FredS Posted October 6, 2010 Share Posted October 6, 2010 Hello, I just received my replacement memory (TWIN2x2048-8500C5D) that went faulty (I had 2 pairs giving 4GB in total, one pair stopped working). Thanks for an excellent service on this. However this new pair and the existing working pair do not work together, whereas the previous pair did. I have tested both pairs individually and everything is fine, but putting them all in at once causes POST 80h values of 22/25 (Reading SPD from memory DIMMs/Configuring memory) repeatedly, in other words the system does not boot up. I had been running two sets of TWIN2x2048-8500C5D i.e. 4GB for at least 18 months prior to the returned ones going faulty. This is what I have tried: Each module in each slot individually - works Pair A in all slots - works Pair B in all slots - works Pair A and 1 of Pair B - works (no longer dual channel though) Pair B and 1 of Pair A - works (no longer dual channel though) Pair A and Pair B - system does not boot. Pair B and Pair A - system does not boot. RMA memory: 5-5-5-15 2.10V ver1.5 Existing memory: 5-5-5-15 2.2V ver4.1 The BIOS memory settings are set to default. What can I do? I still only have 2GB of memory and am desperate to upgrade to 4GB. The RMA number was 7602270 Any help would be appreciated. This is driving me crazy. Link to comment Share on other sites More sharing options...
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