An administrator is upgrading memory on the server. Once the server in turned back on, the administrator notices that the memory has not changed. The system board website says the board should…

Replacing memory chips with known good ones is a valid troubleshooting step, but it's typically done after reseating fails, as reseating addresses the most common installation error.

Reseating the memory chips is the most common and immediate first step after installing new RAM if it's not recognized, as a module might not be fully seated or correctly aligned in its slot, preventing proper electrical contact. This addresses the most frequent installation error before assuming hardware failure or software issues.

Updating the BIOS might be necessary if the motherboard firmware doesn't support newer memory types or densities, but it's less likely to be the first step if the system board website indicates support and the memory was just installed.

Upgrading the server OS is irrelevant to the hardware's ability to recognize physical memory; the operating system reads memory information from the BIOS/UEFI.