I recently attempted to increase memory from 2 1-GB sticks to 4 1-GB sticks using the same brand and P/N of memory (Crucial CT2KIT12864AA800). The board worked with ANY 3 of the sticks in ANY 3 of the slots, meaning all sticks and all slots are good. However when adding a 4th stick in ANY slot I get a 3-beep code and the board won't boot or show anything. Tried adjusting timing parameters in the BIOS, re-flashing the BIOS (latest version 0572) and reloading relevant drivers, but nothing changed. It currently has 3 slots loaded and Windows displays 3 GB. Is there anything more that can be adjusted, or is the board bad? Thanks.
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