Troubleshooting External Connections; Troubleshooting The Video Subsystem - Dell PowerEdge NM176 Hardware Owner's Manual

Table 4-2. IRQ Assignment Defaults (continued)
IRQ Line Assignment
Available
IRQ6
Available
IRQ7
IRQ8 Real-time clock
IRQ9 ACPI functions (used for power management)
Available
IRQ10
Available
IRQ11
IRQ12 PS/2 mouse port (available if the mouse is disabled through the System
Setup program)
IRQ13 Math coprocessor
Available
IRQ14
Available
IRQ15

Troubleshooting External Connections

Loose or improperly connected cables are the most likely source of problems for
the system, monitor, and other peripherals (such as a printer, keyboard, mouse,
or other external device). Ensure that all external cables are securely attached to
the external connectors on your system. See Figure 1-1 for the front-panel
connectors and Figure 1-2 for the back-panel connectors on your system.

Troubleshooting the Video Subsystem

Problem
• Monitor is not working properly.
• Video memory is faulty.
Troubleshooting Your System
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