A technician is troubleshooting a server with the following components:
Two CPUs

Memory installed in sockets A1, A2, A3, A4, A5, A6, B1, B2, B3, B4, B5 and B6

Expansion cards installed in all expansion slots

6x 1 TB drives configured as a RAID 6 virtual disk

The server has the following symptoms:
CPU2 has failed

Memory in slots B1, B2, B3, B4, B5 and B6 is not accessible

Some of the expansion cards have gone offline.

What should the technician do to resolve this issue?