HP Xw9400 HP xw9400 Workstation - Service and Technical Reference Guide - Page 166

Table 6-14 Memory problems (continued) Problem Cause Solution Power LED flashes red 5 times, once every second, followed by a 2-second pause, and the workstation beeps 5 times. Memory is installed incorrectly or is bad. CAUTION: Disconnect AC power from the workstation before reseating or replacing components because there is power to the system board even when the workstation is powered down. 1. Ensure DIMMs are loaded in the correct slots. 2. Reseat DIMMs. 3. Replace DIMMs one at a time to isolate the faulty module. 4. Replace third-party memory with HP memory. 5. Replace the system board. A total of 4 GB of RAM is installed, yet the 32-bit OS only recognizes ? 3 GB. A 32-bit OS is limited by Use a video card that uses less on-board 4 GB of address space, memory. and some of the space is used by I/O devices. Solving processor problems Table 6-15 Processor problems Problem Cause Solution Poor performance is experienced. Power LED is red and stays on. Processor is hot. 1. Be sure the airflow to the workstation is not blocked. 2. Be sure the fans are connected and working properly (some fans only operate when needed). 3. Be sure the CPU heatsink is installed properly. Processor is not seated properly or not installed. CAUTION: Disconnect AC power from the workstation before reseating or replacing components because there is power to the system board even when the workstation is powered down. 1. Check to see that the processor is present. 2. Reseat the processor. 156 Chapter 6 System diagnostics and troubleshooting ENWW