If You Have a Problem
11 Troubleshooting Guide
My PC Doesn’t Start Properly
The PC Doesn’t Power On
Have you checked that...
How
The PC’s power cord is correctly connected
Connect the power cord to a grounded power outlet and to the PC
The PC’s power outlet is working
Plug another device into the power outlet and check that it works
The PC’s voltage switch is correctly set
1 Disconnect the power cord.
2 Select the correct setting on the voltage switch located beside the
power connector in the rear of the PC.
3 Reconnect the power cord.
4 Start the PC.
You did not hear a series of beeps when you turned
the PC on
If you hear a series of beeps when you turn the PC on, refer to
page 21.
The PC’s power-on LED lights when you press the
On/Off switch
If the LED does not light, check that the status panel connector is
connected correctly to the system board, refer to page 37.
The PC’s power supply is not in protected mode nor
is there a problem with ACPI power mode (after a
power failure for example)
1 Disconnect the power cord.
2 Wait for 20 seconds.
3 Reconnect the power cord.
4 Start the PC.
Advanced Troubleshooting
The problem is not being caused by an internal
device
1 Disconnect the PC’s power cord.
2 Remove the PC’s cover (refer to page 35).
3 Remove internal power connectors from all internal devices.
4 Reconnect the PC’s power cord.
5 Reconnect the power connectors one by one to the internal devices
to see which device is defective.
6 Contact your authorized support provider.
The power supply is working properly
1 When you power on the PC, check that the light on the On/Off button
comes on and that you hear the power supply fan.
2 If nothing happens, contact your authorized support provider. The
original power supply unit may have to be replaced.
If the problem persists, contact your authorized support provider
The Power-On Self Test Displays an Error
An on-screen error or a series of beeps when the PC starts means there is a configuration problem
Have you checked that...
How
The part of your configuration with which the
Power-On Self Test has detected an error
For more specific troubleshooting information, refer to “Software
Problems” on page 18
If you still have a problem
Run HP e-Diagtools (refer to page 28)
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