HP 1105 Maintenance & Service Guide HP Pro 1105 All-in-One Business PC - Page 142

Activity, Beeps, Possible Cause, Recommended Action, Disable TXT in the Computer Setup F10

Page 142 highlights

Activity Red Power LED flashes six times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Beeps 6 Red Power LED flashes 7 seven times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Red Power LED flashes eight 8 times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Red Power LED flashes nine 9 times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Red Power LED flashes ten 10 times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Red Power LED flashes 11 eleven times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Possible Cause Recommended Action Pre-video graphics error. For systems with a graphics card: 1. Reseat the graphics card. 2. Replace the graphics card. 3. Replace the system board. For systems with integrated graphics, replace the system board. System board failure (ROM detected failure prior to video). Replace the system board. Invalid ROM based on bad checksum. 1. Reflash the system ROM with the latest BIOS image. 2. Replace the system board. System powers on but is unable to boot. Bad option card. The current processor does not support a feature previously enabled on this system. 1. Unplug the AC power cord from the computer, wait 30 seconds, then plug the power cord back in to the computer. 2. Replace the system board. 3. Replace the processor. 1. Check each option card by removing the card (one at a time if multiple cards), then power on the system to see if fault goes away. 2. Once a bad card is identified, remove and replace the bad option card. 3. Replace the system board. 1. Install a TXT capable processor. 2. Disable TXT in the Computer Setup (F10) utility. 3. Reinstall the original processor. Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 135

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Activity
Beeps
Possible Cause
Recommended Action
Red Power LED flashes six
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue
until problem is solved.
6
Pre-video graphics error.
For systems with a graphics card:
1.
Reseat the graphics card.
2.
Replace the graphics card.
3.
Replace the system board.
For systems with integrated graphics, replace
the system board.
Red Power LED flashes
seven times, once every
second, followed by a two
second pause. Beeps stop
after fifth iteration but LEDs
continue until problem is
solved.
7
System board failure
(ROM detected failure
prior to video).
Replace the system board.
Red Power LED flashes eight
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue
until problem is solved.
8
Invalid ROM based on
bad checksum.
1.
Reflash the system ROM with the latest
BIOS image.
2.
Replace the system board.
Red Power LED flashes nine
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue
until problem is solved.
9
System powers on but is
unable to boot.
1.
Unplug the AC power cord from the
computer, wait 30 seconds, then plug the
power cord back in to the computer.
2.
Replace the system board.
3.
Replace the processor.
Red Power LED flashes ten
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue
until problem is solved.
10
Bad option card.
1.
Check each option card by removing the
card (one at a time if multiple cards), then
power on the system to see if fault goes
away.
2.
Once a bad card is identified, remove and
replace the bad option card.
3.
Replace the system board.
Red Power LED flashes
eleven times, once every
second, followed by a two
second pause. Beeps stop
after fifth iteration but LEDs
continue until problem is
solved.
11
The current processor
does not support a
feature previously
enabled on this system.
1.
Install a TXT capable processor.
2.
Disable TXT in the Computer Setup (F10)
utility.
3.
Reinstall the original processor.
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes
135