Did my DIMM channel just die?

[M1904]

So this afternoon I performed surgery to replace my failing/defective AIO. After getting everything back together and without buttoning it up I fired it up and we sat in POST with EZ Debug punching up against the DRAM LED pretty aggressively I might add.

cleared CMOS and when it didn't boot i knew i had a problem. I let it chill and modulate for another hour or so thinking that it may just be having a hard time figuring out the new hardware as i did have a decent overclock on AND had to do *another* clean install of Windows 11 this morning.

Long story short that obviously didn't help so i started troubleshooting. I got to the DIMMS and put one stick in Channel A, slot 2 (A2) Not boot. Cycled through all four sticks with the same result. Then I switched over to Channel B slot 2 (B2) and it lit up like a Like ignition from a rocket launch. Tried all the rest of the sticks, they worked. Tried both slots in Channel B, both would take. But, in Channel A if either slot is being utilized at all it won't boot. Again it'll try aggressively to get it to boot (as this is stock, default settings) but doesn't get through. Any thoughts?

Setup is:

• MSI Z690 Edge Wifi DDR4
• 12900k
• GSkill Trident Z Neo XMP 4000, 16gb x4 - F4-4000C18D-32GTZN
• Just installed Artic Cooler Freezer ii
• Zotac Nvidia GTX 1070 AMP
• Nvidia P1000 x2
• x2 HDD's
• x3 NVMe M2's
• Be Quiet! Dark Base 700
• Like nine fans

Any help would be appreciated as I use this PC for work and utilize almost all of that 64gb on a daily basis.

Thanks in advance!

 

[Alan J T]

So this afternoon I performed surgery to replace my failing/defective AIO. After getting everything back together and without buttoning it up I fired it up and we sat in POST with EZ Debug punching up against the DRAM LED pretty aggressively I might add.

cleared CMOS and when it didn't boot i knew i had a problem. I let it chill and modulate for another hour or so thinking that it may just be having a hard time figuring out the new hardware as i did have a decent overclock on AND had to do *another* clean install of Windows 11 this morning.

Long story short that obviously didn't help so i started troubleshooting. I got to the DIMMS and put one stick in Channel A, slot 2 (A2) Not boot. Cycled through all four sticks with the same result. Then I switched over to Channel B slot 2 (B2) and it lit up like a Like ignition from a rocket launch. Tried all the rest of the sticks, they worked. Tried both slots in Channel B, both would take. But, in Channel A if either slot is being utilized at all it won't boot. Again it'll try aggressively to get it to boot (as this is stock, default settings) but doesn't get through. Any thoughts?

Setup is:

• MSI Z690 Edge Wifi DDR4
• 12900k
• GSkill Trident Z Neo XMP 4000, 16gb x4 - F4-4000C18D-32GTZN
• Just installed Artic Cooler Freezer ii
• Zotac Nvidia GTX 1070 AMP
• Nvidia P1000 x2
• x2 HDD's
• x3 NVMe M2's
• Be Quiet! Dark Base 700
• Like nine fans

Any help would be appreciated as I use this PC for work and utilize almost all of that 64gb on a daily basis.

Thanks in advance!

Kind of sounds like you tried most of what should be done. Um reseat CPU or check Cooler mounting pressure is correct.

 

[M1904]

Update to this: I just hot plugged both DIMMs and the system survived it. The system is now reading all 64gb but also saying only one channel is active.

Both DIMMs had the RGB light up, but they're unresponsive to Mystic Light.

 

[badboy2k]

Update to this: I just hot plugged both DIMMs and the system survived it. The system is now reading all 64gb but also saying only one channel is active.

Both DIMMs had the RGB light up, but they're unresponsive to Mystic Light.

did you make sure you did not over torque the cooler as Intel CPU's are very Sensative to having too much pressure on them as the PCB on the CPU is very thin and may Flex making the edges lift off the pins

 

[M1904]

did you make sure you did not over torque the cooler as Intel CPU's are very Sensative to having too much pressure on them as the PCB on the CPU is very thin and may Flex making the edges lift off the pins

Literally doing this right now.

 

[M1904]

Literally doing this right now.

Yahtzee.

i originally only loosened the cooler a smidge, and that did nothing. So i went about finalizing cable management and then decided to reseat the CPU, and it worked. I also took 1/16th a turn out of the torx screws holding the clasp in place as i had shimmed them earlier to get rid of some of that flex that came stock. It seems like it could have been a stacking tolerance issue. But paste coverage was uniform so i’m not sure.

regardless, it’s posting and booting with both channels now. Thank you guys for the tip.

 

[Alan J T]

Yahtzee.

i originally only loosened the cooler a smidge, and that did nothing. So i went about finalizing cable management and then decided to reseat the CPU, and it worked. I also took 1/16th a turn out of the torx screws holding the clasp in place as i had shimmed them earlier to get rid of some of that flex that came stock. It seems like it could have been a stacking tolerance issue. But paste coverage was uniform so i’m not sure.

regardless, it’s posting and booting with both channels now. Thank you guys for the tip.