From a newsgroup post: "First, upgrade the serversí BIOS. If error still exists, this looks like bad memory or bad slot on the system plane. Try the following:
1. Shutdown the system and power cycle the machine. Turn it back on, run the Compaq tools (F10 at boot), and run a memory test. If the memory is reported as bad, move to next step.
2. Remove memory from a slot without problems and insert in the slot with the problem. Run Compaq tools (F10 at boot). If the memory is reported as bad, the slot is damaged. Get tech to replace system plane, possibly the motherboard. You can also run the machine without memory in the damaged slot.
3. If no error is found after step 2, the memory stick is bad and should be replaced".
For additional information, see the link to "Correctable Or Uncorrectable Memory Errors May Occur On ProLiant DL580 G2 Servers".