Dell 6540 cmos battery ( no data )

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  • Rekoo1997
    Member
    • Oct 2018
    • 22
    • Egypt
    #1

    Dell 6540 cmos battery ( no data )

    Hi
    Dell model : la-9411p
    Laptop it working power only (no data ) if connect cmos battery but if remove cmos battery and turn on laptop working fine but if restart no data


    I have tried flashing more bios
    And cleared me but still problem
    Please call help me
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 14023
      • Canada
      #2
      Re: Dell 6540 cmos battery ( no data )

      Hi.

      What is the meaning of 'no data' ?

      The cmos battery is used to hold your real time clock settings, the hardware configuration like hard drive parameters, the boot priority, etc.

      Is this what is lost when you remove the CMOS battery? This is normal.

        Comment

        • Rekoo1997
          Member
          • Oct 2018
          • 22
          • Egypt
          #3
          Re: Dell 6540 cmos battery ( no data )

          Originally posted by mon2
          Hi.

          What is the meaning of 'no data' ?

          The cmos battery is used to hold your real time clock settings, the hardware configuration like hard drive parameters, the boot priority, etc.

          Is this what is lost when you remove the CMOS battery? This is normal.
          "No data " I meaning the laptop running power but no display and no response
          And power supply current 1.2 amp
          But if I remove cmos battery all things working fine
          Last edited by Rekoo1997; 10-10-2021, 10:16 AM.

            Comment

            • mcplslg123
              Badcaps Legend
              • Jun 2015
              • 7262
              • india
              #4
              Re: Dell 6540 cmos battery ( no data )

              I faced the same issue on a latitude E6420 LA-6591P. It was resolved by flashing bios though i tried atleast 7-8 dumps and fortunately one worked. So very likely its a bios issue.

                Comment

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