Are both DIMMs the same brand?  Are they both registered? Is one or both a combo 100/133, or are they both on PC-133.  Will it work with only one DIMM?  Have you tried each one separately?  Windows 95/98 has some problems with large amounts of RAM.  If you don't have some special need for 512 MB, try it with only one DIMM since 256 Mb is usually good enough for most applications.  512 Mb is overkill unless you have applications that need it, and even then Windows may have a problem with that much RAM.
>
>I don't mix the new DIMMs with old ones. In this moment i only have two
>DIMMs (2 x 256MB PC133).
>The brand of the new memorys is very important?
>
>regards,
>
>Ing. Aldo M. Ruiz Ponce
>Ciudad de La Habana
>CUBA.
>
>-----Mensaje original-----
>De: Goran Halfvarson [mailto:[log in to unmask]]
>Enviado el: Jueves, 06 de Septiembre de 2001 2:56
>Para: [log in to unmask]
>Asunto: Re: [PCBUILD] Problem with 256 MB DIMM PC133
>
>
>Aldo,
>
>I had similar problems when adding a 256 to my 2 x 128.
>
>I switched locations of the DIMMs a few times.
>I appears that all permutations except the initial one works.
>
>Now, I see you did not mix your new DIMMs with old ones,
>so maybe there is not much to swap....
>Anyway, try at least to reseat the DIMMs.
>
>
>Regards,
>Goran Halfvarson, Lund, Sweden
>
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