Announcement

Collapse
No announcement yet.

ASUS PRIME B550M-A AC weird behavior

Collapse
This topic has been answered.
X
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    ASUS PRIME B550M-A AC weird behavior

    Hello, I need a little help

    I got an ASUS PRIME B550M-A AC Motherboard, bad BIOS, it wont display or boot, unless I did CMOS Restart first, after that It will boot but if I modified the configuration of the bios and saved it ,again no image

    I got the BIOS .CAP file from ASUS official support, used a tool called ASUS CAP to BIN, and programmed it to the IC, soldered to the board and got it to boot correctly, all the way to Windows, but now the CPU fan stays at full speed all the time and if I try to power it off with power button it will restart instead, and there are probably more issues I have not seen.

    Any help will be appreciated

    Original dump attached

    Thank you in advance, cheers!

    post moved...
    Attached Files
    Tags: None
  • Answer selected by RotVik at 05-09-2025, 10:03 AM.
    Originally posted by RotVik View Post

    Thank you your answer and you are right, I uploaded it wrong, here is the correct one I hope 32,768KB

    Cheers!
    try..
    Attached Files
    • Selected Answer

    Comment

      #2
      Originally posted by RotVik View Post
      Hello, I need a little help

      I got an ASUS PRIME B550M-A AC Motherboard, bad BIOS, it wont display or boot, unless I did CMOS Restart first, after that It will boot but if I modified the configuration of the bios and saved it ,again no image

      I got the BIOS .CAP file from ASUS official support, used a tool called ASUS CAP to BIN, and programmed it to the IC, soldered to the board and got it to boot correctly, all the way to Windows, but now the CPU fan stays at full speed all the time and if I try to power it off with power button it will restart instead, and there are probably more issues I have not seen.

      Any help will be appreciated

      Original dump attached

      Thank you in advance, cheers!

      post moved...
      the bios posted is longer...copy and post again...

      The bios chip must be unsoldered from the board before writing or reading..
      do not use the clip, you may have errors..if you do not have anything to unsolder it with,
      solder wires between the programmer and the bios chip..
      Due to a lack of donations, server free space at a critical level, and possible closure of Bios Requests all donations are welcome, click:

      >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

      Every donation made will go towards server fees and maintenance costs.

      Comment

        #3
        Originally posted by peste View Post

        the bios posted is longer...copy and post again...

        The bios chip must be unsoldered from the board before writing or reading..
        do not use the clip, you may have errors..if you do not have anything to unsolder it with,
        solder wires between the programmer and the bios chip..
        Thank you your answer and you are right, I uploaded it wrong, here is the correct one I hope 32,768KB

        Cheers!
        Attached Files

        Comment

          #4
          Originally posted by RotVik View Post

          Thank you your answer and you are right, I uploaded it wrong, here is the correct one I hope 32,768KB

          Cheers!
          try..
          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, click:

          >>>>> https://www.badcaps.net/index.php?pageid=donate1 <<<<<

          Every donation made will go towards server fees and maintenance costs.
          • Selected Answer

          Comment

            #5
            Originally posted by peste View Post

            try..
            Hello!, I can confirm that this BIOS is working, CPU Fan and QFan control are responding and not at full speed all the time anymore, also powering off is working correctly, will continue testing all the way to Windows and report if necessary.

            Thank you very much for your help!

            Comment

            Previous template Next
            Working...
            X