HP dc72 Guia de Início Rápido descarregar pdf (Página 28)

System does not power on and the LEDs on the front of the computer are not flashing.

Cause

Solution

System unable to power on. Press and hold the power button for less than 4

seconds. If the hard drive LED turns green, then:

1. Check that the voltage selector, located on

the rear of the power supply on some models,

is set to the appropriate voltage. Proper

voltage setting depends on your region.

2. Remove the expansion cards one at a time

until the 5V_aux light on the system board

turns on.

3. Replace the system board.

Press and hold the power button for less than 4

seconds. If the hard drive LED does not turn on

green then:

1. Check that the unit is plugged into a working

AC outlet.

2. Open hood and check that the power button

harness is properly connected to the system

board.

3. Check that both power supply cables are

properly connected to the system board.

4. Check to see if the 5V_aux light on the system

board is turned on. If it is turned on, then

replace the power button harness.

5. If the 5V_aux light on the system board is off,

then replace the power supply.

6. Replace the system board.

Solving Hardware Installation Problems

You may need to reconfigure the computer when you add or remove

hardware, such as an additional drive or expansion card. If you install a

plug and play device, Windows automatically recognizes the device and

configures the computer. If you install a non–plug and play device, you must

reconfigure the computer after completing installation of the new hardware.

In Windows, use the Add Hardware Wizard and follow the instructions that

appear on the screen.

Table 1 Solving General Problems (continued)

20 Quick Setup & Getting Started ENWW

1 2 ... 23 24 25 26 27 28 29 30 31

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