imac-scree n-dimming-issues/
https://discussions.apple.com/message/22938701#22938701
This issue results usually from two things: the brightness settings, or the graphics card. It seems you've already accounted for the brightness settings, so you might want to investigate the latter.

I click on a link or start typing text in a box on a webpage, any page, and the browser window either randomly changes size, reduces & goes to the toolbar, or some other strange random thing occurs. Why is this?

Whenever I am using Firefox, when I am on a webpage (any webpage) & I either click on a link in that page, start typing in a box, click on a button, or click on a tab, the browser window either reduces to the toolbar, or just changes size, usually from full-screen to 2/3 of its size. I reinstalled Firefox (downloaded from the web) after wiping my hard drive because I was having so many problems from my browser constantly crashing, to the computer itself crashing often, to the computer running exceptionally slow. At first everything seemed fine. But then after having opened my computer a few times, a few different windows began to freeze, then that stopped, then this thing with the browser started a few times later after opening it. Now it does it every time I open it. Also, whenever I try to click on a button on other windows on my computer, I get the 'warning' sound, nothing happens, then after a couple more tries, the button works. All of this is just weird. I had antivirus protection on my computer, but it apparently did not catch whatever virus infected my computer, or the damage was already done when it did get it. I thought once the hard drive was wiped, that everything would be ok, but then these weird things began to start up, and now I am wondering.... Of course, it could also be something wrong with the browser, too. I've also had some trouble getting my printer to working again, but I've managed to solve that problem.

I have had a similar problem with my system. I just recently (within a week of this post) built a brand new desktop. I installed Windows 7 64-bit Home and had a clean install, no problems. Using IE downloaded an anti-virus program, and then, because it was the latest version, downloaded and installed Firefox 4.0. As I began to search the internet for other programs to install after about maybe 10-15 minutes my computer crashes. Blank screen (yet monitor was still receiving a signal from computer) and completely frozen (couldn't even change the caps and num lock on keyboard). I thought I perhaps forgot to reboot after an update so I did a manual reboot and it started up fine.
When ever I got on the internet (still using firefox) it would crash after anywhere between 5-15 minutes. Since I've had good experience with FF in the past I thought it must be either the drivers or a hardware problem. So in-between crashes I updated all the drivers. Still had the same problem. Took the computer to a friend who knows more about computers than I do, made sure all the drivers were updated, same problem. We thought that it might be a hardware problem (bad video card, chipset, overheating issues, etc.), but after my friend played around with my computer for a day he found that when he didn't start FF at all it worked fine, even after watching a movie, or going through a playlist on Youtube.
At the time of this posting I'm going to try to uninstall FF 4.0 and download and install FF 3.6.16 which is currently on my laptop and works like a dream. Hopefully that will do the trick, because I love using FF and would hate to have to switch to another browser. Hopefully Mozilla will work out the kinks with FF 4 so I can continue to use it.
I apologize for the lengthy post. Any feedback would be appreciated, but is not necessary. I will try and post back after I try FF 3.16.6.

Is a Windows registry error responsible for Firefox opening two browser windows whenever I use a hyperlink from a Word file?

Whenever I use a hyperlink from an MS Word document, Firefox opens two windows instead of one. The first window is the one I need. The second contains a message that the page could not be found and the address bar contains the URL appended with "Firefoxhtml/shell/open/command".
This problem is similar but NOT identical to one in MozillaZine headed "Windows error opening internet shortcut or local HTML file - Firefox". But none of the solutions in that article work for my problem: I've disabled all extensions but that hasn't helped. I've tried editing file types so that the DDE is removed (I'm not a teccie so have no idea what that means), but after following the instructions to the letter it doesn't seem to remove the DDE. Also I read that removing the DDE is not a good idea for people like me who need to open numerous firefox browser windows at one time. Furthermore, the MozzilaZine article refers only to problems opening a URL link in a MS Outlook email when Firefox is NOT running. My problem concerns the opening of URL links in MS Word when Firefox IS running!
I've run countless different virus programmes, rootkit checkers etc but they all come up blank. However, I did come across guidance on this website: http://antivirus.about.com/od/windowsbasics/a/shellopen.htm which suggests that something may have altered the shell open command for two registry keys used by Firefox.
# HKEY_CLASSES_ROOT\htafile\shell\open\command
# HKEY_CLASSES_ROOT\htfile\shell\open\command
The default value for each of these should be "%1" %*. But on my user, the default value reads:
(for htafile) c:\windows\system32\mshta.exe "%1"%*
(for htfile) c:\programfiles\windowsNT\hypertrm.exe"%1
What should the value be for these two files?
Can anyone sort this for me please? Bear in mind I'm not a teccie!

Do a malware check with a few malware scan programs.<br />
You need to use all programs because each detects different malware.<br />
Make sure that you update each program to get the latest version of the database.
*http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
*http://www.superantispyware.com/ - SuperAntispyware
*http://www.safer-networking.org/en/index.html - Spybot Search & Destroy
*http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free
*http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page
See also "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked and [[Searches are redirected to another site]]

Imac screen dims and two browser windows flicker.

Similar Messages

Maybe you are looking for