Compaq ProLiant 1000 ProLiant Server Troubleshooting Guide - Page 212

POST Error Messages Table C-9: 800 Series POST Error Messages continued Error Code Audible Beeps Probable Source of Problem 804-100MHz memory is incompatible. System Halted None A memory module other than 133-MHz ECC Registered SDRAM DIMM has been detected. 805-Unsupported Processor Detected System will ONLY boot ROMPAQ Utility. 805-The bootstrap processor is not the lowest stepping processor in the system. This is unsupported configuration. Swap the position of the processors on the system board to correct this issue. None None One or both processors are unsupported. The system has detected that the processors in the system are not the same stepping and that the processor in processor slot 1 has a lower stepping than the processor in processor slot 2. The processor in processor slot 2 must have the same or lower stepping than the processor in processor slot 1. (Processor stepping is a designation that reflects the processor generation.) Action 1. Reseat all memory modules in the system. 2. Remove incompatible memory modules as indicated. 3. Sequentially try each memory module individually in DIMM slot 1 to identify the incompatible memory module. Install supported processors. 1. Remove the processor from processor slot 1. 2. Remove the processor from processor slot 2. 3. Install the processor from processor slot 1 into processor slot 2. 4. Install the remaining processor into the available processor slot. continued C-32 HP Servers Troubleshooting Guide