Dell HR675 owner manual Checking the Equipment, Troubleshooting External Connections

Table 4-1. Start-Up Routine Indications (continued)

Look/listen for: Action

The USB CD drive activity indicator. See "Troubleshooting an Optical Drive" on page 151.

The hard-drive activity indicator.

See "Troubleshooting a Hard Drive" on page 153.

An unfamiliar constant scraping or grinding sound when you access a drive.

See "Getting Help" on page 175.

Checking the Equipment

This section provides troubleshooting procedures for external devices attached to the system, such as the monitor, keyboard, or mouse. Before you perform any of the procedures, see "Troubleshooting External Connections" on page 134.

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 "Front-Panel Features and Indicators" on page 13 and "Back-Panel Features and Indicators" on page 16 for the front- and back-panel connectors on your system.

Troubleshooting the Video Subsystem

Problem

•Monitor is not working properly.

•Video memory is faulty.

134

Troubleshooting Your System