Dell OptiPlex 5050 Tower Owners Manual - Page 71
Troubleshooting your computer, Diagnostic power LED codes
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7 Troubleshooting your computer You can troubleshoot your computer using indicators like diagnostic lights, and error messages during the operation of the computer. Topics: • Diagnostic power LED codes • Power LED issue • Dell Enhanced Pre-Boot System Assessment (ePSA) diagnostic 3.0 • Diagnostic error messages • System error messages • Power Supply Unit PSU Built-in Self Test BIST Diagnostic power LED codes Table 25. Diagnostic power LED codes Power LED light status Off Steady/blinking amber Blinking white light Possible cause Troubleshooting steps The computer is either turned ● Re-seat the power cable in off or is not receiving power the power connector on or in Hibernation mode. the back of the computer and the electrical outlet. ● If the computer is plugged into a power strip, ensure that the power strip is plugged into an electrical outlet and is turned on. Also, bypass power protection devices, power strips, and power extension cables to verify that the computer turns on properly. ● Ensure the electrical outlet is working by testing it with another device, such as a lamp. Computer fails to complete POST or processor failure. ● Remove and reinstall any cards. ● Remove and reinstall the graphics card, if applicable. ● Ensure the power cable is connected to the system board and processor. Computer is in sleep mode. ● Press the power button to bring the computer out of the sleep mode. ● Ensure all power cables are securely connected to the system board. Troubleshooting your computer 71