Screen goes black for no reason

Hi first post, My iMac intel seems to shut down intermittently, when it happens the screen goes black but you can still hear the fans running the white light is not on and there is no response from the keys or mouse so I have to hold the power button to turn it off.
Then when I turn it back on again you hear the fans start up, the light stays on and the screen stays black and would stay like that for life if I left it.
If I start it up 2-3 min after I have shut it down, it starts fine and will be ok for 5 min and then process happens again.
This can happen alot and some times will happen after 5 days of being ok and working perfectly.
Very frustrating! anyone els with this problem?
iMac intel 20"   Mac OS X (10.4.8)  

There have been similar reports. Usually they needed to take it for a repair that was covered under warranty.
I suggest you plan for the worst and back up everything of critical importance. Call Apple for support, but do be prepared to erase your hard drive and reinstall your OS. If the problem then persists before you add any additional software or connect any other hardware, you've proven it's some hardware issue and can have Apple immediately fix it under warranty with no other effort on your part. Best of luck.
Message was edited by: myhighway

Similar Messages

  • The screen goes black for about 1/2 a second.

    The screen goes black for about 1/2 a second. Is it time to panic?

    I don't see any common link. Sometimes it is just one 'instance', sometimes it is several in a row. But there doesn't seem (to me) to be any sort of common circumstances. (Other than that I am using the computer!!)

  • HT1338 The screen on My mac book pro goes black for no reason if I use the f1 and f2 keys it comes back

    My screen on my mac book pro goes blank for no reason when I use f1 and f2 keys it comes back

    You can blank the monitor using those keys, that's likely what you did, it's a feature.

  • Screen goes black for 3 seconds in premiere CS5 every time I click

    This is the first time I run Premiere CS5... On a fresh system install.
    I suspect it's not playing well with my video card, a Radeon HD 4870 with 1GB Ram... Very standard stuff.  I am running window 7 64 bit with 12 gb RAM, a week old build. I have all the updates and latest drivers, sigh. After Effects CS5 runs fine, Maya 2010 runs fine, Quicktime runs fine... What gives.
    Here's what happens: I only need to launch Premiere, right away I get the problem. The screen goes black 3 seconds before the prompt to create a new project. Once I create the project, the application workspace comes in, but if I click any menu, drag a tool window (whatever they are called), the screen goes black 3 seconds then comes back. Its basically impossible to work...Huge drag.
    Update:
    The problem stopped after I went into the 'device settings' in preferences and set the device to 'none'....When I clicked on the device settings panel, my monitor went black, and there was a 'no signal' warning that came up, as if the DVI-D  signal was dead. I was able to restore the signal by hitting ctrl-alt-del which switched me out of Premiere onto the desktop. Clearly, there is some issue with video. I switched back into Premiere and was able then to set to no devices.
    I'm not doing any capture at the moment, but I can only pray that it's some sort of bug related to not having a device connected? I plan on bringing footage from a RED in the next month. I upgraded to CS5 specifically so that I could use more than 4 gigs of RAM and for the new features.

    THank you for sending this.
    I followed the benchmark directions, and I get an error at the final step
    when I run the script:
    line 99
    Error: path not found
    I tried for an hour different things, namely to re run the whole test
    procedure, deleting the output files, etc... he script is looking for
    something in the preview files that it is not finding. I think the procedure
    was written for a previous version, because the metadata settings are
    different in my version of AME, and I don't know how much that affects it.
    Also, AME increments the file names when it renders them so that I did not
    get the right output file names at the first render. I had to turn off
    incrementing and manually name each clip before rendering. The vb scricpt
    looks for these names, so I understand it is important. I can't figure out,
    however, what the script is looking for in the preview folder and not
    finding.
    After spending almost two hours trying to troubleshoot the script, I gave
    up. I can tell you tho that it takes about 6-7 minutes on my box to encode
    all the videos.

  • Macbook screen goes black for a few seconds then reappears fine

    The last two days my macbook screen has gone black for a few seconds then reappeared a few seconds later. Its as if it goes to sleep for a few seconds. The two times it has done this it has been charging. I have checked for hotspots but i have not activated any. I only bought the macbook air two months ago and have been really careful with it so i am confused.
    any help? Please?
    Thanks people.

    Hello @bobbiy58,
    I understand that your HP ENVY Recline 27-k150xt TouchSmart All-in-One CTO Desktop PC is going black for few seconds and coming back. I need to ask has this just started? Like since you connected your X-box? If so have you tried disconnecting the X-box to see if it stops?
    Please re-post and let me know. Thank you for posting on the HP Forums. Have a great day!
    Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
    Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
    Dunidar
    I work on behalf of HP
    Find out a bit more about me by checking out my profile!
    "Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

  • G470:: screen goes black for sometime (10-15 seconds)

    I have a lenovo g470 laptop bought it a couple of months ago it came with preinstalled windows 7 64 bit.
    It worked perfectly for a month but nowadays it seems like there is some trouble while booting my windows.
    when start my windows windows 7 logo appears normally but after that screen goes blank for approx 15-20 seconds and then logon screen appears and after that everything works normally.

    could be windows issue.
    start-up your computer and press f8 to load "last known good configuration" when you see lenovo logo at start-up.

  • Firefox will not launch. The screen goes black for several seconds, then returns to the launcher drawer.

    Installed Fennec 4.0b2 on my Acer Liquid running Android 2.2. When I tried to launch application, the screen goes to black, with a grey bar at the top with the word "firefox" within. This screen persists for several seconds, before the returning to the previous screen.

    Thanks for the report. This is a known bug that only affects Acer Liquid phones. We're working on it, but we don't have a fix ready yet. For details, see https://bugzilla.mozilla.org/show_bug.cgi?id=606194

  • I have a macbook pro and the screen goes black for a few seconds and then it is fine..

    it keeps doing this constantly. Goes black and then is fine. I tried to do the apple hardware test and it doesn't work. Ever since i updated the software on it it's been giving me problems. What do i do?

    Nellinaaaa wrote:
    13" mid 2012!
    If you  have AppleCare, call them.  Let them deal w/it.
    I tried to do the apple hardware test and it doesn't work.
    Meaning?  Please provide details.

  • The calendar icon on my iphone 6 shows that I have 2 items in my inbox but when I click on it it does not open the inbox but goes black for a second and then returns to iphone

    The calendar icon on my iphone 6 shows that I have 2 items in my inbox but when I click on it it takes me to the full year calendar, at bottom of screen it says Inbox (2) - when i click on that the screen goes black for a second and then defaults back to the home screen. Have tried everything, rebooting, reinstalling, refreshing - very frustrating - can someone help?
    Thanks

    Try This...
    Close All Open Apps... Sign Out of your Account...  Perform a Reset... Try again...
    Reset  ( No Data will be Lost )
    Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears. Release the Buttons.
    http://support.apple.com/kb/ht1430

  • TS1702 I have a iphone 3gs and everytime I go to open facebook it crashes and the screen goes black and them goes to homescreen. Have reinstalled this app loads of time but it seems to be getting worse

    I have a phone 3g and everytime I go to open facebook or bejewelled blitz it will not load. It crashes and then the screen goes black for a few seconds before going back to the home screen. I have uninstalled this app and reinstalled it on a few occassions but now it will not even go the facebook homepage. It sometimes also happens with other app.

    The problem corrected itself,....i tried to delete the post but could not do it.

  • My mbp freezes when i lift the lid up, the screen goes black with the mouse on it,

    my macbook pro freezes when i lift the lid up, the screen goes black for about a minute before coming up for me to log on
    why is this happening

    Hello,
    Please see What userid & password do I need to install Flash Player?.
    Maria

  • I have a first gen iPad, 64g, and for no apparent reason, the screen goes black and whatever app I am using is closed on me. It seems to be happening more and more frequently, especially when loading a blog, or trying to watch a YouTube video. I try to o

    I have a  iPad, 32g, and for no apparent reason, the screen goes black and whatever app I am using is closed on me. It seems to be happening more and more frequently, especially when loading apps, or trying to watch a YouTube video. I try to open safari or youtube again and it will often crash several times before it may or may not decide to load for me. It is extremely annoying and getting to the point where I can not use it

    Standard troubleshooting steps in order are as follows:
    Power the iPad off and on.
    An iPad reset, which is done by pressing and holding the home button and the sleep/wake or on/off button simultaneously until you see the Apple logo and then release.
    Restore your iPad with iTunes from your iPad's backup.
    Restore your iPad with iTunes as a new iPad or not from your iPad's backup.
    If no change after the last step, your iPad has a hardware problem.

  • When I turn on my iPhone 4S the apple logo pops up for a split second then the screen goes black but the phone itselfs boots up just fine???

    I tried replacing the screen with no luck. The same thing happened with the new screen. I replaced the backlight coil and the backlight ic and still have the issue. I don't know what else could be the problem. If the battery is completely dead and I plug it in the "charging battery" symbol shows just fine during the entire time it is charging, but as soon as it starts to boot up the apple logo shows for a split second then the screen goes black. The rest of the phone still boots up just fine. I can use SIRI, press the lock button like I'm about to use my phone and slide my thumb across where the "slide to unlock" would normally be and it will make the unlock noise just no picture display. I am pretty tech savvy when it comes to repairs and all of the connections look fine, replaced backlight coil and ic, replaced LCD/digitizer, tried a restore, tried a DFU restore, multiple hard resets, but I am at a loss as to where to go from here. I had dropped the phone and put a minor crack in the screen but the phone worked just fine for a couple months after before this started to happen. The phone is still under apple warranty but apple won't cover it because Apple is stating that it is "caused by the crack in the screen." But being a repair technician I know that is not the case... Good one apple. So I took it upon myself to try to determine the REAL problem. Anyone with a little more knowledge have any ideas? Any suggestions are appreciated!!

    Yes, I understand that. But The screen issue is not a result of user damage. The phone was not dropped when the screen got cracked. My daughter was standing in a chair at the table and dropped one of her toys onto the bottom of the phone and cracked it right by the home button. (Nowhere near the LCD/digitizer flex cables, connections, or logic board components) then a few months later my phone had died, I plugged it in, it showed it was charging, then Apple logo disappeared and screen didn't work. AFTER contacting Apple about the issue and them telling me that it "is a result of the very minimal crack to the sheet of glass that has no relation to the LCD or Digitizer and that the warranty does not cover it I had taken it upon myself to change the LCD/digitizer to no avail, as well as backlight ic and backlight coil to no avail. But how do I go about letting Apple know that it is in fact NOT due to the cracked screen nor is it due to the flex cable connections? I can't. So the lady that works the call center phones  trying to "convince" me that she knows what she is talking about and "convince" me that it is from the cracked screen I have to take her word because I can't show Apple that its not because of that without paying them $199 to fix the screen in which case they will just send me a new phone rather than fix the faulty hardware under warranty.

  • Screen goes black, shut the lid for a few minutes, open the lid the turn on chime comes on and the screen comes back to life. The computer itself has continued to update just no screen. After a few minutes goes black again. Is logic board going bad?

    Screen goes black, shut the lid for a few minutes, open the lid the turn on chime comes on and the screen comes back to life. The computer itself has continued to update just no screen. After a few minutes goes black again. Is logic board going bad or graphic card issue? Trying to decide if computer is worth repairing as it was made in 2007.

    It does sound like you might have a faulty video connection. See if you can make a Genius Bar appointment at your local Apple Store.

  • Trouble with mobile site. Displays for a second then screen goes black.

    Trouble with mobile site. Displays for a second then screen goes black. Using safari, 4s on Verizon. Example: m.mlb.com/lad/

    I hadn't checked the site since January or so, when it worked. It might be related to the Opening Weekend skin they have on the site, but for me, it shows the top part of the page for 3 seconds while it's loading (scrolling down is impossible) and then all of a sudden it turns black, showing nothing. It's that way for every MLB mobile site.
    At first:
    Two seconds later:
    I noticed this on 4/7/12. Does anyone NOT have this problem?
    Matt

Maybe you are looking for