HP Vectra VE C/xxx 7 HP Vectra VE C/xxx Series 7 PC - Upgrade and Maintenance - Page 70

If There Is Nothing Displayed on the Screen

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4 Troubleshooting Your PC If There Is Nothing Displayed on the Screen If There Is Nothing Displayed on the Screen Problem Check How PC's power indicator light and hard disk activity light work but the screen remains blank. Display is correctly Refer to the display's manual for an explanation of the LED switched ON (LED is on). signals (green, orange, or blinking). Display power cord is correctly connected. Connect the power cord - ensure it is plugged into a grounded power outlet and the monitor. Display power outlet is Plug a light into the grounded power outlet and check it working. illuminates. Whether you hear beeps when the PC starts. Refer to the beep codes described on page 68. If the monitor still does not work Display brightness and contrast settings are correct. Refer to the display's manual, as needed. If the monitor still does not work The video cable pins are not damaged. • Switch off and unplug the monitor. • Disconnect the video cable and straighten any bent pins. • Reconnect the video cable. • Switch on the display and see if it works. If the monitor still does not work The PC's video is working. • Replace the monitor by a known working monitor from another similar PC. • If the monitor starts, contact HP Support or your authorized dealer, the monitor might need replacing. If the monitor still does not work The PC's video board is working. • Disconnect the power cord. • Open the PC. • Install a known good video board. • Reconnect the power cord. • Reconnect the monitor to the video board. • If the monitor starts, inform HP Support or your authorized dealer that the video board might be defective. 60 English

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4
Troubleshooting Your PC
If There Is Nothing Displayed on the Screen
60
English
If There Is Nothing Displayed on the Screen
Problem
Check
How
PC’s power indicator
light and hard disk
activity light work but
the screen remains
blank.
Display is correctly
switched ON (LED is on).
Refer to the display’s manual for an explanation of the LED
signals (green, orange, or blinking).
Display power cord is
correctly connected.
Connect the power cord – ensure it is plugged into a
grounded power outlet and the monitor.
Display power outlet is
working.
Plug a light into the grounded power outlet and check it
illuminates.
Whether you hear
beeps when the PC
starts.
Refer to the beep codes described on page 68.
If the monitor still does not work
Display brightness and
contrast settings are
correct.
Refer to the display’s manual, as needed.
If the monitor still does not work
The video cable pins are
not damaged.
•
Switch off and unplug the monitor.
•
Disconnect the video cable and straighten any bent pins.
•
Reconnect the video cable.
•
Switch on the display and see if it works.
If the monitor still does not work
The PC’s video is
working.
•
Replace the monitor by a known working monitor from
another similar PC.
•
If the monitor starts, contact HP Support or your
authorized dealer, the monitor might need replacing.
If the monitor still does not work
The PC’s video board is
working.
•
Disconnect the power cord.
•
Open the PC.
•
Install a known good video board.
•
Reconnect the power cord.
•
Reconnect the monitor to the video board.
•
If the monitor starts, inform HP Support or your
authorized dealer that the video board might be defective.