[strike]Got a new Asus Z87M Plus (BIOS 0703) with 32GB of Kingston HyperX Beast (KHX24C11T3K4/32X). Whenever I plug memory into slot A1 or A2, the red memory LED comes on and the board refuses to boot. I can put any two sticks of memory into B1/B2 and boot with 16GB RAM using just about any combination of RAM-related settings in BIOS, no problem. It does prefer to auto-detect the RAM as 1333 instead of 2400, but 16GB in slots B1/B2 always works. Any RAM in A1/A2 always fails. [/strike]
Read some more postings, and found several who had problems with CPU sockets, coolers and so on. My missing info was i7 4770S CPU with a Cooler Master Seidon 120M liquid cooler.
I loosened the screws on the cooler and the spacers, also the screws that hold the motherboard to the cabinet. Popped out the CPU just to have a look for damage (found none) and put it back in. Now all RAM slots work OK, my guess is that the over-tightened screws caused tension in the motherboard or RAM sockets closest to the CPU.
Hope my mistake helps others with the same symptoms!
Read some more postings, and found several who had problems with CPU sockets, coolers and so on. My missing info was i7 4770S CPU with a Cooler Master Seidon 120M liquid cooler.
I loosened the screws on the cooler and the spacers, also the screws that hold the motherboard to the cabinet. Popped out the CPU just to have a look for damage (found none) and put it back in. Now all RAM slots work OK, my guess is that the over-tightened screws caused tension in the motherboard or RAM sockets closest to the CPU.
Hope my mistake helps others with the same symptoms!
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