Your system contains several modular banks of random-access memory; each bank contains a SIMM. One or more of these SIMMs is either loose or faulty. You must correct the problem so your system and software applications can run reliably.
Follow these steps:
Shut down the system.
Refer to your Owner's Guide. It shows you how to visually identify a loose SIMM and re-seat it. If the SIMM is not loose, you may need to replace it. Contact your local support organization.
If your Owner's Guide does not contain information about SIMMs, contact your local support organization.