Before You Start Testing; Beep Codes - Dell Precision 490 Quick Reference Guide

Starting the Dell Diagnostics From the Drivers and Utilities CD
1 Insert the Drivers and Utilities CD.
2 Shut down and restart the computer.
When the DELL logo appears, press <F12> immediately.
If you wait too long and the Windows logo appears, continue to wait until you see the Windows
desktop. Then shut down your computer and try again.
NOTE:
The next steps change the boot sequence for one time only. On the next start-up, the computer boots
according to the devices specified in the system setup program.
3 When the boot device list appears, highlight Onboard or USB CD-ROM Drive and press <Enter>.
4 Select the Boot from CD-ROM option from the menu that appears and press <Enter>.
5 Type 1 to start the menu and press <Enter> to proceed.
6 Select Run the 32 Bit Dell Diagnostics from the numbered list. If multiple versions are listed,
select the version appropriate for your computer.
7 When the Dell Diagnostics Main Menu appears, select the test you want to run.

Before You Start Testing

CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions in the
Product Information Guide.
• Turn on your printer if one is attached.
• Enter system setup, review your computer's configuration information, and enable all of your
computer's components and devices, such as connectors.

Beep Codes

Your computer might emit a series of beeps during start-up if the monitor cannot display errors or problems.
This series of beeps, called a beep code, identifies a problem. One possible beep code (code 1-3-1)
consists of one beep, a burst of three beeps, and then one beep. This beep code tells you that the
computer encountered a memory problem.
If your computer beeps during start-up:
1 Write down the beep code on the "Diagnostics Checklist" in your User's Guide.
2 Run the Dell Diagnostics to identify a more serious cause.
3 Contact Dell for technical assistance.
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Quick Reference Guide