hp 15-ac126tu 3 times caps lock blink

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  • estabilito
    Senior Member
    • Aug 2020
    • 54
    • poland

    #1

    hp 15-ac126tu 3 times caps lock blink

    I have hp 15-ac126tu And after turning on caps lock blink 3 times and repeat after a while. On hp website i can read that this is ram problem so i changed the ram modules for surely working ones and still no results - 3 blinks anyway.
    This laptop use ddr3l but i even checked the normal ddr3 and same result.
    All voltages are present, screen only goes black(polarization).
    I've tried to reprogram bios too, same result.
    Under the thermal cam i can see that the cpu have hot spot, should i be sure that this is problem with this hybrid cpu/pch?
    Cpu coil is around 16-20 ohms.
    i3-5005u.
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  • mcplslg123
    Badcaps Legend
    • Jun 2015
    • 7262
    • india

    #2
    Re: hp 15-ac126tu 3 times caps lock blink

    With this information, no one can help you. Check ram ic requirement and voltage on ram slot. Cpu will get hot when turned on. I beleive you have cpu core present and likely DRAMRST# is missing. Revert back with your readings.

    Comment

    • estabilito
      Senior Member
      • Aug 2020
      • 54
      • poland

      #3
      Re: hp 15-ac126tu 3 times caps lock blink

      There is 1.35v on ram slot, cpu is getting hot after turned on - this is normal but only 30% of cpu is getting hot, rest is cold.

      Comment

      • mcplslg123
        Badcaps Legend
        • Jun 2015
        • 7262
        • india

        #4
        Re: hp 15-ac126tu 3 times caps lock blink

        Check voltage on pin30 of ram slot for DRAMRST#

        Comment

        • estabilito
          Senior Member
          • Aug 2020
          • 54
          • poland

          #5
          Re: hp 15-ac126tu 3 times caps lock blink

          Only 0.125v

          Comment

          • mcplslg123
            Badcaps Legend
            • Jun 2015
            • 7262
            • india

            #6
            Re: hp 15-ac126tu 3 times caps lock blink

            This should be 1.35V and without it there cannot be post. So check your ram ic requirement first. MB part number is LA-C701P??

            Comment

            • estabilito
              Senior Member
              • Aug 2020
              • 54
              • poland

              #7
              Re: hp 15-ac126tu 3 times caps lock blink

              yes but i killed the cpu propably when testing voltages, my bad, thanks for help anyway.

              Comment

              • mcplslg123
                Badcaps Legend
                • Jun 2015
                • 7262
                • india

                #8
                Re: hp 15-ac126tu 3 times caps lock blink

                So Sad....

                Comment

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