6Reconnect the system to the electrical outlet, and turn on the system and attached peripherals.

If the problem is not resolved, proceed to the next step.

7Repeat step 2 and step 3.

8Insert a different SD card or USB key that you know works properly.

9Close the system. See "Opening and Closing the System" on page 70.

10Reconnect the system to the electrical outlet, and turn on the system and attached peripherals.

If the problem is not resolved, see "Getting Help" on page 175.

Troubleshooting an Optical Drive

Problem

System cannot read data from a CD or DVD in an optical drive.

Optical drive indicator does not blink during boot.

Action

CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the computer and protecting against electrostatic discharge.

1Try using a different CD or DVD that you know works properly.

2Enter the System Setup program and ensure that the optical drive controller is enabled. See "Using the System Setup Program" on page 47.

3Run the appropriate online diagnostic test. See "Using Server Administrator Diagnostics" on page 161.

4Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.

5Open the system. See "Opening and Closing the System" on page 70.

6Ensure that the interface cable is securely connected to the optical drive and to the system board.

7Ensure that a power cable is properly connected to the drive.

Troubleshooting Your System

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Dell R805 owner manual Troubleshooting an Optical Drive, 153