Dell Vostro 420 Service Manual page 11

Code (repetitive Description
short beeps)
2 No memory modules
are detected.
3 Possible system board
failure.
4 RAM Read/Write
failure.
5 Real time clock failure.
Possible battery or
system board failure.
6 Video BIOS Test
Failure.
Suggested Resolution
• If two or more memory modules are
installed, remove the modules (see
"Replacing or Adding a Memory
Module" on page 104), and then reinstall
one module and restart the computer. If
the computer starts normally, continue
to install additional memory modules
(one at a time) until you have identified
a faulty module or reinstalled all
modules without error.
• If available, install working memory of
the same type into your computer (see
"Replacing or Adding a Memory
Module" on page 104).
• If the problem persists, contact Dell (see
"Contacting Dell" on page 137).
Contact Dell (see "Contacting Dell" on
page 137).
• Ensure that no special requirements for
memory module/connector placement
exist (see "Replacing or Adding a
Memory Module" on page 104).
• Ensure that the memory you are using is
supported by your computer.
• If the problem persists, contact Dell (see
"Contacting Dell" on page 137).
• Replace the battery (see "Coin-Cell
Battery" on page 117).
• If the problem persists, contact Dell (see
"Contacting Dell" on page 137).
Contact Dell (see "Contacting Dell" on
page 137).
Troubleshooting
11