Cursed Ram!!

By AndyInvicto
Jun 16, 2006
  1. I'm having a really strange RAM issue, and not one that I've really seen anyone else talking about. First of all, the details....I believe I have a MSI 845 Ultra-AR (MS-6398) mother board and am trying to install a 512 MB DDR PC-2100 266 Mhz module DIMM ram.
    My computer is a school supplied Tangent computer that I'm trying to upgrade and only came with 256 MB of ram. When I install the 512 MB ram (I made sure it was the exact same type of RAM, just bigger) my computer runs absolutely perfectly if the 256 MB ram was still in. When the computer loads, it still claims that I am running 256 MB ram. When I check my bios, still claims its 256 MB. No crashes or anything, just does not work the way it should.
    I have tried installing the ram into every slot, and still nothing, it does the exact same thing.
    When I install the 512 with the 256, my computer really goes nuts, claims i'm running 1.2 something gig of ram and then crashes before windows can load.
    I've called the University Help Desk, and their only advice was to try putting it in different slots, which I already have done, so I guess I'm just asking for any kind of help that can be offered, Thanks!!
  2. N3051M

    N3051M TS Evangelist Posts: 2,115

    try runing just the 512 by itself??

    you know for maximum compatibility you should match not only the type and speed but also the memory size and the brand (if the mobo is that picky)
  3. AndyInvicto

    AndyInvicto TS Rookie Topic Starter

    I did, when running just the 512, my computer will still claim i'm using 256 still. In the bios, when loading, everything will say i'm using just 256. But everything loads and runs just fine, but the performance is that of the 256 ram, not the 512.
    I don't think the ram is bad, otherwise my computer wouldn't work, right? I'm prettysure that its the right type, because again, my computer runs fine just not with the performance that 512 MB of ram should give me.
  4. Tedster

    Tedster Techspot old timer..... Posts: 6,002   +15

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