HT3964 I was working when the iMac just went black.  Will not respond now

I have checked power and it is OK.  The iMac just looks like it is off.  Power button does nothing.

If it doesn't make any noises or has any video at all this points to a failed power supply. Do you get any sounds such as fans, startup tones, etc...?

Similar Messages

  • P Pavilion dv5 1004nr just went black, will not turn on.

    HP Pavilion dv5 1004nr just went black, will not turn on. Just flashes three times when start is pushed.

    Hi @RKJohansen, 
    Welcome to the HP Forums!
    It is a terrific place to find answers.
    For you to have the best experience in the HP forum I would like to direct your attention to the HP Forums Guide Learn How to Post and More
    I grasp that when you power on the notebook it flashes 3 times but does not boot to Windows.  Here is a link to Computer does not start and the LEDs blink or the computer beeps that will help you determine the cause.  
    Here is a link to the  HP Pavilion dv5 Entertainment PC Maintenance and Service Guide
    which will provide you the unnecessary part numbers if you should require any replacement parts.
    Good Luck !
    Sparkles1
    I work on behalf of HP
    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

  • I just created a new profile/user on my MacBook Pro. My pointer/mouse. It works fine in my older user profile, but when I go to the new profile my mac will not respond to clicks. Mouse moves but will not click. Already tried restarting and the pram zap.

    I just created a new profile/user on my MacBook Pro. My pointer/mouse on my trackpad. It works fine in my older user profile, but when I go to the new profile my mac will not respond to clicks. The Mouse moves but will not click. Already tried restarting and the pram zap. The problem starts when I log out of my main profile. I get to the login screen and my laptop stops responding to clicks. When I manage to make my way back to my main profile the mouse works perfectly.  Should I just delete the new profile and try again?

    If the modem is also a router, either use the modem in bridge and run pppoe client on the TC.. that is assuming ADSL or similar eg vdsl. If it is cable service.. and the modem is a router, then bridge the TC.. go to internet page and select connect by ethernet and below that set connection sharing to bridge.
    Please tell us more about the modem if the above gives you issues.

  • Help!!!! my ipod touch 3rd gen won't turn on. at first the problem was it kept shutting off whenever i went into an app, then i plugged it up to the computer to restore it from back up it was working then the ipod just shut off before it was restored help

    Help!!!! my ipod touch 3rd gen won't turn on. at first the problem was it kept shutting off whenever i went into an app, then i plugged it up to the computer to restore it from back up it was working then the ipod just shut off before it was restored help

    Try:
    - iOS: Not responding or does not turn on
    - Also try DFU mode after try recovery mode
    How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
    - If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
    - Try on another computer
    - If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
    Apple Retail Store - Genius Bar       

  • My 24" iMac just died and will not power-up.  What can I do?

    My 24" iMac just died and will not power-up.  What can I do?

    Bring it into an Apple Store for a free diagnosis and quote for cost of repair/replacement of parts.
    If the costs are $500 or over, consider using the money toward a new or "newer" (used) Mac.

  • New i pad 3 was working via setup then screen went black can hear it working but no pitchure please help

    new i pad 3 was working via setup then screen went black can hear it working but no picture please help

    If this is a brand new iPad - and I don't know where you can buy a brand new iPad 3, I would take it back to the store before going any further. It sound like the screen dies from what you are saying.

  • My nano blinks the apple logo when plugged into a charger and will not respond to any reset commands, anyone have experiance with this problem?

    My nano blinks the apple logo when plugged into a charger and will not respond to any reset commands, anyone have experiance with this problem?

    By a reset, I assume you meaning pressing and holding both the Select (Center) and Menu buttons (or Volume Down and Sleep/Wake buttons on the 6G Nano) long enough for the Apple logo to appear?
    What happens if you try to manually place the iPod into Disk Mode?  If you can do that, I would recommend connecting the iPod to iTunes and restoring it.
    Putting iPod into Disk Mode
    B-rock

  • My iPod touch crashes. There is no rhyme or reason as to when the crash occurs. It will not reboot until reconnected to a power source. Once connected to a power source, it reboots and works well. When disconnected it will work then crash again.

    My Ipod Touch 4th generation (8gb, iOS 5.1) crashes for no apparent reason. There is no rhyme or reason to when the crash occurs.
    Once it crashes, the only way to reboot the iPod is to connect it to an external power source (computer or AC outlet). Once connected, it will reboot and operate normally.
    When disconnected from the power source, it will operate for a variable periods of time (maybe minutes, maybe hours) then crash again. It can't be rebooted until again attached to an external power source.
    Has anyone experienced a similar situation? Thanks for your help.....

    I hate to let you down. I live a long way from any Apple store, so I returned the iPod to the seller. I really don't know if I'll buy another.
    I know it's probably an isolated incident, but this kind of experience leaves a bad taste in your mouth.

  • Why would the Java Plugin not work in Firefox 5 on Mac SnowLeopard? I have the most recent version but am unable to use any Java features on Firefox 5. Firefox 3.6 works with the same Java but 5 will not.

    Most recent version of Java and firefox. Java Applications will start to load but end up in an infinite loading loop.

    Well, it's what I did to get my Java working in Firefox 4. I installed both binaries into my Library/Internet Plug-ins folder. The version was newer that what was previously installed (newer version is 0.9.7.5). It solved the Java problems I was having. My inital problem was that Java would not initiate and no applets would run in Firefox version 4 which I just installed a few days ago.
    I know the readme.txt. says it is not compatible with version 4, but the release date on 0.9.7.5 is after the release date of Firefox 4 and so that was I tried it. I figure there was nothing to lose as at worst it woud update my two plug-in files. Nothing was going to be changed otherwise. If you try it, it might work.

  • The iMac late 2011 manual will not open in safari.

    Trying to download iMac manual, late intel 2011. when link is selected on apple site, it opens in safari to a black screen. trying to save as, brings error message of not able to save file. i have latest adobe reader and working latest lion os x.

    BTW, this does not resolve issue either: (from another post) launch Adobe Reader. Then from the Menu Bar top of your screen click Adobe Reader/Preferences. Select Internet on the left. Then click the pop up menu next to;
    Display PDF in browser using: Select Adobe Reader.

  • I can access the "Firefox Prefereences", but when the "about:preferences" starts, it will not let you access anything except the "General" tab.

    All of the other "tabs" show up on the tab menu, but when you click on them, only the "General" tab will be there. You can make changes to the items in the "General" tab, but nothing else. I am using a HP Pavillion dv7 laptop, running Ubuntu 13.10, and Firefox 29. This only started with version 29. Before everything worked.

    Works for me on Linux.
    Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
    *Do NOT click the Reset button on the Safe Mode start window.
    *https://support.mozilla.org/kb/Safe+Mode
    *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
    Create a new profile as a test to check if your current profile is causing the problem.
    See "Creating a profile":
    *https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
    *http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
    If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem
    *http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

  • My thunderbird suddenly stops working when I do any action and displays (Not Responding) but when I wait for a minute or two works but does it again when I pres

    When I start up everything looks normal but when I choose an email to read, the loading green wheel comes out and takes a long time. If I try to press anything the (Not Responding) shows up on the tab above. When I wait for a minute or two, it works back without the green wheel but when I choose an email again, the Not Responding message comes out again. I"ve tried the compacting, safe mode , plug-in disabled. But still happens everytime.

    I think you will find the issue is your anti virus. But for a quick and dirty try simply compact your folders from the File menu (alt+F).
    That may help if there is space to be recovered and provide temporary relief..
    Restart the operating system in '''[http://en.wikipedia.org/wiki/Safe_mode safe mode with Networking]'''. This loads only the very basics needed to start your computer while enabling an Internet connection. Click on your operating system for instructions on how to start in safe mode: [http://windows.microsoft.com/en-us/windows-8/windows-startup-settings-including-safe-mode Windows 8], [http://windows.microsoft.com/en-us/windows/start-computer-safe-mode#start-computer-safe-mode=windows-7 Windows 7], [http://windows.microsoft.com/en-us/windows/start-computer-safe-mode#start-computer-safe-mode=windows-vista Windows Vista], [http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/boot_failsafe.mspx?mfr=true" Windows XP], [http://support.apple.com/kb/ht1564 OSX]
    ; If safe mode for the operating system fixes the issue, there's other software in your computer that's causing problems. Possibilities include but not limited to: AV scanning, virus/malware, background downloads such as program updates.

  • About once a week, I can be doing some really important uni work and the bloody thing crashes and states 'not responding'

    I open Firefox, then as soon as it opens it states 'not responding' then starts working, then 'sticks' on every page/site I go to. Am doing important uni work and am getting sick of this happening, it's either great or rubbish and very bloody annoying.

    upgrade your browser to Firefox 9 and check
    * getfirefox.com

  • HT1349 there is power, but the screen just went black

    i have a mac pro that has power, but the screen went black. has anyone else had this problem?

    Hello Gail,
    It sounds like you can hear your Mac start up, but you do not see anything on the screen.  I definitely understand your concern with this.
    I found an article with steps to troubleshoot issues with displays.  This article is for internal and external displays.  I wasn't sure if you were using a Mac Pro or MacBook Pro from your post.  If you are using a Mac Pro, follow the steps for external displays, but if you're using a MacBook Pro, follow the steps for internal displays.  I recommend reviewing the full article, but this step specifically stands out to me for the issue you described:
    Reset the system
    You can reset the Mac's parameter RAM and SMC.
    You can find the full article here:
    Apple computers: Troubleshooting issues with video on internal or external displays
    http://support.apple.com/kb/ht1573
    Thank you for posting in the Apple Support Communities.
    Best,
    Sheila M.

  • Our lap top lost power as it was printing from our hp psc 1315 and will not print now

    The printer was in the middle of printing and the lap top lost power. When I repowered it the print spit out and now the printer will not print.  The print sits in the  que but does not finish. Help - thanks

    Hello @dbrown68,
    Welcome to the HP Support Forums!
    I understand that since losing power on your laptop in the middle on a print job your HP PSC 1315 All-in-One Printer will not print from your Windows XP computer. I would like to assist you today with resolving this issue.
    To start can I please have you click here to download and run the HP Print and Scan Doctor Tool. This Tool will run on your computer and 'fix printing' issues for you. Should any driver, software or connection conflicts be found than the HP Print and Scan Doctor Tool will attempt to resolve the conflicts for you. There is the likelihood that when the computer shut down during the in progress print that print job became corrupted in the Print Spooler of the computer. The Print Spooler is the print system on your computer and controls all printing no matter the make or model of printer. The job can remain corrupted and stuck in the Print Spooler even after printing. Ideally, if any Print Spooler corruptions are found the HP Print and Scan Doctor Tool will resolve those corruptions.
    Please respond to this post with the result of running the HP Print and Scan Doctor Tool. Good luck!
    X-23
    I work on behalf of HP
    Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
    Click the "Kudos, Thumbs Up" on the right to say "Thanks" for helping!

Maybe you are looking for