Server does not start

Troubleshooting steps

Check the four 12-volt power LEDs (A, B, C, and D) on the system board.
If the Channel A power LED lights up:
1. Remove all PCIe cards and riser cards.
2. Try restarting the server.
3. If the server starts, reinstall the PCIe cards and riser cards, one at a time, to isolate the defective card. Restart the server after reinstalling each PCI riser card.
If the Channel D power LED lights up:
1. Remove all DIMMs and restart the server.
2. If the server restarts, reinstall the DIMMs, one pair at a time, to isolate the defective DIMM. Restart the server after installing each DIMM.