It has been working fine for last 2 years or so, Recently, my PSU died and I had to replace the PSU. After PSU replacement, I notice that system is picking up only 16GB of RAM instead of 24GB. I moved the sticks around in different slots but same thing - system and BIOS only see 16GB of RAM.
Interestingly, utilities like 'System Information for Windows (SIW)' and CPU-Z show installed memory as 20GB.
Does this mean some sort of issue with the memory slots on the motherboard itself? Should I replace the motherboard?