Beep Codes; Resolving Software And Hardware Incompatibilities - Dell OptiPlex 740 Guía De Referencia Rápida

Light Pattern Problem Description
A failure has occurred.
This pattern also displays when you enter
system setup and may not indicate a
problem (see the User's Guide).
After POST is complete, all four
diagnostic lights turn green briefly before
turning off to indicate normal operating
condition.

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.
If your computer beeps during start-up:
1 Write down the beep code.
2 See "Dell Diagnostics" on page 38 to identify a more serious cause.
3 Contact Dell for technical assistance. For information on contacting Dell, see your online User's
Guide.
Code
2 short, 1 long
1 long, 2 short
1 long, 3 short, 2 short No memory
1 short

Resolving Software and Hardware Incompatibilities

If a device is either not detected during the operating system setup or is detected but incorrectly
configured, you can use the Hardware Troubleshooter to resolve the incompatibility.
1 Click the Start button and click Help and Support.
2 Type hardware troubleshooter in the Search field and click the arrow to start the search.
3 Click Hardware Troubleshooter in the Search Results list.
4 In the Hardware Troubleshooter list, click I need to resolve a hardware conflict on my computer, and
click Next.
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Quick Reference Guide
All manuals and user guides at all-guides.com
Cause
BIOS checksum error
Memory test failure (bad memory during memory sizing)
F12 key pressed
Suggested Resolution
• Ensure that the cables are properly
connected to the system board from the
hard drive, and optical drive.
• Check the computer message that
appears on your monitor screen.
• If the problem persists, contact Dell.
None.