HP Vectra VL800 hp vectra vl800, troubleshooting guide - Page 9

Case 1 — If There Is No Activity At All, No hard disk drive or fan noise.

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1 Your PC Does Not Start Correctly Case 1 - If There Is No Activity At All Case 1 - If There Is No Activity At All When the power button is pressed, the PC shows no sign of activity at all. The monitor is blank, there is no sound from the hard disk drive or fan, or the status LED does not light up. • Monitor is blank. • No hard disk drive or fan noise. • Status LED does not light up. NOTE Before removing the cover, always switch off the display and PC. Disconnect the power cord and any accessory cables. When checks have been completed, close the PC and reconnect the power cord and accessory cables. Verify that the PC boots correctly. Symptom... PC does not start - the status LED indicator is not illuminated. If the PC still does not start Check that... The power cord is correctly connected. The power outlet is working. The voltage switch is correctly set (located on the rear of the PC). How... Connect the power cord to a grounded power outlet and the PC. Plug a light into the grounded power outlet and check it comes on. 1 Disconnect the power cord. 2 Select the correct setting. 3 Reconnect the power cord. 4 Start the PC. Check that... None of the internal devices are causing the problem. How... 1 Remove internal power connectors from all internal devices (except for the system board). 2 Reconnect the power cord. 3 Reconnect the power connectors one by one to the internal devices to see if a device is defective. 4 If a device is found to be defective, contact HP Support or your authorized dealer. Continued on the next page ³ 9

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9
1
Your PC Does Not Start Correctly
Case 1 — If There Is No Activity At All
Case 1 — If There Is No Activity At All
When the power button is pressed, the PC shows no sign of activity at
all. The monitor is blank, there is no sound from the hard disk drive or
fan, or the status LED does not light up.
•
Monitor is blank.
•
No hard disk drive or fan noise.
•
Status LED does not light up.
NOTE
Before removing the cover, always switch off the display and PC.
Disconnect the power cord and any accessory cables. When checks
have been completed, close the PC and reconnect the power cord and
accessory cables. Verify that the PC boots correctly.
Symptom...
Check that...
How...
PC does not start – the status
LED indicator is not illuminated.
The power cord is correctly connected.
Connect the power cord to a grounded power outlet and the
PC.
The power outlet is working.
Plug a light into the grounded power outlet and check it
comes on.
The voltage switch is correctly set (located
on the rear of the PC).
1
Disconnect the power cord.
2
Select the correct setting.
3
Reconnect the power cord.
4
Start the PC.
If the PC still does not start
Check that...
How...
None of the internal devices are causing the
problem.
1
Remove internal power connectors from all internal
devices (except for the system board).
2
Reconnect the power cord.
3
Reconnect the power connectors one by one to the
internal devices to see if a device is defective.
4
If a device is found to be defective, contact HP Support or
your authorized dealer.
Continued on the next page