Brand new system: i5 12400f, B660m Gaming X Ax DDR4, RX 6600xt, 32g DRAM (2x16)
*Ran memtest86 on new system and found multiple failures on same data bit (sometimes stuck high, sometimes stuck low).
*My dimms are slotted in slots A2 and B2.
*I removed the dimm in slot B2 to isolate the problem
*Memtest86 passes cleanly with one dimm in slot A2
*Computer functions with no issues in normal mode with one dimm (gaming, surfing, streaming etc) in slot 2.
*I ordered some new memory (2 more dimms since they came 2 in a pack) since I figured the dimm in slot 4 may have been bad.
*The new dimms arrived today. I plugged one of them into slot B2 and reran memtest86. It failed on the same data bit (handful of errors over the entire test).
*I plugged the second new dimm into slot B2 and memtest86 fails in the same data bit
*At this point, 3 brand new dimms have failed in slot B2 so I am assuming it is now the MB or the CPU.
*I moved the dimms to slots A1 and B1 but the computer will not boot.
*I removed the dimm from slot B1 and just tried to boot from the dimm in slot A1 but the computer won't boot.
*I moved the dimm back to slot A2 and the computer boots as normal.
Is there a jumper or something I need to change if I move from slots A2 and B2 to slots A1 and/or B1? It seems like the CPU just does not see any memory when I am in slot A1 and/or B1...
This is my MB.
https://download.gigabyte.com/FileList/Manual/mb_manual_b660m-gaming-x-series_e_n.pdf
if you have any other debugging suggestions I would be happy to hear them...
*Ran memtest86 on new system and found multiple failures on same data bit (sometimes stuck high, sometimes stuck low).
*My dimms are slotted in slots A2 and B2.
*I removed the dimm in slot B2 to isolate the problem
*Memtest86 passes cleanly with one dimm in slot A2
*Computer functions with no issues in normal mode with one dimm (gaming, surfing, streaming etc) in slot 2.
*I ordered some new memory (2 more dimms since they came 2 in a pack) since I figured the dimm in slot 4 may have been bad.
*The new dimms arrived today. I plugged one of them into slot B2 and reran memtest86. It failed on the same data bit (handful of errors over the entire test).
*I plugged the second new dimm into slot B2 and memtest86 fails in the same data bit
*At this point, 3 brand new dimms have failed in slot B2 so I am assuming it is now the MB or the CPU.
*I moved the dimms to slots A1 and B1 but the computer will not boot.
*I removed the dimm from slot B1 and just tried to boot from the dimm in slot A1 but the computer won't boot.
*I moved the dimm back to slot A2 and the computer boots as normal.
Is there a jumper or something I need to change if I move from slots A2 and B2 to slots A1 and/or B1? It seems like the CPU just does not see any memory when I am in slot A1 and/or B1...
This is my MB.
https://download.gigabyte.com/FileList/Manual/mb_manual_b660m-gaming-x-series_e_n.pdf
if you have any other debugging suggestions I would be happy to hear them...