Upgraded my desktop with new ASUS TUF X299 Mark 2 mobo, CPU, and DRAM. POST will complete if either of 2 dimms installed individually, but POST fails if both dimms installed. Details: CPU Intel i9 9820x Skylake 10 core 3.3 GHz, DRAM Corsair DDR4 Vengeance LPX 2666 32 GB (2 x 16 GB), Cooler Master ML120L.
If one dimm is installed in A1 slot, POST works and Win 10 boots. If two dimms installed in A1 and C1 slots (recommended by ASUS) POST fails. Attempted solutions: pressed MemOK button, POST tries tuning through 3 stages, then fails. Tried EZ tuning to overclock, no change. Updated BIOS from 1503 to 1704. Tested both dimms by installing each one in A1, both work ok individually. Installed dimms in A1 and A2, or A1 and B2, no success.Made sure XMP was enabled. Checked DRAM frequency and timings, frequency shows 1600.
I can use PC with 16 GB, but am obviously perplexed by not getting 32 GB. And yes, I checked that Corsair DRAM was on the ASUS QVL list (ver 4.31 listed, my package shows no ver number).
If one dimm is installed in A1 slot, POST works and Win 10 boots. If two dimms installed in A1 and C1 slots (recommended by ASUS) POST fails. Attempted solutions: pressed MemOK button, POST tries tuning through 3 stages, then fails. Tried EZ tuning to overclock, no change. Updated BIOS from 1503 to 1704. Tested both dimms by installing each one in A1, both work ok individually. Installed dimms in A1 and A2, or A1 and B2, no success.Made sure XMP was enabled. Checked DRAM frequency and timings, frequency shows 1600.
I can use PC with 16 GB, but am obviously perplexed by not getting 32 GB. And yes, I checked that Corsair DRAM was on the ASUS QVL list (ver 4.31 listed, my package shows no ver number).