Dell Precision 390 Guía De Referencia Rápida página 40

Light Pattern Problem Description
No memory modules are detected.
System board failure has occurred.
40
Quick Reference Guide
Suggested Resolution
1
Reseat the memory modules to ensure
that your computer is successfully
communicating with the memory.
2
Restart the computer.
3
If the problem still exists, remove all
the memory modules and install one
memory module in memory module
connector 4.
4
Restart the computer.
The following message appears:
Alert! Operating in Debug
Mode. Please Populate
Memory in Pairs for Normal
Operation.
5
Press <F1> to boot to the operating
system.
6
Run the Dell Diagnostics. See page 34
for instructions.
7
If the memory module passes, shut
down the computer, remove the
memory module, and then repeat the
process with the remaining memory
modules until a memory error occurs
during start-up or diagnostic testing.
If the first memory module tested is
defective, repeat the process with the
remaining modules to ensure that the
remaining modules are not defective.
8
When the defective memory module
is identified, contact Dell for a
replacement.For instructions on
contacting Dell, see your User's Guide.
NOTE:
If necessary, the computer can
operate in debug mode until new memory
modules are installed.
Contact Dell for technical assistance.
For instructions on contacting Dell,
see your User's Guide.