Why does my screen goes from bright (normal) to dim?

I hope someone can help.  My screen keeps going from bright (normal) to dim then back to normal .

It could be a short in your power adaptor cable, break or crack in the power jack that the power adaptor plugs into, a failing power inverter (small long thin circuit board in the screen that converts DC back to AC) or some unusual setting in the power setting for the laptop. I have no idea what that last one actual is but I am guessing. Look at the notebook and note which lights are on when it is bright. See if the external power light goes out when it goes dim. This happens when you go from plugged power to battery.  Try to run the notebook with the battery out of the system for a day and see if you still have the problem. Maybe the battery is starting to short out.
Reminder: Please select the "Accept as Solution" button on the post that best answers your question. Also, you may click on the white star in the "Kudos" button for any helpful post to give that person a quick thanks. These feedback tools help keep our community active, so you receive better answers faster.

Similar Messages

  • Why does my screen going pink?

    screen goes pink every now & again. Need to shut down for 5 minutes then all is fine.

    Bring your phone in to Apple for evaluation. 

  • Why does Calendar keep reverting from full screen each time I exit the app?

    I'm using a 2014 Macbook Air. It's running Yosemite.
    Why does Calendar keep reverting from full screen each time I exit the app?
    On my older Macbook at work, calendar stays full screen whether I exit the app or restart the computer (similar to Mail - which is staying in full screen on both computers).
    Please help me adjust settings so I don't have to keep putting Calendar into full screen.
    Thanks!

    HI Thanks so much! It fixed porblem (for the moment) by reinstalling PS6 and NOT installing the 13.03 update which, although said it was performance related, probaly had  that trial messge embeded in it. So just DON"T install update 13.03 till adobe gets it's sea legs and stops puking up this message over and over. aloha, U
    Curt Y wrote:
    Did you update recently?  There is a bug in that causing your problelm.  See this thread.  http://forums.adobe.com/thread/1114727?tstart=0

  • Why does the screen on my iPad mini jump around?  Apps open and close, I can't get back to the home screen.  Is my mini possessed?

    Why does the screen on my iPad mini start jumping--larger, smaller--can't close apps.  I reboot and still it happens.  Any suggestions?

    If the unit has NEVER been jailbroke, first try a system reset.  It cures many ills and it's quick, easy and harmless...  Hold down the on/off switch and the Home button simultaneously until you see the Apple logo.  Ignore the "Slide to power off" text if it appears.  You will not lose any apps, data, music, movies, settings, etc.
    If the Reset doesn't work, try a Restore.  Note that it's nowhere near as quick as a Reset.  It could take well over an hour!  Connect via cable to the computer that you use for sync.  From iTunes, select the iPad/iPod and then select the Summary tab.  Follow the on-screen directions for Restore and be sure to say "yes" to the backup.  You will be warned that all data (apps, music, movies, etc.) will be erased but, as the Restore finishes, you will be asked if you wish the contents of the backup to be copied to the iPad/iPod.  Again, say "yes."
    At the end of the basic Restore, you will be asked if you wish to sync the iPad/iPod.  As before, say "yes."  Note that that sync selection will disappear and the Restore will end if you do not respond within a reasonable time.  If that happens, only the apps that are part of the IOS will appear on your device.  Corrective action is simple -  choose manual "Sync" from the bottom right of iTunes.
    If you're unable to do the Restore, go into Recovery Mode per the instructions here.  You WILL lose all of your data (game scores, etc,) but, for the most part, you can redownload apps and music without being charged again.  Also, if you have IOS-7, read this.

  • Why does an email sent from an iPad or iPhone to ms outlook appear with attachments? Example signatures tend to be broken down into a series of unwanted attachments!

    Why does an email sent from an iPad or iPhone to ms outlook appear with attachments? Example: signatures at the bottom of the mail tend to be broken down into a series of unwanted attachments!

    It worked for me. I took a picture with the iPhone's camera. Then opened the Photos app and selected the picture, and emailed it from one of my IMAP accounts to my gmail (also IMAP) account. When it showed up in the gmail inbox (on my iPhone), I forwarded it to my yahoo mail account (choosing the "inlcude attachments" option). When that showed up on my iPhone's yahoo inbox, the picture was there just as it should be.
    So I guess the next thing would be to try it with non-iPhone pictures to see if it is a problem with image size or something. I have some 6-megapixel images in iPhoto I can try (taken as RAW/DEC format pictures with my dSLR).
    Just tried it sending a Photo from my computer's iPhoto library - picture is 728KB, 2272x1704 jpeg. I emailed it to my gmail account, and it showed up on the iPhone just fine. Then I forwarded that to my yahoo account and again, it showed up just fine on both the iPhone and reading my yahoo mail via the web page.
    Don't know what to say - I don't mean this to be just another "works for me" post. I was hoping to see something maybe depending on the size and origin of the picture.
    By the way, my 3GS shipped with 3.0.1 on it, and I've updated it via iTunes normally to 3.1.1 and currently 3.1.2. Sorry I don't have anything constructive to add.

  • My screen goes from large to small in safari. also disappears than comes back. goes to desktop and then comes back.

    I am having an issue when using safari. My screen goes from really large to normal. The screen also disappears and I get to the desktop with the small screens on top. Then I get the dock (I believe) with the calendar, time, weather, ect. Mouse goes crazy whether using the track thing or a regular mouse. Doesn't happen all the time but most of the time. Also the computer feels really hot to the touch.

    From the Safari menu bar, select
              Safari ▹ Preferences... ▹ Extensions
    Turn all extensions OFF and test. If the problem is resolved, turn extensions back ON and then disable them one or a few at a time until you find the culprit.

  • Why does my screen minimize every time I push the left shift button?

    Why does my screen minimize to left top corner every time I push my left shift button?

    I would try going into your System Preferences and reset your keyboard settings to the default setting. It is possible that somehow your shift key got bound to something it shouldnt have been.

  • Why does it shut down from programs

    Why does it close out from programs

    In the mean time try this:
    1. Double-click the Home button to see all Inactive Apps in Task Bar
    2. Hold the Apps down for a second or two until you see the minus sign
    3. Tap the minus sign to close App
    4. Tap center of screen to return to Home Screen
    5. Reset iPad. Hold the Sleep and Home button down for about 10 second until you see the Apple logo. Ignore the red slider

  • Why does my screen lock up

    why does my screen lock up on my i mac, can't move the arrow use any keys. have to restart it

    If you have more than one user account, these instructions must be carried out as an administrator.
    Launch the Console application in any of the following ways:
    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
    ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
    ☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
    Step 1
    Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
    View ▹ Show Log List
    from the menu bar.
    Enter "BOOT_TIME" (without the quotes) in the search box. Note the timestamps of those log messages, which refer to the times when the system was booted. Now clear the search box and scroll back in the log to the last boot time when you had the problem. Select the messages logged before the boot, while the system was unresponsive or was failing to shut down. Copy them to the Clipboard (command-C). Paste into a reply to this message (command-V). Please include the BOOT_TIME message at the end of the log extract.
    If there are runs of repeated messages, post only one example of each. Don’t post many repetitions of the same message.
    When posting a log extract, be selective. In most cases, a few dozen lines are more than enough.
    Please do not indiscriminately dump thousands of lines from the log into this discussion.
    Important: Some private information, such as your name, may appear in the log. Anonymize before posting.
    Step 2
    Still in Console, look under System Diagnostic Reports for crash or panic logs, and post the entire contents of the most recent one, if any. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if present (it may not be.) Please don’t post shutdownStall, spin, or hang logs — they're very long and not helpful.

  • Installed the update tonight and now my phone (Lumia 928) won't power up.  I've tried a soft reset, but the screen goes from the Nokia logo to a red Verizon screen to a black screen.  What's wrong and how do I fix it?  Help!

    Installed the update tonight and now my phone (Lumia 928) won't power up.  I've tried a soft reset, but the screen goes from the Nokia logo to a red Verizon screen to a black screen.  Tried it 10 times with the same result.  What's wrong and how do I fix it?  Help!

        Oh no Mr.Ected!
    I can see if we can get your phone back on! I understand how important it is to have a phone. Have you tried this to see if we can get it back on? http://vz.to/1DZhteH . If it is still goes to a red Verizon screen and then to black we might need to do a master reset. While the phone is off try this:http://vz.to/1DZhXkU Be mindful this is the last resort because it will erase everything on the phone. If you have done back up assistant in the past you will be able to get you contacts back. Please let me know if you need any more help.
    AmberF_VZW
    Follow us on Twitter @VZWSupport

  • Why does my screen turn black when I play iTunes while working on iPhoto?

    Why does my screen turn black when I play ITunes while working on iPhoto? I can't click off of the screen but get a message that reads Shut down computer by pressing button in back then turn computer back on by pushing button in back. That's followed by Chinese letters (which I cannot read). I have had other problems when playing iTunes (actually, a radio station on the Internet) while working on  iPhoto. Before, I got a window that would pop up and tell me I had no disk space available, that I would have to quit applications that were open. Not many were open.
    It would be nice if I could solve this problem once and for all.
    Thanks in advance for all the suggestions. I truly appreciate your help.
    Jan

    That was easy. Thanks. Jan
    Interval Since Last Panic Report:  1949305 sec
    Panics Since Last Report:          1
    Thu Feb  6 15:29:32 2014
    panic(cpu 1 caller 0xffffff80002c4794): Kernel trap at 0xffffff7f81d89ff3, type 14=page fault, registers:
    CR0: 0x0000000080010033, CR2: 0xffffff7acd4a2a7c, CR3: 0x0000000085d3b000, CR4: 0x0000000000000660
    RAX: 0xffffffff4bffff56, RBX: 0x0000000000000000, RCX: 0x0000000000000001, RDX: 0x0000000000000000
    RSP: 0xffffff807867b7c0, RBP: 0xffffff807867b800, RSI: 0xffffff7acd4a2a7c, RDI: 0xffffff8065292000
    R8:  0x0000000000000001, R9:  0x0000000000000000, R10: 0xffffff7f81d44200, R11: 0xffffff800f8b45e8
    R12: 0xffffff8065292000, R13: 0xffffff807867b860, R14: 0x0000000000000001, R15: 0xffffff7acd4a2a7c
    RFL: 0x0000000000010286, RIP: 0xffffff7f81d89ff3, CS:  0x0000000000000008, SS:  0x0000000000000010
    CR2: 0xffffff7acd4a2a7c, Error code: 0x0000000000000000, Faulting CPU: 0x1
    Backtrace (CPU 1), Frame : Return Address
    0xffffff807867b470 : 0xffffff8000220792
    0xffffff807867b4f0 : 0xffffff80002c4794
    0xffffff807867b6a0 : 0xffffff80002da55d
    0xffffff807867b6c0 : 0xffffff7f81d89ff3
    0xffffff807867b800 : 0xffffff7f81d8a694
    0xffffff807867b890 : 0xffffff7f81d8b4ed
    0xffffff807867b8d0 : 0xffffff7f81d472a1
    0xffffff807867ba40 : 0xffffff7f81d8bd6d
    0xffffff807867bb00 : 0xffffff7f81d44346
    0xffffff807867bb60 : 0xffffff8000655f3e
    0xffffff807867bb80 : 0xffffff800065681a
    0xffffff807867bbe0 : 0xffffff8000656fbb
    0xffffff807867bd20 : 0xffffff80002a3f08
    0xffffff807867be20 : 0xffffff8000223096
    0xffffff807867be50 : 0xffffff80002148a9
    0xffffff807867beb0 : 0xffffff800021bbd8
    0xffffff807867bf10 : 0xffffff80002af140
    0xffffff807867bfb0 : 0xffffff80002dab5e
          Kernel Extensions in backtrace:
             com.apple.GeForce(7.3.2)[7E1D7726-416F-3716-ACCB-E1E276E35002]@0xffffff7f81d390 00->0xffffff7f81dfbfff
                dependency: com.apple.NVDAResman(7.3.2)[97284661-2629-379E-B86B-D388618E8C30]@0xffffff7f808 b0000
                dependency: com.apple.iokit.IONDRVSupport(2.3.4)[7C8672C4-8B0D-3CCF-A79A-23C62E90F895]@0xff ffff7f8089e000
                dependency: com.apple.iokit.IOPCIFamily(2.7)[5C23D598-58B2-3204-BC03-BC3C0F00BD32]@0xffffff 7f8082b000
                dependency: com.apple.iokit.IOGraphicsFamily(2.3.4)[D0A1F6BD-E66E-3DD8-9913-A3AB8746F422]@0 xffffff7f80865000
    BSD process name corresponding to current thread: iPhoto
    Mac OS version:
    11G63
    Kernel version:
    Darwin Kernel Version 11.4.2: Thu Aug 23 16:25:48 PDT 2012; root:xnu-1699.32.7~1/RELEASE_X86_64
    Kernel UUID: FF3BB088-60A4-349C-92EA-CA649C698CE5
    System model name: iMac10,1 (Mac-F2268CC8)
    System uptime in nanoseconds: 11526391261403
    last loaded kext at 23020191300: com.apple.driver.AppleHWSensor    1.9.5d0 (addr 0xffffff7f8234b000, size 28672)
    last unloaded kext at 522057763087: com.apple.driver.AppleFileSystemDriver    13 (addr 0xffffff7f8254c000, size 12288)
    loaded kexts:
    com.apple.driver.AppleHWSensor    1.9.5d0
    com.apple.driver.AppleBluetoothMultitouch    70.12
    com.apple.filesystems.autofs    3.0
    com.apple.iokit.IOBluetoothSerialManager    4.0.8f17
    com.apple.driver.AudioAUUC    1.59
    com.apple.driver.AppleMikeyHIDDriver    122
    com.apple.driver.AppleHDA    2.2.5a5
    com.apple.driver.AppleUpstreamUserClient    3.5.9
    com.apple.driver.AppleMikeyDriver    2.2.5a5
    com.apple.driver.AppleBacklight    170.2.2
    com.apple.driver.AppleMCCSControl    1.0.33
    com.apple.driver.AppleLPC    1.6.0
    com.apple.driver.AGPM    100.12.75
    com.apple.iokit.IOUserEthernet    1.0.0d1
    com.apple.Dont_Steal_Mac_OS_X    7.0.0
    com.apple.driver.AudioIPCDriver    1.2.3
    com.apple.driver.ApplePolicyControl    3.1.33
    com.apple.GeForce    7.3.2
    com.apple.driver.ACPI_SMC_PlatformPlugin    5.0.0d8
    com.apple.driver.BroadcomUSBBluetoothHCIController    4.0.8f17
    com.apple.driver.AppleUSBCardReader    3.0.6
    com.apple.driver.AppleIRController    312
    com.apple.AppleFSCompression.AppleFSCompressionTypeDataless    1.0.0d1
    com.apple.AppleFSCompression.AppleFSCompressionTypeZlib    1.0.0d1
    com.apple.BootCache    33
    com.apple.iokit.SCSITaskUserClient    3.2.1
    com.apple.iokit.IOAHCISerialATAPI    2.0.3
    com.apple.driver.XsanFilter    404
    com.apple.iokit.IOAHCIBlockStorage    2.1.0
    com.apple.driver.AppleRTC    1.5
    com.apple.driver.AppleFWOHCI    4.9.0
    com.apple.driver.AirPort.Atheros40    505.67.1
    com.apple.driver.AppleAHCIPort    2.3.1
    com.apple.nvenet    2.0.17
    com.apple.driver.AppleUSBHub    5.1.0
    com.apple.driver.AppleUSBEHCI    5.1.0
    com.apple.driver.AppleUSBOHCI    5.1.0
    com.apple.driver.AppleEFINVRAM    1.6.1
    com.apple.driver.AppleHPET    1.7
    com.apple.driver.AppleACPIButtons    1.5
    com.apple.driver.AppleSMBIOS    1.9
    com.apple.driver.AppleACPIEC    1.5
    com.apple.driver.AppleAPIC    1.6
    com.apple.driver.AppleIntelCPUPowerManagementClient    195.0.0
    com.apple.nke.applicationfirewall    3.2.30
    com.apple.security.quarantine    1.4
    com.apple.security.TMSafetyNet    8
    com.apple.driver.AppleIntelCPUPowerManagement    195.0.0
    com.apple.driver.AppleMultitouchDriver    231.4
    com.apple.driver.IOBluetoothHIDDriver    4.0.8f17
    com.apple.kext.triggers    1.0
    com.apple.iokit.IOSerialFamily    10.0.5
    com.apple.driver.DspFuncLib    2.2.5a5
    com.apple.driver.AppleBacklightExpert    1.0.4
    com.apple.driver.AppleSMBusController    1.0.10d0
    com.apple.driver.AppleSMBusPCI    1.0.10d0
    com.apple.iokit.IOSurface    80.0.2
    com.apple.iokit.IOAudioFamily    1.8.6fc18
    com.apple.kext.OSvKernDSPLib    1.3
    com.apple.driver.AppleGraphicsControl    3.1.33
    com.apple.driver.AppleHDAController    2.2.5a5
    com.apple.iokit.IOHDAFamily    2.2.5a5
    com.apple.nvidia.nv50hal    7.3.2
    com.apple.NVDAResman    7.3.2
    com.apple.iokit.IONDRVSupport    2.3.4
    com.apple.iokit.IOGraphicsFamily    2.3.4
    com.apple.iokit.IOFireWireIP    2.2.5
    com.apple.driver.IOPlatformPluginLegacy    5.0.0d8
    com.apple.driver.IOPlatformPluginFamily    5.1.1d6
    com.apple.driver.AppleSMC    3.1.3d10
    com.apple.driver.AppleUSBBluetoothHCIController    4.0.8f17
    com.apple.iokit.IOBluetoothFamily    4.0.8f17
    com.apple.iokit.IOSCSIBlockCommandsDevice    3.2.1
    com.apple.iokit.IOUSBMassStorageClass    3.0.3
    com.apple.iokit.IOUSBHIDDriver    5.0.0
    com.apple.driver.AppleUSBMergeNub    5.1.0
    com.apple.driver.AppleUSBComposite    5.0.0
    com.apple.iokit.IOSCSIMultimediaCommandsDevice    3.2.1
    com.apple.iokit.IOBDStorageFamily    1.7
    com.apple.iokit.IODVDStorageFamily    1.7.1
    com.apple.iokit.IOCDStorageFamily    1.7.1
    com.apple.iokit.IOSCSIArchitectureModelFamily    3.2.1
    com.apple.iokit.IOFireWireFamily    4.4.8
    com.apple.iokit.IO80211Family    420.3
    com.apple.iokit.IOAHCIFamily    2.0.8
    com.apple.iokit.IONetworkingFamily    2.1
    com.apple.iokit.IOUSBUserClient    5.0.0
    com.apple.iokit.IOUSBFamily    5.1.0
    com.apple.driver.NVSMU    2.2.9
    com.apple.iokit.IOHIDFamily    1.7.1
    com.apple.driver.AppleEFIRuntime    1.6.1
    com.apple.iokit.IOSMBusFamily    1.1
    com.apple.security.sandbox    177.11
    com.apple.kext.AppleMatch    1.0.0d1
    com.apple.driver.DiskImages    331.7
    com.apple.iokit.IOStorageFamily    1.7.2
    com.apple.driver.AppleKeyStore    28.18
    com.apple.driver.AppleACPIPlatform    1.5
    com.apple.iokit.IOPCIFamily    2.7
    com.apple.iokit.IOACPIFamily    1.4
    System Profile:
    Model: iMac10,1, BootROM IM101.00CC.B00, 2 processors, Intel Core 2 Duo, 3.06 GHz, 4 GB, SMC 1.52f9
    Graphics: NVIDIA GeForce 9400, NVIDIA GeForce 9400, PCI, 256 MB
    Memory Module: BANK 0/DIMM1, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334548312D4346382020
    Memory Module: BANK 1/DIMM1, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334548312D4346382020
    AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x8F), Atheros 9280: 4.0.67.5-P2P
    Bluetooth: Version 4.0.8f17, 2 service, 18 devices, 1 incoming serial ports
    Serial ATA Device: ST3500418ASQ, 500.11 GB
    Serial ATA Device: HL-DT-ST DVDRW  GA11N
    USB Device: Built-in iSight, apple_vendor_id, 0x8502, 0x24400000 / 2
    USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0x26500000 / 3
    USB Device: USB2.0 Hub, 0x05e3  (Genesys Logic, Inc.), 0x0608, 0x26200000 / 2
    USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x04500000 / 2
    USB Device: Hub in Apple Extended USB Keyboard, apple_vendor_id, 0x1003, 0x06400000 / 3
    USB Device: Apple Extended USB Keyboard, apple_vendor_id, 0x020b, 0x06430000 / 4
    USB Device: BRCM2046 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0x06100000 / 2
    USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8215, 0x06110000 / 6

  • Why does my screen turn blue and freeze every time i try to plug in my 'mini display to hdmi' cable into my thunderbolt port in order to use an external monitor?

    why does my screen turn blue and freeze every time i try to plug in my 'mini display to hdmi' cable into my thunderbolt port in order to use an external monitor? it only works if i turn the computer on with it already plugged in.

    Do you have gfxCardStatus installed?  Is your monitor set to "Integrated" or "Discrete".  You want it set to Discrete to drive the external HDMI display.
    Try resetting the PRAM and SMC
    <About NVRAM and PRAM>
    <Intel-based Macs: Resetting the System Management Controller (SMC)>
    Are you sure you have a good miniDisplayPort to HDMI cable?
    Do you have another HDMI display you can test against (your neighbor's HDMI capable TV).
    Do you have friend that can test the cable using their Mac and maybe their TV or a monitor that has HDMI input.

  • Why does my screen come up dark when I press the camera icon?

    Why does my screen come up dark when I press the Camera icon?  I can neither take pictures nor look at the photos I have saved.

    Doulbe tab the home key to see the task bar.  Touch and hold any of those icons until they jiggle, then delete them by touching the minus sign.   Then reboot the pad by holding the sleep and home buttons until the apple logo appears.  Ignore the red slider.
    You either have another app open that is using the camera, or you just have too much stuff in memory.  The reset process should clear it up.

  • Why does my screen flicker every 10-15 seconds?

    Why does my screen flicker every 10-15 seconds?

    like a blinking? do you have the late 08 MBP?
    if so go to system, energy saver, and select better performance. Your screen should be flicker free.

  • Why does my screen have a circle with contact name

    why does my screen have a circle with contact name

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

Maybe you are looking for