Hi all,
I have a bit of a problem with my motherboard's DIMM slots that I'm hoping you can help me get to the bottom of.
I recently installed a new CPU cooler (Noctua NH-D9L). Since installing it, DIMM slots B1 and B2 on my motherboard (ASUS Z270-AR) are causing POST failures. The system boots up fine as long as B1 and B2 are empty.
Tested all four of my RAM sticks (8GB Corsair LPX DDR4 3000) in A1+A2 slots and they all work fine.
When A1, A2, and B1 are filled, the POST State LEDs show CPU (red), followed by DRAM (green). When all four slots are filled, only DRAM (green) lights up.
During POST, I hit the MemOK! button on the motherboard. It ran through its tests and rebooted a few times, but still didn't successfully boot.
I've taken everything apart, re-seated all the components, and applied some air duster to the DIMM slots, CPU socket, and the underside of the CPU, suspecting some kind of contact issue. I even went as far as to carefully clean the DIMM slots and the underside of the motherboard with a toothbrush and a touch of isopropyl alcohol. No luck.
I'm worried I might have accidentally damaged something while installing the new cooler, but I could not see any damage to the CPU socket, nor the CPU itself, upon close inspection. The only other possible cause I can think of is the old backplate, which required a bit of force to remove from the underside of the board.
The CPU is an an Intel i7 7700K, in case that helps.
What do you think? Is my motherboard busted?
Cheers!
I have a bit of a problem with my motherboard's DIMM slots that I'm hoping you can help me get to the bottom of.
I recently installed a new CPU cooler (Noctua NH-D9L). Since installing it, DIMM slots B1 and B2 on my motherboard (ASUS Z270-AR) are causing POST failures. The system boots up fine as long as B1 and B2 are empty.
Tested all four of my RAM sticks (8GB Corsair LPX DDR4 3000) in A1+A2 slots and they all work fine.
When A1, A2, and B1 are filled, the POST State LEDs show CPU (red), followed by DRAM (green). When all four slots are filled, only DRAM (green) lights up.
During POST, I hit the MemOK! button on the motherboard. It ran through its tests and rebooted a few times, but still didn't successfully boot.
I've taken everything apart, re-seated all the components, and applied some air duster to the DIMM slots, CPU socket, and the underside of the CPU, suspecting some kind of contact issue. I even went as far as to carefully clean the DIMM slots and the underside of the motherboard with a toothbrush and a touch of isopropyl alcohol. No luck.
I'm worried I might have accidentally damaged something while installing the new cooler, but I could not see any damage to the CPU socket, nor the CPU itself, upon close inspection. The only other possible cause I can think of is the old backplate, which required a bit of force to remove from the underside of the board.
The CPU is an an Intel i7 7700K, in case that helps.
What do you think? Is my motherboard busted?
Cheers!