Troubleshooting Without Diagnostics

Solving Memory Problems (Continued)

Problem

Cause

Solution

 

 

 

 

Power LED flashes Red five

Memory is installed

1.

Reseat DIMMs. Power on the

times, once every second,

incorrectly or is bad.

 

system.

followed by a two second

 

2.

Replace DIMMs one at a time to

pause, and the computer

 

 

 

isolate the faulty module.

beeps five times. Beeps

 

 

 

3.

Replace third-party memory

continue for five iterations

 

 

 

with HP memory.

after which the LED flashes

 

 

 

4.

Replace the system board.

will continue until the

 

problem is resolved.

 

 

 

 

 

 

 

Solving Processor Problems

.

Solving Processor Problems

Problem

Cause

Solution

 

 

 

 

Poor performance is

Processor is hot.

1.

Make sure the airflow to the

experienced.

 

 

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.

 

 

 

 

Power LED flashes Red

Processor is not seated

1.

Check to see that the processor

three times, once every

properly or not

 

is present.

second, followed by a two

installed.

2.

Reseat the processor.

second pause, and the computer beeps three times. Beeps continue for five iterations after which the LED flashes will continue until the problem is resolved.

 

D–28

433612-001

Service Reference Guide, dc7700