Chapter 6. Troubleshooting 59Memory problemsSymptom ActionThe amount of memorydisplayed is less than theamount of memoryinstalled.The amount of available memory shown might be somewhatless than expected because of basic input/output system(BIOS) shadowing and other resource requirements (such asACPI and USB). Verify that:1. You have installed the correct type of DIMMs for yourcomputer. See “Installing memory” on page 40.2. The DIMMs are properly installed and securelyconnected.3. If you added or removed memory, you saved the newconfiguration before exiting from the IBM Setup Utilityprogram.If the problem persists, run the memory test from thediagnostic program supplied with your computer. (See“Running the IBM Enhanced Diagnostics program” on page66 for further information.) The computer might havedetected a bad DIMM and automatically reallocated memoryso that it could continue to operate.If you cannot correct the problem, have the computerserviced.
