HP Vectra XU 6/XXX HP Vectra XU 6/xxx Pc User’s Guide - d4369-90001 - Page 92

If Your PC Has a Hardware Problem

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4 Troubleshooting Your PC and Using the Setup Program If Your PC Has a Hardware Problem If Your PC Has a Hardware Problem This section describes what to do if you have problems with your display, disk drives, printer, accessory boards, keyboard, or mouse. If Your Display Does Not Work If nothing is displayed on the screen, but the PC starts and the keyboard, disk drives, and other peripheral devices seem to operate properly: 1 Check that the brightness and contrast controls are properly set. 2 Make sure that the display is plugged in and switched ON. 3 Ensure that the display video cable is correctly connected to the display and to the PC. 4 Switch off the display, and unplug it from the power outlet. Examine the video cable pins to see if they are bent. If they are, carefully straighten them. If the display image is not aligned with the screen (usually when you change resolutions), use the display's controls to center the image. Refer to the display manual for instructions. If the screens generated by your software applications do not appear correct, check the application's manual to find out which video standard is required. Also check your display manual to find out which refresh rate is required. Use the HP Setup program (or the MGA Millennium setup program) to select the correct refresh rate. If the display works correctly during the Power-On-Self-Test (POST), but goes blank when the operating system starts: • Restart the PC and check that the amount of video memory detected by the POST is correct. If you have installed extra video memory and only 2 MB is detected, check that the video memory module is installed correctly on the video accessory board (see page 46). 80 English

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4
Troubleshooting Your PC and Using the Setup Program
If Your PC Has a Hardware Problem
80
English
If Your PC Has a Hardware Problem
This section describes what to do if you have problems with your
display, disk drives, printer, accessory boards, keyboard, or mouse.
If Your Display Does Not Work
If nothing is displayed on the screen, but the PC starts and the
keyboard, disk drives, and other peripheral devices seem to operate
properly:
1
Check that the brightness and contrast controls are properly set.
2
Make sure that the display is plugged in and switched ON.
3
Ensure that the display video cable is correctly connected to the
display and to the PC.
4
Switch off the display, and unplug it from the power outlet. Examine
the video cable pins to see if they are bent. If they are, carefully
straighten them.
If the display image is not aligned with the screen (usually when you
change resolutions), use the display’s controls to center the image.
Refer to the display manual for instructions.
If the screens generated by your software applications do not appear
correct, check the application’s manual to find out which video
standard is required. Also check your display manual to find out which
refresh rate is required. Use the HP
Setup
program (or the MGA
Millennium setup program) to select the correct refresh rate.
If the display works correctly during the Power-On-Self-Test (POST),
but goes blank when the operating system starts:
•
Restart the PC and check that the amount of video memory detected
by the POST is correct. If you have installed extra video memory and
only 2 MB is detected, check that the video memory module is
installed correctly on the video accessory board (see page 46).