Hello thanks for choosing Dell and welcome to our community.
If the memory modules are confirmed to be compatible (it is, in this case, I checked internally) and it's unlikely that three out of four are defective, then the next logical step is to check the memory slots on the motherboard.
Here are a few troubleshooting steps you can consider:
Reseat the Memory Modules Remove all modules and reinstall them carefully, ensuring they are fully seated in the slots.
Test Each Slot Individually Use a single known-good memory module and test it in each slot one by one. This will help identify if a specific slot is faulty.
Check for BIOS/UEFI Updates Sometimes, firmware updates improve memory compatibility or resolve detection issues.
Inspect for Physical Damage Look for bent pins, dust, or debris in the slots. Clean gently if needed.
DELL-Young E
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December 11th, 2025 02:21
Hello thanks for choosing Dell and welcome to our community.
If the memory modules are confirmed to be compatible (it is, in this case, I checked internally) and it's unlikely that three out of four are defective, then the next logical step is to check the memory slots on the motherboard.
Here are a few troubleshooting steps you can consider:
Remove all modules and reinstall them carefully, ensuring they are fully seated in the slots.
Use a single known-good memory module and test it in each slot one by one. This will help identify if a specific slot is faulty.
Sometimes, firmware updates improve memory compatibility or resolve detection issues.
Look for bent pins, dust, or debris in the slots. Clean gently if needed.
https://www.dell.com/support/kbdoc/en-us/000132726/how-to-run-hardware-diagnostics-on-your-poweredge-server
Respectfully,