monitor is blinking and screen goes black

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  1. Cerawy's Avatar
    Posts : 848
    Windows 10 Home 64 bit
       #1

    My monitor goes black


    I got a weird issue with my monitor a few days ago. I turned on my computer, and my monitor wouldnt show anything. If i take out the graphics card out and insert it again, the monitor begins to blink and you can see the desktop for less than a second before it goes off again, and it just continues like that. I have tested it with various graphics cards, and the problem persist. Sometimes after rebooting my computer 7-8 times, my monitor will start working again. I have tried plugging in both a dvi-d and a hdmi cable, but the problem is the same.

    Solved, it was the power adapter for my montior causing problems.
    Last edited by Cerawy; 2 Weeks Ago at 04:12.
      My Computer

  2. Caledon Ken's Avatar
    Posts : 24,152
    Windows 10 Pro x64 Version 2004
       #2

    Hi Cerawy.

    Have you check Windows Update history. You are looking for what got install two days ago when problem started. If you can readily identify then you could back it out.

    Some MB don't like having hardware swapped without resetting BIOS. If you do this, reset your BIOS, know your settings so you can restore.

    Next track, does your machine display the same behaviour in Safe Mode. (Minimal apps, basic graphics driver.) The way I would start the process off of entering Safe Mode, hold shift key down, click restart. Two failed attempts to boot will also summons the advance startup options.

    Boot to Advanced Startup Options in Windows 10

    If screen is fine, although poor resolution, then I believe you have confirmed hardware okay. The next question, is it the graphics driver or an application. Since it does it with Graphics card and onboard graphics I leaning towards app issue if the screen is okay in safe mode.

    If display flickers in Safe Mode I might be inclined to remove CMOS battery, disconnect and reconnect all connections, especially power cables at both ends if it is one of those "use what you need" models. Any chance you have spare power supply if only to test as you need to isolate cause.

    You could uninstall the graphics driver and software and then re-install a known working version.

    On reboot if screen continues to flash, with older working driver, you may have an application issue. In that case you could try a clean boot to see if that resolves issue. If screen does not flicker on clean boot then you got an app / program issue. The tutorial walks you through the identification process.

    Perform a Clean Boot in Windows 10 to Troubleshoot Software Conflicts

    One other idea, use system restore to go back in time to a working version.

    As with all problem diagnostics, Windows can be cranky. One member last week did a clean boot and wound up restoring his entire system from an Image. Should not have happen however it did.

    Have your data backed up, boot media available and it is always sound practice to have an Image created with a tool like Macrium Reflect.

    Backup and Restore with Macrium Reflect


    Ken
      My Computer

  3. Cerawy's Avatar
    Posts : 848
    Windows 10 Home 64 bit
    Thread Starter
       #3

    Well the problem continues after a fresh install of windows. I have tried reseting bios to default as well. I cannot really test it in safemode, because the monitor goes black before getting to the point where you can choose to boot in safemode. I also find that once my computer manages to start without problems, I can usually shut it down and restart it without problems for the rest of the day. The problem always comes back the next day after my computer has been turned off for about 8 hours. I have tried to reinstall the gfx drivers and they are updated to the latest version from nvidias website.
      My Computer

  4. Caledon Ken's Avatar
    Posts : 24,152
    Windows 10 Pro x64 Version 2004
       #4

    Okay, good to know. Please disable hibernation which in turn will kill Windows Fast Startup. This is for a test.

    To Command Prompt (Admin) or Power Shell (Admin) enter the following.

    powercfg -h off

    to reverse change the word off to on in the command.

    Power down your device. Power on, it should be fine. You can do the longer test, the two day version, and see if issue remains solved.

    Ken
      My Computer

  5. Plankton's Avatar
    Posts : 2,078
    Windows 10 Pro
       #5

    Try with a different monitor.....it's sounds like the monitor might be the issue here. I had an HP system do the exact same thing and it ended up being the monitor....a new monitor and it worked right ever since.

    Oh crap....didn't see the end of your post. So disregard.
      My Computer

  6. clam1952's Avatar
    Posts : 811
    Windows 10 Pro 20H2 build 19042.906
       #6

    However maybe try a different monitor cable if you can?
      My Computers

  7. Cerawy's Avatar
    Posts : 848
    Windows 10 Home 64 bit
    Thread Starter
       #7

    Caledon Ken said:
    Okay, good to know. Please disable hibernation which in turn will kill Windows Fast Startup. This is for a test.

    Power down your device. Power on, it should be fine. You can do the longer test, the two day version, and see if issue remains solved.
    The problem is, once i get to my desktop without my monitor blinking, i can pretty much do what, i can reboot my pc, l turn it off and on again without problems. But I did the command as you said.

    Plankton said:
    Try with a different monitor.....it's sounds like the monitor might be the issue here. I had an HP system do the exact same thing and it ended up being the monitor....a new monitor and it worked right ever since.
    clam1952 said:
    However maybe try a different monitor cable if you can?
    I have tried both an hdmi and dvi-d cable, i have tried with two different graphics cards (gtx 650 + gtx 750ti) and with one of the cards the screen goes black, with the other card my monitor starts blinking. But I can try another monitor.

    I should problably also say that I have to remove all pci devices to get to my desktop without my monitor blinking, but the next day after my computer has been shut off for about 8 hours, the problem comes back again.
      My Computer

  8. Cerawy's Avatar
    Posts : 848
    Windows 10 Home 64 bit
    Thread Starter
       #8

    Ok, so i think i have found the problem. Seems like whenever i start my computer after i have left it overnight, the monitor starts blinking as soon as i get into my desktop in windows. But after taking out my wireless networks cards from the mainboard, i can boot my computer just fine. I can then connect my wireless networks card again without problems.. what gives?
      My Computer

  9. Caledon Ken's Avatar
    Posts : 24,152
    Windows 10 Pro x64 Version 2004
       #9

    Possible radio / electrical interference.

    Can you locate the wireless card further away from video? Also watch wiring / antennas both internally and externally.


    Ken
      My Computer

  10. Cerawy's Avatar
    Posts : 848
    Windows 10 Home 64 bit
    Thread Starter
       #10

    I have tried a different pci slot.. same result.. I have been using this hardware for years without problems..
      My Computer


 
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