Dell OptiPlex 740 DCCY, Quick Reference Manual

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Quick Reference Guide
If your computer beeps during start-up:
1
Write down the beep code.
2
See "Dell Diagnostics" on page 51 to identify a more serious cause.
3
Contact Dell for technical assistance. For information on contacting Dell,
see your online
User’s Guide .
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.
Windows Vista
1
Click Start and click Help and Support.
2
Type
hardware troubleshooter
in the search field and press
<Enter> to start the search.
In the search results, select the option that best describes the problem and
follow the remaining troubleshooting steps.
Windows XP
1
Click Start
→
Help and Support .
2
Type
hardware troubleshooter
in the search field and press
<Enter> to start the search.
3
In the Fix a Problem section, click Hardware Troubleshooter .
4
In the Hardware Troubleshooter list, select the option that best describes
the problem and click Next to follow the remaining troubleshooting steps.
Code Cause
2 short, 1 long BIOS checksum error
1 long, 2 short Memory test failure (bad memory during memory sizing)
1 long, 3 short, 2 short No memory
1 short <F12> key pressed