Startup Loop - screen turns on & off

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  1. Posts : 21
    Windows 10 Pro
       #1

    Startup Loop - screen turns on & off


    Hello, I'm after some help please, I've searched online and can't see where anyone else has the same issue.
    [firstly I don't know if this is the correct category, so please excuse if this needs changing]

    A bit of background, I have a desktop PC with Win10 installed and have two 500GB internal SSDs installed (main SSD drive was only 80GB).

    Everything was going great, I have 8GB RAM and a Nvidia GTX1080 8GB graphics card.
    On the weekend I decided to change things up slightly by installing Windows on one of the extra SSDs, so essentially a separate 'new' computer which I could boot from if I so wished.
    This worked fine

    However, when I now boot from the original drive, the display blinks on and off every 2-5 seconds. On for 3 seconds, off for 3 seconds, on for 3 seconds (approx.) et cetera. Not always 3 secs but always blinking. Not flickering, but turning on and off and on
    The PC enters the welcome screen and as there was no password/PIN set, it has the dots going round in circles, blinks on and of and on and finally gets to the desktop screen. Still blinking on and off
    Then after 30 seconds to a minute (haven't timed it), it goes back to the welcome screen, Dots spin around/screen blinking, then the desktop is displayed again, blinks on and off and then back to the welcome screen. There isn't an end to this.

    I've tried removing the graphics card and starting up off an old screen using a VGA cable. Same thing
    Also tried a second screen on DisplayPort/HDMI and no change

    Also the mouse can't seem to click
    To restart/shut down, I do Alt+F4 and arrow up/down and enter.

    Apologies I can't run a log as requested

    Its like something is missing or a driver is out of date (yep checked for Windows updates)

    I can press the windows button on the keyboard and type, I can get into about anything, but time is limited

    Doesn't seem to be a hardware issue, I can boot up fine off the other drive. I can also go into the problem disk C drive if that helps (i.e. if any files are missing or to add a driver to install, potentially)

    I'd really appreciate any suggestions from this community.

    PS sorry for the long-winded post!

    Thanks
    molathon
      My Computer


  2. Posts : 1,777
    Windows 11 [21H2]
       #2

    Please run V2 Log Collector as shown here:
    BSOD - Posting Instructions

    Upload the results here DO NOT EXTRACT IT!
    How to Upload and Post Screenshots and Files at Ten Forums
    How to Upload Large Diagnostic or Log files at TenForums

    and wait for a TenForums BSOD Analyst to analyze the logs.

    Our analysts need to be able to read your logs, if your default system language is not English please change it before running the log collection tools.

      My Computers


  3. Posts : 890
    10 Pro/11 Pro Dual Boot
       #3

    molathon said:
    Apologies I can't run a log as requested
    jbcarreon123 said:
    Please run V2 Log Collector as shown here:
    I think someone skimmed the post and missed the part i put in RED
      My Computers


  4. Posts : 890
    10 Pro/11 Pro Dual Boot
       #4

    molathon said:
    Hello, I'm after some help please, I've searched online and can't see where anyone else has the same issue.
    [firstly I don't know if this is the correct category, so please excuse if this needs changing]

    A bit of background, I have a desktop PC with Win10 installed and have two 500GB internal SSDs installed (main SSD drive was only 80GB).

    Everything was going great, I have 8GB RAM and a Nvidia GTX1080 8GB graphics card.
    On the weekend I decided to change things up slightly by installing Windows on one of the extra SSDs, so essentially a separate 'new' computer which I could boot from if I so wished.
    This worked fine

    However, when I now boot from the original drive, the display blinks on and off every 2-5 seconds. On for 3 seconds, off for 3 seconds, on for 3 seconds (approx.) et cetera. Not always 3 secs but always blinking. Not flickering, but turning on and off and on
    The PC enters the welcome screen and as there was no password/PIN set, it has the dots going round in circles, blinks on and of and on and finally gets to the desktop screen. Still blinking on and off
    Then after 30 seconds to a minute (haven't timed it), it goes back to the welcome screen, Dots spin around/screen blinking, then the desktop is displayed again, blinks on and off and then back to the welcome screen. There isn't an end to this.

    I've tried removing the graphics card and starting up off an old screen using a VGA cable. Same thing
    Also tried a second screen on DisplayPort/HDMI and no change

    Also the mouse can't seem to click
    To restart/shut down, I do Alt+F4 and arrow up/down and enter.

    Apologies I can't run a log as requested

    Its like something is missing or a driver is out of date (yep checked for Windows updates)

    I can press the windows button on the keyboard and type, I can get into about anything, but time is limited

    Doesn't seem to be a hardware issue, I can boot up fine off the other drive. I can also go into the problem disk C drive if that helps (i.e. if any files are missing or to add a driver to install, potentially)

    I'd really appreciate any suggestions from this community.

    PS sorry for the long-winded post!

    Thanks
    molathon
    Have you tried booting it into safe mode? (links to tutorial here)
      My Computers


  5. Posts : 21
    Windows 10 Pro
    Thread Starter
       #5

    tomdsr said:
    Have you tried booting it into safe mode? (links to tutorial here)
    Yes after an hour of doing this bit by bit, it booted up in safe mode, but does the same thing. Still blinks on and off.
    However, when it restarted and asked if I wanted to start in Windows 10 or Windows 10 Safe Mode, it didnt blink. Not sure if that helps
      My Computer


  6. Posts : 1,777
    Windows 11 [21H2]
       #6

    molathon said:
    Yes after an hour of doing this bit by bit, it booted up in safe mode, but does the same thing. Still blinks on and off.
    However, when it restarted and asked if I wanted to start in Windows 10 or Windows 10 Safe Mode, it didnt blink. Not sure if that helps
    How many minutes it will turn on before it will automatically restart?
      My Computers


  7. Posts : 890
    10 Pro/11 Pro Dual Boot
       #7

    jbcarreon123 said:
    How many minutes it will turn on before it will automatically restart?
    it never auto restarts. it will do it endlessly till he/she uses alt+f4 and uses the keyboard to navigate to shut down (mouse wont work)
      My Computers


  8. Posts : 890
    10 Pro/11 Pro Dual Boot
       #8

    molathon said:
    Yes after an hour of doing this bit by bit, it booted up in safe mode, but does the same thing. Still blinks on and off.
    However, when it restarted and asked if I wanted to start in Windows 10 or Windows 10 Safe Mode, it didnt blink. Not sure if that helps
    it doesnt blink when on the screen to choose 10 or 10 safe mode? does the mouse still not work on that screen?

    This is odd, because nothing has changed that should/would cause this.

    The new 10 install works ok still? If yes, booting into it works ok, and confirmed its on the other drive? (not the original, the one with the issue)
      My Computers


  9. Posts : 21
    Windows 10 Pro
    Thread Starter
       #9

    tomdsr said:
    it doesnt blink when on the screen to choose 10 or 10 safe mode? does the mouse still not work on that screen?

    This is odd, because nothing has changed that should/would cause this.

    The new 10 install works ok still? If yes, booting into it works ok, and confirmed its on the other drive? (not the original, the one with the issue)
    No it didnt blink on that screen (I thought that had fixed it!) ANd yes the mouse clicked fine on that screen.

    The new 10 install is perfect, works like a dream.
      My Computer


  10. Posts : 41,412
    windows 10 professional version 1607 build 14393.969 64 bit
       #10

    Please run V2 > upload results into this thread

    Were there BSOD?
      My Computer


 

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