v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v If an action step is preceded by “(Trained technician only),” that step must be performed only by a trained
technician.
v Go to the IBM support website at http://www.ibm.com/supportportal/ to check for technical information, hints,
tips, and new device drivers or to submit a request for information.
Diagnostic
code Message Description Action
W.58007 [W.58007] Invalid memory
configuration (Unsupported
DIMM Population) detected.
Please verify memory
configuration is valid.
Unsupported DIMM
Population.
Note: Each time you install or
remove a DIMM, you must
disconnect the server from the power
source; then, wait 10 seconds before
restarting the server.
1. Reseat the DIMMs, and then
restart the server.
2. Make sure that the DIMMs are
installed in the proper sequence
(see “Installing a memory
module” on page 34).
Chapter 4. Troubleshooting 131