•An individual cooling fan is removed or has failed. See "Troubleshooting a Fan."
Troubleshooting a Fan
CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
1Open the system. See "Opening the System."
CAUTION: The cooling fans are
2Locate the faulty fan indicated by the LCD panel or the diagnostic software.
3Reseat the fan. See "Removing a Cooling Fan" and "Replacing a Cooling Fan."
NOTE: Wait at least 30 seconds for the system to recognize the fan and determine whether it is working properly.
4If the problem is not resolved, install a new fan.
If the replacement fan does not operate, see "Getting Help."
Troubleshooting System Memory
CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
NOTE: Invalid memory configurations can cause your system to halt at startup without video output. See "General Memory Module Installation Guidelines" and verify that your memory configuration complies with all applicable guidelines.
1If the system is operational, run the appropriate online diagnostic test. See "Using Dell Online Diagnostics."
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