Dell Precision 690: Light Pattern Problem Description Suggested Resolution

Light Pattern Problem Description Suggested Resolution

No memory modules are detected.

• If you have one memory module

installed, reinstall it and restart the

computer.

• If you have two or more memory

modules installed, remove the

modules, reinstall one module, and

then restart the computer). If the

computer starts normally, reinstall an

additional module. Continue until

you have identified a faulty module or

reinstalled all modules without error.

• If available, install properly working

memory of the same type into your

computer.

• If the problem persists, contact Dell.

System board failure has occurred.

Contact Dell

for technical assistance

.

Memory modules are detected, but a

• Ensure that no special memory

memory configuration or compatibility

module/memory connector placement

error exists.

requirements exist.

• Verify that the memory modules that

you are installing are compatible with

your computer.

• Reinstall the memory modules and

restart the computer.

• If the problem persists, contact Dell.

Routine system activity preceding video

Watch your monitor for on-screen

initialization.

messages.

40 Quick Reference Guide