Which is bios chip?

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  • lezsimply
    The Wanderer
    • Jan 2013
    • 657
    • Philippines
    #1

    Which is bios chip?

    I've got an old hp ze2000 that I'd like to flash bios. However I cannot identify which of the two is the right one. I want to flash bios because it has no power even after pressing power button. owner told me there's no previous issue, the laptop was just kept and haven't been used for almost 5 months. All voltages are ok even power button, it just doesn't seem to respond.

    On page 26 U27 (atmel 93C46) and on page 29 U11 (pm39lv040-70vc) I've got datasheets for both one but I don't understand some of its functions (Still got a lot to learn) Any help is appreciated. thanks all
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    • khaahk
      Badcaps Veteran
      • Dec 2013
      • 826
      • Estonia
      #2
      Re: Which is bios chip?

      U27 - network card flash (keeping mac address & other settings)
      U11 - system bios

        Comment

        • lezsimply
          The Wanderer
          • Jan 2013
          • 657
          • Philippines
          #3
          Re: Which is bios chip?

          Thanks khaahk, that's what I'm afraid of It will be very hard for me to remove it. But I need to try. I'll keep you posted man

            Comment

            • Learn2Day
              Badcaps Veteran
              • Jun 2013
              • 254
              • Portugal
              #4
              Re: Which is bios chip?

              Hey,

              I'm probably even less experienced that you, but if logic serves me right, U11 is the right chip.

              U27 is fully connected to LAN module, most pins connect to RTL8110 and the chip itself is powered by LAN Vcc.

              U11 is powered by 3V line directly.
              Galaxy S6 Edge x2 (Gold&White)
              Asus GL552VW-i7 6700HQ|GTX 960M|15.6"FHD|16GB DDR4|512GB M.2 SSD+1TB SSD
              Clevo W230SD - i7 4710MQ|GTX960M|13"QHD+|16GB DDR3L|500GB+256GB mSATA SSD+1TB HDD

              Try Harder!

                Comment

                • Learn2Day
                  Badcaps Veteran
                  • Jun 2013
                  • 254
                  • Portugal
                  #5
                  Re: Which is bios chip?

                  The time I took to answer proves my lack of experience. You got your answer before I could even answer..
                  Galaxy S6 Edge x2 (Gold&White)
                  Asus GL552VW-i7 6700HQ|GTX 960M|15.6"FHD|16GB DDR4|512GB M.2 SSD+1TB SSD
                  Clevo W230SD - i7 4710MQ|GTX960M|13"QHD+|16GB DDR3L|500GB+256GB mSATA SSD+1TB HDD

                  Try Harder!

                    Comment

                    • lezsimply
                      The Wanderer
                      • Jan 2013
                      • 657
                      • Philippines
                      #6
                      Re: Which is bios chip?

                      Nope you are right. I overlooked the evidence that u27 is connected to lan chip Already flashed U11 and preparing it to be soldered back to board. update you guys later

                        Comment

                        • stj
                          Great Sage 齊天大聖
                          • Dec 2009
                          • 31287
                          • Albion
                          #7
                          Re: Which is bios chip?

                          you should clean the solder off the flash & fit a socket on the board.

                            Comment

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