Solving Processor Problems - HP dc7900 - Convertible Minitower PC Service & Reference Manual

Table D-13 Solving Memory Problems (continued)
Memory count during POST is wrong.
Cause
The memory modules may not be installed correctly.
Integrated graphics may use system memory.
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.
Power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five
times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause
Memory is installed incorrectly or is bad.

Solving Processor Problems

If you encounter processor problems, common causes and solutions are listed in the following table.
Table D-14 Solving Processor Problems
Poor performance is experienced.
Cause
Processor is hot.
Power LED flashes Red three times, once every second, followed by a two second pause.
Cause
Processor is not seated properly or not installed.
Solution
Check that the memory modules have been installed correctly
and that proper modules are used.
No action required.
Solution
Delete any TSRs that you do not need.
Check the memory requirements for the application or add
more memory to the computer.
Solution
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.
Solution
1. Make sure the airflow to the computer is not blocked.
2. Make sure the fans are connected and working properly
(some fans only operate when needed).
3. Make sure the processor heatsink is installed properly.
Solution
1. Check to see that the processor is present.
2. Reseat the processor.
Solving Processor Problems 265