Interpreting Post Diagnostic Front Panel Leds And Audible Codes - HP 200 G1 Microtower Maintenance & Service Manual

Table C-1 Numeric Codes and Text Messages (continued)
Control panel message
Invalid Electronic Serial Number
Network Server Mode Active and No
Keyboard Attached
Parity Check 2
Interpreting POST Diagnostic Front Panel LEDs and
Audible Codes
During the system validation phase, the BIOS will validate the functionality of the CPU, memory,
graphics, system board and all other platform components. Since the display may not be functional, the
power button LED and the speaker will be used to indicate an error. The speaker will be used so that a
support agent can detect the error code over the phone. The pattern of the blink/beep error indicator
will be 1 blink/beep per second followed by a 2 second pause at the end of the sequence. The
sequence will repeat for 5 cycles. After the 5 cycles are complete, only the blink will continue.
WARNING!
the system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be
sure to disconnect the power cord from the wall outlet and allow the internal system components to cool
before touching.
Test
CPU
BIOS
Memory
Graphics
System board
BIOS
Description
Electronic serial number is missing.
Keyboard failure while Network Server
Mode enabled.
Parity RAM failure.
When the computer is plugged into an AC power source, voltage is always applied to
Failure
CPU not functional
BIOS corruption
Module error
No controller
Other failure
Authentication failure, if supported

Interpreting POST Diagnostic Front Panel LEDs and Audible Codes

Recommended action
Enter the correct serial number in Computer
Setup.
1.
Reconnect keyboard with computer
turned off.
2. Check connector for bent or missing
pins.
3.
Ensure that none of the keys are
depressed.
4.
Replace keyboard.
Run Computer Setup and Diagnostic utilities.
Power
button LED
1 blink
2 blinks
3 blinks
4 blinks
5 blinks
6 blinks
Speaker
1 beep
2 beeps
3 beeps
4 beeps
5 beeps
6 beeps
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