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Help with BIOS of Acer Travelmate P258 ZRW

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    Help with BIOS of Acer Travelmate P258 ZRW

    Dear friends,
    I have troubles with laptop Acer Travelmate P258-M. With attached BIOS laptop starts with blank screen, all powers up and consumes about 0,45A. But there must be some issue with the BIOS.
    I tried many other BIOSes from this and other sites, but always get just 0,11A with no VCORE and other CPU powers.

    Can somebody help with my original BIOS?

    MB is DA0ZRWMB6G0 rev G UMA
    Attached Files

    #2
    Re: Help with BIOS of Acer Travelmate P258 ZRW

    try
    Attached Files

    Comment


      #3
      Re: Help with BIOS of Acer Travelmate P258 ZRW

      Thank you Gayyum786, but still the same, after start about 0,45A, after while drops to 0,31A, with lcd connected 0,52A to 0,37A, but with no image and no sign of any light on lcd.

      I dont understand, why this is only BIOS that powers up all power rails, with all other images of UMA or DSC boards starts only with 0,11A and no CPU voltages.

      Comment


        #4
        Re: Help with BIOS of Acer Travelmate P258 ZRW

        try this one.
        Attached Files
        Last edited by SMDFlea; 01-01-2021, 08:49 AM.
        All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

        Comment


          #5
          Re: Help with BIOS of Acer Travelmate P258 ZRW

          Thanks SMDFLea, but no power on CPU, ampere is 0,11.

          This is really strange

          Comment


            #6
            Re: Help with BIOS of Acer Travelmate P258 ZRW

            Originally posted by sopik78 View Post
            Thanks SMDFLea, but no power on CPU, ampere is 0,11.

            This is really strange
            It isn`t always a bios problem.Check the power on sequence on page 45 in the schematic - https://www.badcaps.net/forum/showthread.php?t=81122 .Good luck
            All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

            Comment


              #7
              Re: Help with BIOS of Acer Travelmate P258 ZRW

              try
              Attached Files

              Comment


                #8
                Re: Help with BIOS of Acer Travelmate P258 ZRW

                Thank you both.

                But no CPU power and image on screen with fixed BIOS dump and EC dump. Using original BIOS and new EC all powers up, but no image as well.

                Comment

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