Panasonic cf 20 will no longer boot-only black screen

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  • Rescogitans
    New Member
    • Sep 2022
    • 3
    • Usa
    #1

    Panasonic cf 20 will no longer boot-only black screen

    Hello all. Only my second post.

    I have a panasonic CF-20C5142VM which was booting to bios with no issues. I needed to add an ssd that was not initially being recognized by the bios. Found a link that suggested that I disable uefi mode and clear keys then to reboot to allow bios to now see New ssd. After restarting, screen is entirely black with no image. Found another post that suggested unplugging bios battery because some remnants of the bios may still exist in other parts of board but did not fix issue-screen is still black.
    Anyone run across something like this before? Panasonic does have bios updates on their website but these are .exe files.
    In the past I was able to create a bootable usb to update bios with HP's but not with Panasonic.
    Suggestions??

    Thanks!
    Tags: None
    • mcplslg123
      Badcaps Legend
      • Jun 2015
      • 7262
      • india
      #2
      Re: Panasonic cf 20 will no longer boot-only black screen

      You need to desolder the bios chip and program it with a spi programmer.

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