Windows 8 and 8.1 Forums


Help windows 8 blinking screen on startup

  1. #21


    Australia
    Posts : 584
    Windows 8 Dev Preview x64


    Any time.

    Do let us know how it goes!

      My System SpecsSystem Spec

  2. #22


    What about doing a system diagnostic test of the machine? F12 usually gets to to the screen to be able to select do this.
      My System SpecsSystem Spec

  3. #23


    Philippines
    Posts : 32
    Windows 7 x64 Home Premium/Windows 7 x32 Pro/ Windows 8 Developer Preview x 64


    oh damn can't get to reformat using a usb drive what can resolve this
      My System SpecsSystem Spec

  4. #24


    Philippines
    Posts : 32
    Windows 7 x64 Home Premium/Windows 7 x32 Pro/ Windows 8 Developer Preview x 64


    damn it refresh/reset your pc

    insert your windows installation or recovery media to continue

    the media inserted is not valid. Try Again

    can i say a bad word??
      My System SpecsSystem Spec

  5. #25


    Philippines
    Posts : 32
    Windows 7 x64 Home Premium/Windows 7 x32 Pro/ Windows 8 Developer Preview x 64


    i think all that is left is advance options

    i dnt have system restore nor system image recovery

    i only have it in my usb and i dunno whats the nxt step
      My System SpecsSystem Spec

  6. #26


    Philippines
    Posts : 32
    Windows 7 x64 Home Premium/Windows 7 x32 Pro/ Windows 8 Developer Preview x 64


    ok its refreshing 71% hope this works i believe it will work
      My System SpecsSystem Spec

  7. #27


    Australia
    Posts : 584
    Windows 8 Dev Preview x64


    Oh, you figured it out. Well that's good to know.

    Next time you want to say so much, I suggest you use the edit button. Saves posting lots in a row.
      My System SpecsSystem Spec

  8. #28


    Posts : 1
    Windows 8 Developer


    Quote Originally Posted by Avalon View Post
    Oh, you figured it out. Well that's good to know.

    Next time you want to say so much, I suggest you use the edit button. Saves posting lots in a row.
    So I'm having the same issue as the above user. I am trying to do a system refresh and it's telling me that "The media inserted is not valid. Try again." The media I'm using is a 16gb sandisk cruzer with Win8 developer 32bit on it that I downloaded about 30 minutes ago. Is there a solution to this? Maybe downloading the full 64bit with developer tools? Or switching to a DVD of the iso?

    Any help is good help!
      My System SpecsSystem Spec

  9. #29


    Posts : 9
    WIndows 8


    I had this same frustrating issue & this was how I resolved it.

    1. Since the flashing screen couldn't allow me restart my PC in safe mode, I pressed the power button to force a shut down.
    2. I pressed the power button to start up and pressed the power button again after 2 secs to create an unusual shutdown.
    3. On next attempt to start up (by pressing power button again), Windows tried to repair startup so I could now boot into safe mode with networking.
    4. I already realised the flashing issue had to do with my Norton 360 installation so I had to find a way to properly uninstall it.
    5. I Googled "Norton_Removal_Tool" from Norton and downloaded it.
    6. Since safe mode wouldn't normally allow installations, I downloaded "SafeMSI" to enable me install/unistall in safe mode.
    7. After running "Safe MSI", I installed "Norton_Removal_Tool" to remove all Norton products/services.
    8. The above action demanded a restart which I obliged to.
    9. Non essential step: I ran Malwarebytes to confirm that all is alright & switched to a new antivirus.
    10. My PC is back and happy again : )
      My System SpecsSystem Spec

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Help windows 8 blinking screen on startup
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