Compaq dx7500 Service Reference Guide: HP Compaq dx7500 Business PC - Page 183

Table C-13 Solving Memory Problems (continued) Out of memory error. Cause Solution Memory configuration may not be set up correctly. Use the Device Manager to check memory configuration. You have run out of memory to run the application. 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 Solution Too many Terminate and Stay Resident programs (TSRs) are Delete any TSRs that you do not need. installed. You have run out of memory for the application. Check the memory requirements for the application or add more memory to the computer. The computer emits one short beep then one long beep followed by a three second pause. Cause Solution Memory is installed incorrectly or is bad. 1. Reseat DIMMs. Power on the system. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. Solving CD-ROM and DVD Problems If you encounter CD-ROM or DVD problems, see the common causes and solutions listed in the following table or to the documentation that came with the optional device. Table C-14 Solving CD-ROM and DVD Problems System will not boot from CD-ROM or DVD drive. Cause Solution The device is attached to a SATA port that has been disabled Run the Computer Setup utility and ensure SATA1 in the Computer Setup utility. Controller is Enabled in the Advanced menu. Solving CD-ROM and DVD Problems 173