3 Troubleshooting Your PC

If Your PC Has a Hardware Problem

If Nothing is Displayed on the Screen

If the display works correctly during the Power-On-Self-Test (POST), but goes blank when Windows starts:

•Check that you have enough memory for the video mode you have selected.

•If your screen’s refresh rate is set too high, the screen might be blank. If you have Windows NT 4.0, you can start Windows in “safe mode” which will allow you to change the display settings. To learn how to start Windows in “safe mode”, refer to the operating system documentation.

a If your display is DDC compliant, ensure that Video Plug & Play display is enabled. This field is in the Video section of the Configuration menu.

b If your display is not DDC compliant, Video Plug & Play display must be disabled. This field is in the Video section of the Configuration menu. Also, check the refresh settings in the Video section to ensure they are not too high.

To know if your display is DDC compliant, refer to the display documentation.

If nothing is displayed on the screen at all, but the PC starts and the keyboard, disk drives, and other peripheral devices seem to operate properly:

•Make sure that the display is plugged in and switched ON.

•Check that you have entered a password if you have set the keyboard and mouse to “locked”. You can change this setting in the Setup program. Refer to "Security Menu Items" (refer to "HP Setup Program", on page 66).

•Check that the brightness and contrast controls are properly set.•Ensure that the display video cable is correctly connected.

•Switch off the display, and unplug it from the power outlet. Disconnect the video cable and examine the video cable connector pins. If the pins are bent, carefully straighten them.

•Check that the video upgrade is properly installed if you have one.

•Check that an accessory board doesn’t use the same I/O address as the integrated video interface (03B0h to 03DFh). Refer to the manual supplied with the accessory for further information.

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