Control panel message

Description

Recommended action

 

 

 

 

Network Server Mode Active and No Keyboard

Keyboard failure while Network Server Mode

1.

Reconnect keyboard with computer

Attached

enabled.

 

turned off.

 

 

2.

Check connector for bent or missing pins.

 

 

3.

Ensure that none of the keys are

 

 

 

depressed.

 

 

4.

Replace keyboard.

 

 

 

Parity Check 2

Parity RAM failure.

Run Computer Setup and Diagnostic utilities.

 

 

 

 

Interpreting POST diagnostic front panel LEDs and audible codes

This section covers the front panel LED codes as well as the audible codes that may occur before or during POST that do not necessarily have an error code or text message associated with them.

WARNING! When the computer is plugged into an AC power source, voltage is always applied to 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.

NOTE: If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the computer and refer to the following table to determine the front panel LED codes.

Recommended actions in the following table are listed in the order in which they should be performed. Not all diagnostic lights and audible codes are available on all models.

Activity

Beeps

Possible cause

Recommended action

 

 

 

 

 

White Power LED On.

None

Computer on.

None

 

 

 

 

 

White Power LED flashes every

None

Computer in Suspend to

None required. Press any key or move the mouse to

two seconds.

 

RAM mode (some models

wake the computer.

 

 

only) or normal Suspend

 

 

 

 

mode.

 

 

 

 

 

 

Red Power LED flashes two

2

Processor thermal

1. Ensure that the computer air vents are not

times, once every second,

 

protection activated:

 

blocked and the processor cooling fan is

followed by a two second pause.

 

A fan may be blocked or not

 

running.

Beeps stop after fifth iteration

 

 

 

 

turning.

2. Open hood, press power button, and see if the

but LEDs continue until problem

 

 

 

 

processor fan spins. If the processor fan is not

is solved.

 

OR

 

 

 

spinning, make sure the fan's cable is plugged

 

 

 

 

 

 

 

 

 

The heat sink/fan assembly

 

onto the system board header.

 

 

 

 

 

 

is not properly attached to

3.

If fan is plugged in, but is not spinning, then

 

 

the processor.

 

 

 

replace heat sink/fan assembly.

 

 

 

 

 

 

 

4.

Contact an authorized reseller or service

 

 

 

 

provider.

 

 

 

 

Red Power LED flashes four

4

Power failure (power supply

1. Open the hood and ensure the 4 or 6-wire

times, once every second,

 

is overloaded).

 

power supply cable is seated into the

followed by a two second pause.

 

 

 

connector on the system board.

Beeps stop after fifth iteration

 

 

2.

Check if a device is causing the problem by

but LEDs continue until problem

 

 

is solved.

removing ALL attached devices (such as hard,

diskette, or optical drives, and expansion

 

 

cards). Power on the system. If the system

 

enters the POST, then power off and replace

 

one device at a time and repeat this procedure

Interpreting POST diagnostic front panel LEDs and audible codes 205

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HP 705 G1 manual Activity Beeps Possible cause Recommended action

705 G1 specifications

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