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Gateway 2000 4SX-25 error codes on start-up

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    Gateway 2000 4SX-25 error codes on start-up

    I just got this and the memory tests fine... then I get these numbers that change in this order: 330, 290, 210, 135 and 130. Keyboard lights up on POST but isn't functional after that. Any suggestions?

    I should mention that there are no drives connected yet... pretty much a bare bones set-up as of now.

    The computer beeps twice too and I'm pretty sure that the battery is new...

    Thank you
    Last edited by dafivehole; May 14, 2021, 02:47 PM.

    #2
    I dug around a bit but couldn't find anything showing what those POST codes mean. I'd assume that at least one of them is going to be related to the date/time being wrong, who knows what state the CMOS battery is in. If you say it has no drives in it either, that's most likely going to be what one of those other codes are as well. As for the keyboard not working, are you sure the keyboard is good? You might want to try it on another system, or another keyboard on that system.

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      #3
      The CMOS battery is fine... keyboard works fine now. I got into setup and played around with some changes, reset to defaults, etc with no change on start-up. I attached a hard drive and it recognizes it but the 3.5" floppy isn't recognized... one of the error codes mentions incorrect ISA setup... what the hell does that mean?

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        #4
        Does the CMOS setup allow address/IRQ assignments for ISA slots? Or perhaps your cards have conflicting address/IRQ settings.

        Comment


          #5
          I have no cards installed and the settings are at default... I found the motherboard type: https://stason.org/TULARC/pc/motherb...CLASSIC-R.html

          Also, If the memory is incorrect, will it still pass the memory test?
          Last edited by dafivehole; May 16, 2021, 05:55 AM.

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            #6
            It appears the board requires parity RAM. Are your RAM chips parity? You also stated the CMOS battery is fine. Did you or someone else recently replace it? A failing CMOS battery can sometimes cause erratic results.

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              #7
              How do you tell if the memory is "parity?" I have another battery that I can swap out... I assumed that this one was good since it held the date/time...

              Comment


                #8
                Originally posted by dafivehole View Post
                How do you tell if the memory is "parity?" I have another battery that I can swap out... I assumed that this one was good since it held the date/time...
                The ninth chip is used to store parity.
                Surely not everyone was Kung-Fu fighting
                SE Michigan

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                  #9
                  Originally posted by Agent Orange View Post

                  The ninth chip is used to store parity.
                  So each stick should have 9 chips on it?

                  Comment


                    #10
                    Originally posted by dafivehole View Post

                    So each stick should have 9 chips on it?
                    Correct.

                    Comment


                      #11
                      Well that's one problem... here's what was in there:

                      memory.png

                      Comment


                        #12
                        Originally posted by Agent Orange View Post

                        The ninth chip is used to store parity.
                        This only partially applies to 30 pin SIMMs. There are 5 and 3 chip parity modules as well. The better thing to look for is an odd number of memory chips on 30 pin SIMMs to determine if it's a parity module.

                        72 pin SIMMs are entirely different. Parity modules usually have 2-4 chips on the back of the module to make up the 36 bit width of a 72 pin parity module. Larger capacity SIMMs can have more memory chips used for parity.

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                          #13
                          Originally posted by dafivehole View Post
                          Well that's one problem... here's what was in there:

                          memory.png
                          I can't read the stickers on the left side of the chips. What's printed there?

                          Yes, the eight chips are a pretty sure indicator that these are non-parity (x32) versus parity (x36) sticks of RAM. The link you provided for the motherboard clearly shows each memory configuration using parity x36 combinations of chips. There *might* be a setting in CMOS to enable non parity use.

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                            #14
                            They say: Tested speed: 70ns 96

                            Thank you,
                            Roger

                            Comment


                              #15
                              Originally posted by kc8eyt View Post

                              I can't read the stickers on the left side of the chips. What's printed there?

                              Yes, the eight chips are a pretty sure indicator that these are non-parity (x32) versus parity (x36) sticks of RAM. The link you provided for the motherboard clearly shows each memory configuration using parity x36 combinations of chips. There *might* be a setting in CMOS to enable non parity use.
                              Definitely not parity modules. You can see where it has the option to be a parity module with the four pads at the top of the module for memory chips, and can probably be converted into a parity module if those chips were installed.

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