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• Expansion-card risers (if present)
• Expansion cards
• PSUs
• Cooling fan assembly (if present)
• Cooling fans
• Processor(s) and heat sink(s)
• Memory modules
• HDD or SSD carriers
• HDD or SSD backplane
4. Make sure that all cables are properly connected.
5. Install the system cover.
6. Run the appropriate diagnostic test. For more information, see Using system diagnostics in this
document.
If the tests fail, see Getting help in this document.
Troubleshooting system battery
CAUTION: Many repairs may only be done by a certified service technician. You should perform
only 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: If the system is turned off for long periods of time (for weeks or months), the NVRAM may
lose its system configuration information. This situation is caused by a defective battery.
1. In System Setup, reenter the time and date.
2. Turn off the system and disconnect it from the electrical outlet for at least one hour.
3. Reconnect the system to the electrical outlet and turn on the system.
4. Open the System Setup page by pressing <F2> when the company logo is displayed.
If the date and time are not correct in the System Setup, check the SEL for system battery messages.
If the issue persists, see Getting help in this document.
NOTE: Some software may cause the system time to speed up or slow down. If the system seems
to operate normally except for the time set on the System Setup page, the issue may be caused by
software rather than by a defective battery.
Troubleshooting PSUs
CAUTION: Many repairs may only be done by a certified service technician. You should perform
only 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.
Reseat the PSU by removing and reinstalling it.
NOTE: After installing a PSU, allow several seconds for the system to recognize the PSU and to
determine if it is working properly.
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