Troubleshooting Your System | 133
Troubleshooting System Startup Failure
If your system halts during startup, especially after installing an operating
system or reconfiguring your system’s hardware, check for invalid memory
configurations. These could cause the system to halt at startup without any
video output. See "System Memory" on page 82.
For all other startup issues, note any system messages that appear onscreen.
See "Using the System Setup Program” on page 30 for more information.
Troubleshooting External Connections
Ensure that all external cables are securely attached to the external
connectors on your system before troubleshooting any external devices. See
Figure 1-1, Figure 1-3, and Figure 1-6 for the front- and back-panel
connectors on your system.
Troubleshooting the Video Subsystem
1 Check the system and power connections to the monitor.
2 Check the video interface cabling from the system to the monitor.
Troubleshooting a USB Device
Use the following steps to troubleshoot a USB keyboard and/or mouse.
For other USB devices, go to step 5.
1 Disconnect the keyboard and mouse cables from the system briefly and
reconnect them.
2 Connect the keyboard/mouse to the USB port(s) on the opposite side
of the system.
3 If the problem is resolved, restart the system, enter the System Setup
program, and check if the nonfunctioning USB ports are enabled.