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
4 GB of address space,
and some of the space is
used by I/O devices.
Use a video card that uses less on-board
memory.
Solving processor problems
Table 6-15 Processor problems
Problem Cause Solution
Poor performance is
experienced.
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.
Power LED is red and
stays on.
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.
Table 6-14 Memory problems (continued)
156 Chapter 6 System diagnostics and troubleshooting ENWW
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