Black screen during boot up

My iMac 2007 goes black, no cursor, no anything. It starts up fine, I get the initial startup screen (Gray), but goes black after a second. I tried resetting the PRAM multiple times, and unplugged it from the back multiple times. The computer works fine as I have it hooked to my TV and I'm getting a picture on that, so it's not the memory. I don't have the money to take it to Apple Genius Bar. Any help from you will be appreciated

I thought of something else, I ran CleanMyMac 2 and when it was finished all the problems started.

Similar Messages

  • X220 black screen during boot

    Hello,
    It's my first post, so welcome . I've been a lenovo thinkpad user for a month - X220 with SSD, W7 Professional, umts module and extended battery (if more information is needed I can send the full description) - and a strange bug occurs to my new laptop sometimes. After pressing the power button most of controls (camera, speaker mute, microphone mute) always make a flash. Next, most of the times (80-90%) the thinkpad logo shows up and the Windows 7 boots - that's ok. Unfortunately, about one in ten trials end in getting a black screen just after the flashes of the controls. The screen is enabled - it is just black. I must disable laptop (I don't have to keep the power button long - simple pressing is enough), and then, the second trial always succeed. It only occurs during the fresh, full boot - I didn't notice it after restarts, back from sleep or hibernation. I use docking stations, but it occurs in both ways - with or without docking station. It's not a huge problem to ignore that issue, but I'm worried that it may result in a more serious problem in the future. Any ideas and help will be appreciated.
    Best regards,
    Krzysztof
    Solved!
    Go to Solution.

    Hi Krzysztof,
    I would check if the problem exists if you use the HDD which came with your notebook.
    Also check if the SSD is attached firmly to the connector.
    Also try a system check with ThinkVantage Toolbox.
    http://support.lenovo.com/en_US/detail.page?LegacyDocID=LENV-DIAGS#ltb
    If the problem persists with the native HDD like the SSD, then I would contact service.
    kind regards
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    Follow @LenovoForums on Twitter! Try the forum search, before first posting: Forum Search Option
    Please insert your type, model (not S/N) number and used OS in your posts.
    I´m a volunteer here using New X1 Carbon, ThinkPad Yoga, Yoga 11s, Yoga 13, T430s,T510, X220t, IdeaCentre B540.
    TIP: If your computer runs satisfactorily now, it may not be necessary to update the system.
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  • [SOLVED] freeze (black screen) during boot

    When booting, after I can choose between Arch and Arch Fallback, the console messages are still huge (resolution not yet fit to screen). That's the output of scripts run on boot, if I understand it right. Then, the screen turns black for a second when the screen resolution is increased, and then the colored stuff comes, e.g. the Daemons (network etc.).
    Now sometimes, the screen just remains black when the screen resolution is increased. Nothing happens anymore, then, and I have to force reboot holding the power button. Most times, booting works on second try, sometimes it needs more tries (but eventually, it always boots just fine).
    I'm running up-to-date Arch on a MacBook4 dualboot (rEFIt boots first, and from there, Arch is loaded by Grub). That's all system information I can provide right know, since I don't know much about what happens at boot, and there doesn't seem to be a boot logfile on Arch.
    It's not a really fatal problem because, as mentionned, Arch eventually boots just fine every time after some tries; but it's really, really annoying because otherwise, my Arch runs rock stable (all crashes are window manager, i.e. gnome3, related...).
    Last edited by cryptkeeper (2012-06-12 14:38:10)

    I finally solved the problem, as it seems for good because I haven't had a single freeze on boot anymore since I did this.
    What I did is to set up an "early KMS start", described here: https://wiki.archlinux.org/index.php/KM … _KMS_start . I stumbled into this when I was googling for a solution, thought: why not give it a try?, and it works!!
    Last edited by cryptkeeper (2012-06-12 14:48:03)

  • Black Screen during boot Nouveau EVGA GeForce GTX 550 Ti [Solved]

    Hello,
    First I'd like to start off by admitting that I'm a newb, so I apologize in advance if posting this was unnecessary, but I searched, and though I found many similar problems, I could not solve my problem.
    As stated in the subject line, I have an EVGA GeForce GTX 550 Ti, and I cannot make it work with the open source Nouveau driver.
    When I try to boot the screen goes black.
    If I use the onboard VGA, it works perfectly fine, however, when I switch over to the onboard DVI, my monitor never even gets a signal. I have an MSI board with the Z77 chipset and an Intel I5.
    I've tried installing the proprietary Nvidia driver and using that. It boots, the problem is I can't change the screen's resolution to anything other than 800 x 600 and my monitor is 1680 x 1050.
    I'd be happy using either driver as long as it works correctly.
    Oh yea, I'm running kernel 3.4.5 (which I believe is the latest) and the rest of my system is completely up to date, so please don't link me here: https://bbs.archlinux.org/viewtopic.php?pid=1102763
    Thanks in advance!
    -daniel
    Last edited by xleafr (2012-07-30 04:23:35)

    Okay, then onto the nvidia driver problem.
    I can't set the resolution to what I want (1680 x 1050). My only option is 800 x 600 which is pretty terrible.
    I've tried a few things with xrandr, but nothing worked.
    Yea, I was only using tty because when I start x everything was either too large or couldn't see the command line to start x in the first place.
    So how can I change my resolution (I've tried editing xorg.conf but once again, my attempt to solve my problem was fruitless).

  • Black screen during boot

    here is the situation. i restarted my A215-S4757 and left it without signing in for a couple hours. when i came back, the screen was black but i could still see and move the mouse. ctrl + alt + delete wouldn't do anything. i turned it off by holding the power button but same thing happens.  only safe mode works but i can't really do anything with that.
    i think i had a similar problem last summer and had to use the recovery disc and lost everything. i hope i don't have to resort to that again.  any possible solutions/advice/ideas?
    thanks

    Satellite A215-S4757 
    Try this.
    Turn the computer on and immediately press and hold the F8 key.
    On the Advanced Boot Options menu, choose Repair Your Computer.
    When you reach the System Recovery Options menu, choose Startup Repair.
    If that doesn't do the trick, go back to the System Recovery Options menu and do a System Restore.
    If that doesn't fix things either, go back to the System Recovery Options menu, choose Command Prompt, and follow the directions here
    How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair start...
    -Jerry

  • Black screen during booting despite using Thinkvanta​ge button

    Hi
    Helped a friend yesterday with headlined problem (see above). The problem appeared to be related to the Presentation Director (Fn+F7). So I connected an external display and that was that. Easy solved when U can see...... 
    The question: While booting I used the blue Thinkvantage button but obviously this simpel presentation facility overrides the vital Rescue & Recovery's workspace to show up??? How is this possible? May the R&R facility be deactivated? If so, how do you reactivate it again? If I didn't had another display nereby this would not been solved.
    Grateful for any explanation!
    Regards//Pc

    Plaincollar, welcome to the forum,
    how is the BIOS configured as far as boot display device is concerned? Ensure that you have the ThinkPad screen is set as boot display device in the config > display menu.  BIOS Simulator Index - ThinkPad General
    Hope this helps
    Andy  ______________________________________
    Please remember to come back and mark the post that you feel solved your question as the solution, it earns the member + points
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  • Apples update didn't work for me: Boot Camp: iMac displays a black screen during installation of Windows 7

    Boot Camp: iMac displays a black screen during installation of Windows 7 - Apple Support
    I have followed each of the steps listed in the link above with no success.
    Prior to adding the extra drivers I was able to start the Windows install process up to reformatting the "Windows" Bootcamp drive. After that the computer would go through some instal processes and eventually restart. After the restart the screen would go black. The black screen lead me to the  Apple Support link above dated March 5 2015. After going through steps listed in the link above, I get an error message stating that the D:\Sources\instal.win. file cannot be located. I am forced to restart the computer at that point and theWindows install process attempts to start again but always ends up at the same point.
    Note: I am installing windows 7 Pro from a DVD. I scanned the AutoUnattend.xml file and noticed that it refers to "Windows 7 ULTIMATE" but not "Pro" or any others that I could see. (see below). Could that be part of the issue?
    Any feedback would be greatly appreciated.
    <cpi:offlineImage cpi:source="wim:d:/sources/install.wim#Windows 7 ULTIMATE" xmlns:cpi="urn:schemas-microsoft-com:cpi" />
    </unattend>
    iMac (27-inch, Late 2009)
    2.66 GHz Intel Core i5
    16 GB 1067 MHz DDR3
    ATI Radeon HD 4850 512 MB

    Here is an over-simplified explanation of WIM and CLG files. Assume your DVD Media contains
    W7- Ultimate
    W7- Professional
    W7- Home Premium
    W7- Home Basic
    WIM Files
    File1
    y
    y
    y
    y
    File2
    y
    y
    y
    y
    File3
    y
    File4
    y
    y
    File4
    y
    y
    y
    The File .wim will contains a compressed image which contains File [1...5].
    The W7-Ultimate .clg will have 5 entries, with all set to 'Y'.
    The W7-Professional .clg will have 5 entries, with 'Y','Y','N','Y','Y'.
    The W7-Home Premium  .clg will have 5 entries, with 'Y','Y','N','N','Y'.
    The W7-Home Basic .clg file will have 5 entries, with 'Y','Y','N','N','N'.
    This allows a single .wim Image file on the DVD media to be used to install any of the 5 flavors of Windows. When you enter your product key, the Installer knows what specific W7 variant you have the key for and will tell the WIM to extract the specific files the installer needs to be extracted.
    The following line
    <cpi:offlineImage cpi:source="wim:d:/sources/install.wim#Windows 7 ULTIMATE" xmlns:cpi="urn:schemas-microsoft-com:cpi" />
    is telling that a retail product key will be entered, which should go look for this specific .clg file (from the five you already have on disk).  You can test if it will work for you by changing this line to the following
    <cpi:offlineImage cpi:source="wim:d:/sources/install.wim#Windows 7 PROFESSIONAL" xmlns:cpi="urn:schemas-microsoft-com:cpi" />
    If it does not work, the other issue can be related to device discovery. Typically A: and B: device names are reserved for Floppy Drives. C: is your internal HDD.
    D: can either point to the Optical drive, or the USB. The normal convention is that the removable media is named from Z: backwards. Y: and Z: are usually used for Network drives, so X: should be your USB. First try with the change to "Professional". If it does not work,

  • HT3986 i get a black screen during windows 7 installation on bootcamp 5.0.1

    i get a black screen during windows 7 installation on bootcamp 5.0.1 , it wont install

    Hi wb2009,
    I haven't found that the TV would be an issue, but did find an article that states to not have extra USB devices connected.
    Boot Camp: Windows installation boots to black screen with blinking cursor
    http://support.apple.com/kb/TS4536
    The Windows installation may boot to a black screen with a blinking cursor. This can occur if you use a USB optical drive or USB Flash drive for the Windows installation and another USB device is also connected to the computer.
    There's another article that mentions Windows XP or Vista that may apply.
    Archived - Boot Camp: Start up to black screen after installing Windows
    http://support.apple.com/kb/TS2600
    Thank you for visiting Apple Support Communities.
    Nubz

  • Black screen during windows 7 install on 27inch iMac

    My iMac turns to a black screen during windows 7 boot camp install. I can use the install disk on my wifes Macbook Pro so I know that the media is good.

    Please re-post in the Boot Camp forum.

  • Probelm while installing windows 7 on MacBook pro through bootcamp? I am getting a black screen during installation

    Probelm while installing windows 7 on MacBook pro through bootcamp? I am getting a black screen during installation

    Apple Support Boot Camp
    Is there any article in the above?
    did you read the pdf before beginning from Boot Camp Assistant?
    Did you upgrade to Lion or was it pre-installed?

  • Win 7/Z580: Black screen on boot up, before login screen?

    Win 7/Z580: Black screen on boot up, before login screen?
    =======================================
    I find some interesting posting in this forum. Thanks for keeping this forum to help windows/Lenovo community. I like to pick up the brain of this forum to resolve the black screen issue. I am not sure, whether it caused by virus. I use Microsoft Security Essentials. I am not able to run this in command prompt.
    I started my laptop this morning & login screen showed up. Once I entered my login credentials, I heard the sound that usually plays once a login is successful, but I ended up with a black screen. After this occurred, I had to hold down the power button to manually shut down the computer. Once I started it up again, I was prompted to do a system repair, which eventually ended up with all successful outcomes, but I now have a black screen with a cursor before the login screen now. I have no idea what caused this to happen. My laptop is a Lenovo Ideapad Model Z580 (500 GB HD, 6GB RAM).
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    Last Known Good Configuration leads to same
    Enable Low Resolution Video (640x480) leads to same My Z580 is not responding to CTRL+ALT+DEL Windows Logo keys as well.
    **** I tried SAFE Mode. It loaded couple of drivers and paused at CLASSPNP.SYS load. It went to Black screen with cursor at center.
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    Z580 PC is not responding to control from command prompt (under Repair Your computer)  either.
    Z580 is able to use the "Repair Your computer" tools after pressing F8 during booting .
    Under local user login it provided Start Repair option. As I pick this option, I got the following. Problem signature
    Startup repair offline
    1 - 6.1.7600.16385
    2 -
    6.1.7600.16385
    3 - unknown
    4 - 21200332
    5 - autofailover
    6 -
    4
    7 - NoRootCause
    os v - 6.1.7600.2.1.0.2561
    locale id – 1033
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    I am not able to run cmd as admin
    I reviewed the past posting of this forum on this subject.
    Windows 7 boots to an unresponsive black screen with mouse cursor...
    System File Checker: Run sfc /scannow & analyze its logs in Windows 7 / 8
    Windows Resource Protection could not start the repair service
    How to analyze the log file entries that the Microsoft Windows Resource Checker (SFC.exe) program generates in Windows Vista
    Force SFC to Run in Windows 7
    Windows Resource Protection found corrupt files but was unable to fix some of them
    SFC /SCANNOW showed up
    "Windows Resource Protection could not start the repair service
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    "Windows Resource Protection detected pending repair restart the computer"
    I ran repair options using sfc /scannow /offbootdir=x:\ /offwindir=D:\windows
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    I did findstr /c:"[SR]" %windir%\logs\cbs\cbs.log >sfcdetails.txt I will be glad to attach the zip file that contain CBS.LOG & [SR] tag extract (xxx.txt).
    I did not any find ERRORS there, SFC ended with message saying "found corrupt files but was unable to fix some of them" . It is misleading. There is no [SR] tag pointing to corrupt files. Does SFC through false positive like this?
    I ran chkdsk. ResultsFile verification completed.
    0 bad file records processed.
    0 EA records processed.
    CHKDSK is verifying indexes (stage 2 of 5)...
    Index verification completed.
    0 unindexed files scanned.
    0 unindexed files recovered.
    Windows has checked the file system and found no problems.
    0 KB in bad sectors.
    Failed to transfer logged messages to the event log with status 50.
    It is puzzling me.
    Thanks for helping.

    I tried these steps 8/7/2015. I ran chkdsk. Results for D:\
    File verification completed.
    0 bad file records processed.
    0 EA records processed.
    CHKDSK is verifying indexes (stage 2 of 5)...
    Index verification completed.
    0 unindexed files scanned.
    0 unindexed files recovered.
    Windows has checked the file system and found no problems.
    0 KB in bad sectors.
    Failed to transfer logged messages to the event log with status 50.
    Updated on 8/7
    ============
    Here are my HDD config:
    Volume ### Ltr Label Fs Type Status Info
    Volume 0 F WDO_Media64 UDF DVD- Healthy
    Volume 1 C NTFS Partition Healthy
    Volume 2 D Windows7_OS NTFS Partition Healthy
    Volume 3 E LENOVO NTFS Partition Healthy
    Volume 4 G FAT Removable Healthy
    Volume 5 LENOVO_PART NTFS Partition Healthy Hidden
    I ran CHKDSK /F /X for C, D, E. All resluted to "Windows has checked the file system and found no problems."
    F8 ===> Repair Computer===> Command Prompt ===> Works OK
    F8 ===> Repair Computer===> Start up Repair ==> Results into "Startup repair could not detect a problem"
    F8 ===> Repair Computer===> System Restore ===> "No restore points has been created on yout computer system drive"
    F8 ===> Repair Computer===> System Image Recovery ===> "Windows cannot find a system impage on this computer"
    F8 ===> Repair Computer===> windows Memory Diagnostiyics ===> "Black screen with Cursor in the middle"
    After getting into Command prompt
    I run net user
    User accounts for \\
    Administrator Guest
    The command completed with one or more errors
    It did not list other users in my laptop. I do not know why? I tried under F8 ===> Repair Computer===> Command Prompt ===> Works OK
    Here is the result:
    - Boot with Last Known Good Configuration (F8 menu) ===> Black screen with cursor in the middle
    - Restore to a prior date (System Restore) - System Restore ====> Already reported in previous reply
    - Try a clean startup Troubleshoot Application Conflicts by Performing a Clean Startup results in
    Clean Start up
    D:\Windows\System32>runas /user:administrator msconfig
    Enter the password for administrator:
    Attempting to start msconfig as user "MININT-84TH5FG\administrator" ...
    RUNAS ERROR: Unable to run - msconfig
    1060: The specified service does not exist as an installed service.
    - Try loading defaults in BIOS - F2 ==> f9 ==> f10 ===> Black screen with cursor in the middle
    Check if explorer.exe is running and start from CTRL+ALT+DEL (task manager - new task) ===> CTRL+ALT+DEL not responding
     Is anybody in this forum point me to fix? Thanks for looking into this issue. 

  • Black Screen After Boot up

    My T420s (2 months old) recently has been giving me a black screen after boot up (no "Thinkpad" image is displayed during boot up).  System totally unresponsive -- I have to push on/off button multiple times.  Subsequent boot up usually OK.  Sometimes once I'm up and running, upon entering sleep mode, the machine will not wake up.
    I have adjusted power management setting and and up-to-date on all drives.  HELP!!!

    if this is constantly occurring this would mean something is wrong with the Thinkpad's hardware, since this laptop is fairly new, you should consider getting it fixed under warranty.
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    Jin Li
    May this year, be the year of 'DO'!
    I am a volunteer, and not a paid staff of Lenovo or Microsoft

  • I am getting frequent lock-ups and blue screens during boot up. The lock ups occur during normal use and I cannot click anything or force quit. The cursor shows something is loading, but never stops. I have to use power button. Ideas?

    I am getting frequent lock-ups and blue screens during boot up on my Mac Pro.  The lock- ups occur sometimes during normal use and I cannot click anything or force quit. The cursor shows something is loading, but never stops. I have to use power button.
    I had the Mac Defender malware and I have used apple jack but still having issues.

    I am getting frequent lock-ups and blue screens during boot up on my Mac Pro.  The lock- ups occur sometimes during normal use and I cannot click anything or force quit. The cursor shows something is loading, but never stops. I have to use power button.
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  • 970 GAMING black screen when boot on cold start, have to clear CMOS everytime

    I have 970 GAMING w/ FX8320, it shows black screen when boot on cold start, have to clear CMOS everytime to enter default.
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    In what DIMM slots did you insert your memory?  I just got and at this moment building a new computer with a 970. 
    A horrible experience I had with my last build reminded me of it.  My board was am MSI A88XM-E45.  DIMM1 is blue, DIMM2 is black, DIMM3 is blue, & DIMM4 is black.  When using two sticks of RAM, it says to install one on DIMM1 & the other in DIMM3 (Makes sense... After all, it's color colored that way).
    Well it would not boot.  I reseated every component and for HOURS tried almost everything.  Finally I decided to place my two sticks of RAM in the first two DIMMS and viola!
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  • Black screen on boot & Diagnostic errors

    Hi, 
    I've a HP g62 notebook pc that has some problems when is booting.
    Sometimes the screen is black when i try to boot or i've a BSOD related with the atikmpag.sys.This PC doesn't have warranty, but i don't know if the problem is only because of the SO or if there is any hardware failure.
    The PC model is the: g62-b10sp. Product id XF293EA#AB9
    System ID 143A
    I tried the HP diagnostics wich I retrieved the some test menssages: Memory Test: PASSED
    SMART CHECK : PASSED
    Short DST : PASSED
    Optimized DST : PASSEDHard disk test: PASSED
    Battery Test : Primary - Replace
    Failure ID: MBQ3W8-5667NG-9XL03F-C0F403 Start-Up Test : FAILED
    Failure ID: MBQ3W8-5667NG-9XL03F-X0F403 Run-In Test: FAILED
    FAILURE ID: MBQ3W8-5667NG-9XL03F-C0F403 System Tuneup: FAILED
    FAILURE ID: MBQ3W8-5667NG-9XL03F-C0F403 
    Someone from the HP support team could help me? 
    I wanna know what those failures id are related... They are failures from motherboard/graphics?
    Thank you for you attention
    Best regards

      Hi , Thank you for visiting the HP Forums! A great place where you can find solutions for your issues, with help from the community!
    I came across your post about the Notebook, and wanted to assist you! I have looked into your issue about your HP G62-b10SP Notebook and an Black screen on boot showing. Thank you for the error messages and the explanation. Very helpful in diagnosing the issue. The first error Battery Test : Primary - Replace
    Failure ID: MBQ3W8-5667NG-9XL03F-C0F403 the Real Time Clock battery needs to be replaced. All the others are the same error message as one can not perform as the Real Time Clock battery needs to be replaced. I recommend to replace the Real Time Clock battery and run the tests again. Here is a link to show you the part number and what you need to do to replace Real Time Clock battery. Page 51 for the part number and shows you how to replace it. I hope this helps, please let me know how it goes. Thanks.   

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