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154 | Troubleshooting Your System
Troubleshooting a Damaged System
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.
1 Turn off the system and attached peripherals, and disconnect the
system from the electrical outlet.
2 Open the system. See "Opening the System" on page 117.
3 Ensure that the following components are properly installed:
• Expansion-card assembly
• Power supplies
• Fans
• Processors and heat sinks
• Air ducts
• Memory modules
• Hard-drive carriers
4 Ensure that all cables are properly connected.
5 Close the system. See "Closing the System" on page 118.
6 If the system fails to start, see "Getting Help" on page 179.
Troubleshooting the System Battery
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 Re-enter the time and date through the System Setup program. See
“System Setup Options at Boot” on page 26.
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.