Desktop Computer Hardware Maintenance Manual

Beep symptoms
Beep symptoms are tones or a series of tones separated by pauses (intervals
without sound) during POST.
The following tables describes beep symptoms.
Beep Symptom FRU/Action
2 short beeps
CMOS setting error
Perform the following actions in order.
1. Start the Setup Utility program and press
F10 to Save and exit. See Chapter 6,
“Using the Setup Utility,” on page 49.
2. Start the Setup Utility program and press
F9 to load defaults and then press F10 to
Save and exit.
3. Perform a Boot-block recovery. See
“Recovering from a POST/BIOS update
failure” on page 656.
1 long and 2 short beeps
Monitor or video adapter card error
Perform the following actions in order.
1. Make sure the monitor is properly
connected to the computer.
2. Replace the video adapter card (if
present).
3. Replace the system board.
1 long and 9 short beeps
BIOS ROM error
Perform the following actions in order.
1. Start the Setup Utility program and press
F9 to load defaults and then press F10 to
Save and exit. See Chapter 6, “Using the
Setup Utility,” on page 49.
2. Perform a Boot-block recovery. See
“Recovering from a POST/BIOS update
failure” on page 656.
3. Replace the system board.
Continuous long beeps
DRAM memory error
Perform the following actions in order.
1. Make sure the memory module(s) are
properly seated in the connector(s).
2. Replace the memory module(s).
3. Replace the system board.
76 Hardware Maintenance Manual