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HP 15-cb002ng no picture after CMOS reset

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    HP 15-cb002ng no picture after CMOS reset

    Hi,
    I have a strange fault with this notebook, MB Nr. is
    G75A DAG75AMBAD0 REV: D

    Backlight goes on, but no picture. Caps blinking 5x long, 3x short, meaning
    "This condition indicates the embedded controller cannot reach the BIOS within the established time limit" regarding to HP

    Whenever I unplug battery and charger, message "CMOS has been reset..." after hitting enter, again, only backlight, no picture and Capslock blinking.

    I tried to clear ME already, no changes (original dump attached)

    Any ideas?
    Attached Files
    Last edited by REpairAT; 06-27-2022, 01:28 PM.

    #2
    Re: HP 15-cb002ng no picture after CMOS reset

    test and report
    Attached Files

    Comment


      #3
      Re: HP 15-cb002ng no picture after CMOS reset

      Originally posted by Aditya11ttt View Post
      test and report
      No POST or backlight at all with this bin.

      BR, Ray

      Comment


        #4
        Re: HP 15-cb002ng no picture after CMOS reset

        Originally posted by REpairAT View Post
        No POST or backlight at all with this bin.

        BR, Ray
        HP Pavilion Power - 15-cb002ng
        Attached Files


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          #5
          Re: HP 15-cb002ng no picture after CMOS reset

          After leaving it running and turning off/on again multiple times, both files above stuck at "Flashing Boot Block 53%"
          I assume, there's another problem with the mainboard. I read some issues with an XTAL causing this caps blink error, but on another model. Anyone has an idea?

          BR,
          Ray

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