Compaq 315eu Maintenance and Service Guide - Compaq 100eu Small Form Factor, 1 - Page 184

Solving Memory Problems If you encounter memory problems, some common causes and solutions are listed in the following table. CAUTION: Power may still be supplied to the DIMMs when the computer is turned off. To avoid damage to the DIMMs or the system board, you must unplug the computer power cord before attempting to reseat, install, or remove a DIMM module. For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory. Otherwise, the computer will not boot the operating system. System will not boot or does not function properly after installing additional memory modules. Cause Solution A memory module is not seated properly in the socket. Reseat the memory module. Ensure that the locks on each side of the module are in the closed position. Memory module is not the correct type or speed grade for the system or the new memory module is not seated properly. Replace module with the correct industry-standard device for the computer. On some models, ECC and non-ECC memory modules cannot be mixed. Out of memory error. Cause Memory configuration may not be set up correctly. You have run out of memory to run the application. Solution Use the Device Manager to check memory configuration. Check the application documentation to determine the memory requirements. Memory count during POST is wrong. Cause The memory modules may not be installed correctly. Integrated graphics may use system memory. Solution Check that the memory modules have been installed correctly and that proper modules are used. No action required. Insufficient memory error during operation. Cause Too many Terminate and Stay Resident programs (TSRs) are installed. You have run out of memory for the application. Solution Delete any TSRs that you do not need. Check the memory requirements for the application or add more memory to the computer. 174 Chapter 11 Troubleshooting Without Diagnostics