Troubleshooting Your System; Troubleshooting System Startup Failure; Troubleshooting External Connections - Dell E31S Series Owner's Manual

Safety first — for you and your 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 are shipped with your product.
Topics:
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Troubleshooting system startup failure

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Troubleshooting external connections

• Troubleshooting the video subsystem
• Troubleshooting a USB device
• Troubleshooting iDRAC Direct (USB XML configuration)
• Troubleshooting iDRAC Direct (Laptop connection)
• Troubleshooting a serial I/O device
• Troubleshooting a NIC
• Troubleshooting a wet system
• Troubleshooting a damaged system
• Troubleshooting the system battery
• Troubleshooting power supply units
• Troubleshooting cooling problems
• Troubleshooting cooling fans
• Troubleshooting system memory
• Troubleshooting an internal USB key
• Troubleshooting an SD card
• Troubleshooting an optical drive
• Troubleshooting a tape backup unit
• Troubleshooting a hard drive
• Troubleshooting a storage controller
• Troubleshooting expansion cards
• Troubleshooting processors
• System messages
Troubleshooting system startup failure
If you boot the system to the BIOS boot mode after installing an operating system from the UEFI Boot Manager, the system stops
responding. To avoid this issue, you must boot to the same boot mode in which you installed the operating system.
For all other startup issues, note the system messages that appear on the screen.
Troubleshooting external connections
Before troubleshooting any external devices, ensure that all external cables are securely attached to the external connectors on your
system before troubleshooting any external devices.
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Troubleshooting your system

Troubleshooting your system
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