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
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.
System will not boot from CD-ROM or DVD drive.
Cause
Solution
The device is attached to a SATA port that has been hidden in the
Computer Setup utility.
Run the Computer Setup utility and ensure
Device Available
is
selected for the device's SATA port in
Security
>
Device Security
.
Removable Media Boot is disabled in the Computer Setup utility.
Run the Computer Setup utility and enable booting to removable
media in
Storage
>
Storage Options
. Ensure CD-ROM is enabled
in
Storage
>
Boot Order
.
Network Boot is enabled in Computer Setup.
Run the Computer Setup utility and disable Network Boot in
Security
>
Network Boot
.
Non-bootable CD in drive.
Try a bootable CD in the drive.
Boot order not correct.
Run the Computer Setup utility and change boot sequence in
Storage
>
Boot Order
.
Drive not found (identified).
Cause
Solution
Cable could be loose.
Check cable connections.
The system may not have automatically recognized a newly
installed device.
See reconfiguration directions in the
Solving Hardware
Installation Problems on page 187
section. If the system still does
not recognize the new device, check to see if the device is listed
within Computer Setup. If it is listed, the probable cause is a
driver problem. If it is not listed, the probable cause is a hardware
problem.
If this is a newly installed drive, run the Computer Setup utility
and try adding a POST delay under
Advanced
>
Power-On
Options
.
The device is attached to a SATA port that has been hidden in
Computer Setup.
Run the Computer Setup utility and ensure
Device Available
is
selected for the device's SATA port in
Security
>
Device Security
.
Drive responds slowly immediately after power-up.
Run Computer Setup and increase the POST Delay in
Advanced
>
Power-On Options
.
194 Chapter 8 Troubleshooting without diagnostics