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Light Pattern | Problem Description | Suggested Resolution |
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| No memory modules are detected. | 1 Reseat the memory modules to ensure |
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| that your computer is successfully |
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| 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 DIMM_1.
4 Restart the computer.
A message appears stating that because your memory is not paired, the system will operate with reduced performance and reduced error- correction capability
5 Press <F1> to boot to the operating system.
6 Run the Dell Diagnostics. See your User’s Guide for more information.
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
8 When the defective memory module is identified, contact Dell for a replacement.
Quick Reference Guide
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