HP ProLiant Gen8 Troubleshooting Guide Volume I: Troubleshooting

Hardware problems 60
11.
Be sure the video driver is current. For driver requirements, see the third-party video adapter
documentation.
Monitor does not function properly with energy saver features
Action: Be sure the monitor supports energy saver features, and if it does not, disable the features.
Video colors are wrong
Action:
• Be sure the 15-pin VGA cable is securely connected to the correct VGA port on the server and to the
monitor.
• Be sure the monitor and any KVM switch are compatible with the VGA output of the server.
• Be sure that the VGA cable is not damaged. Replace the cable with a known working cable.
Slow-moving horizontal lines are displayed
Action: Be sure magnetic field interference is not occurring. Move the monitor away from other monitors or
power transformers.
Mouse and keyboard problems
Action:
1. Be sure no loose connections (on page 17) exist. If a KVM switching device is in use, be sure the server
is properly connected to the switch.
o For rack-mounted servers, check the cables to the switch box and be sure the switch is correctly set
for the server.
o For tower model servers, check the cable connection from the input device to the server.
2. If a KVM switching device is in use, be sure all cables and connectors are the proper length and are
supported by the switch. Refer to the switch documentation.
3. Be sure the current drivers for the operating system are installed.
4. Be sure the device driver is not corrupted by replacing the driver.
5. Restart the system and check whether the input device functions correctly after the server restarts.
6. Replace the device with a known working equivalent device (another similar mouse or keyboard).
o If the problem still occurs with the new mouse or keyboard, the connector port on the system I/O
board is defective. Replace the board.
o If the problem no longer occurs, the original input device is defective. Replace the device.
7. Be sure the keyboard or mouse is connected to the correct port. Determine whether the keyboard lights
flash at POST or the NumLock LED illuminates. If not, change port connections.
8. Be sure the keyboard or mouse is clean.