HP Envy 17M-ch0xxx (455.0MK01.0002) BIOS

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  • bombob
    New Member
    • Aug 2021
    • 7
    • usa
    #1

    HP Envy 17M-ch0xxx (455.0MK01.0002) BIOS

    Issues started after bios update with power button blinking with no power on.Had to unscrew battery and detach it for it to boot with bad bios checksum message.Tried several Bios recovery using USB,showed it being flashed and booted fine but it would go back to same behavior as soon as I access the bios(Wont reboot). Would work fine for several days too as long as I don't go into the bios

    shut it down yesterday and now it will only show power led but no activity,doesn't boot to Bios USB recovery anymore. BIOS Chip is MX77L12850F it was on version F.14

    I need a way to backup the corrupted bios and flash a working image. Already ordered a T48(TL866-3G) programmer but I am not sure if it can save it
    Last edited by bombob; 03-23-2023, 12:06 PM. Reason: typo
    Tags: None
    • SMDFlea
      Super Moderator
      • Jan 2018
      • 20446
      • UK
      #2
      Re: HP Envy 17M-ch0xxx (455.0MK01.0002) BIOS

      Originally posted by bombob
      Already ordered a T48(TL866-3G) programmer but I am not sure if it can save it
      When you get the programmer make a backup,even if its corrupt and post it here.Post the laptop serial number as well.
      All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

        Comment

        • bombob
          New Member
          • Aug 2021
          • 7
          • usa
          #3
          Re: HP Envy 17M-ch0xxx (455.0MK01.0002) BIOS

          Originally posted by SMDFlea
          When you get the programmer make a backup,even if its corrupt and post it here.Post the laptop serial number as well.
          Awesome. Thanks, I will.

            Comment

            • bombob
              New Member
              • Aug 2021
              • 7
              • usa
              #4
              Re: HP Envy 17M-ch0xxx (455.0MK01.0002) BIOS

              The programmer gets delivered later today. upon reading the support list, it looks like my bios chip is not supported but I read on a post here https://www.badcaps.net/forum/showth...1216206&nojs=1 that mx77l12850f is interchangeable with W25R128JVSIQ (same voltage,capacity and pinout). Should I dump it using this chip profile? do you think it will work?
              Last edited by bombob; 03-24-2023, 06:50 AM.

                Comment

                • bombob
                  New Member
                  • Aug 2021
                  • 7
                  • usa
                  #5
                  Re: HP Envy 17M-ch0xxx (455.0MK01.0002) BIOS

                  Here is the dump for the laptop
                  Serial: 8CG12640QC
                  Win11 21H2
                  Attached Files

                    Comment

                    • hardware1
                      Badcaps Legend
                      • Sep 2021
                      • 2912
                      • N/A
                      #6
                      Re: HP Envy 17M-ch0xxx (455.0MK01.0002) BIOS

                      Originally posted by bombob
                      Here is the dump for the laptop
                      Serial: 8CG12640QC
                      Win11 21H2
                      Here's your New BIOS, it's a Virgin BIOS from HP with your DMI and Windows Key.
                      Attached Files
                      ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
                      Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests
                      all donations are welcome,
                      see the donate button at the bottom of the page, or
                      >>>>>                       click on this link to donate via PayPal. <<<<<
                      Every donation made will go towards server fees and maintenance costs.
                      ----------------------------------------------------------------------------------------------------------------------------------------------------------------------

                        Comment

                        • bombob
                          New Member
                          • Aug 2021
                          • 7
                          • usa
                          #7
                          Re: HP Envy 17M-ch0xxx (455.0MK01.0002) BIOS

                          Originally posted by hardware1
                          Here's your New BIOS, it's a Virgin BIOS from HP with your DMI and Windows Key.
                          Great I will let you know thanks

                            Comment

                            • bombob
                              New Member
                              • Aug 2021
                              • 7
                              • usa
                              #8
                              Re: HP Envy 17M-ch0xxx (455.0MK01.0002) BIOS

                              I fear its a board issue. Flashed ,verified. Dumped, compared.Still no go. tried powering without bios chip and its the same. My guess is that the Nuvoton microcontroller is bad

                                Comment

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