My Intel 975xbx (rev. 304) will accept three 1 GB sticks of Corasair XMS memory, but when I put a fourth stick in, I get the three beeps and it won't post. I have tried all four sticks in different combinations, so it isn't a particular module that is "bad". I followed the voltage settings recommended by Corsair and have tried altering them, but I can't get all four to work at the same time. They were all purchased together, by the way. I can't find anything on Intel's site or Corsair's sited about a known problem. Any help would be appreciated.

Thanks,

Bill

32 bit PCs accept a max of 4gb ram and as RAM sticks are not exactly 1024mb each it causes probs

Have you tried enabling the PAE?

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