Troubleshooting Your System; Safety First-For You And Your System; Troubleshooting System Startup Failure; Troubleshooting External Connections - Dell E14S Series Owner's Manual

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Troubleshooting your system

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.

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.

Ensure that all external cables are securely attached to the external connectors on your system before

troubleshooting any external devices.

Check the system and power connections to the monitor.

Check the video interface cabling from the system to the monitor.

Run the appropriate diagnostic test.

If the tests run successfully, the problem is not related to video hardware.

If the tests fail, see

Getting

About this task

Use the following steps to troubleshoot a USB keyboard/mouse. For other USB devices, go to step 7.

Steps

Disconnect the keyboard and mouse cables from the system and reconnect them.

If the problem persists, connect the keyboard/mouse to the USB ports on the opposite side of the

system.

If the problem is resolved, restart the system, enter the System Setup, and check if the non-

functioning USB ports are enabled.

Help.

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