Follow the troubleshooting steps below. Expand the sections below to learn how to perform each troubleshooting step to identify the cause of the power issue on a Dell desktop or all-in-one.
Most often, restarting the computer resolved many issues. The residual power in the computer may cause the laptop not to power on. Follow the steps below to drain the residual power.
If this did not resolve the issue, proceed to the next step.
The power cord, AC adapter cable, and power cables may get frayed or cut, and wires may become exposed at either end of the cables. This may be due to the way the cable is wrapped around the AC adapter, or if the cable is subject to undue stress. If the damage is severe enough to expose wires, you should discontinue using the power cord or AC adapter. To check the power cord, AC adapter, cables, and the power port on the desktop or all-in-one for any damages:
If you notice a damage, contact Dell Technical Support for repair options. If you do not find any damage, proceed to the next step.
If the power cord and the wall outlet are working correctly and the computer is not able to power on, proceed to the next step.
Reseat the AC adapter by following these steps:
If the AC adapter LED indicator is on, proceed to the next step.
If the AC adapter LED indicator is off or turns off when it is connected to the computer, contact Dell Technical Support for repair options.
It is important to verify that the voltage selector switch on the power supply unit is set to the correct voltage based on your current location. The power supply unit (PSU) of certain Dell desktops allow you to change the voltage from 110V to 220V depending on your current location.
For example, the standard voltage supported in the United States is 110V and 230V to 240V in the United Kingdom. Ensure that the toggle switch on the power supply unit (PSU) is set to either 110V or 220V based on your current location.
If this did not resolve the issue or if there is no voltage selector toggle switch, proceed to the next step.
Dell Inspiron, XPS, OptiPlex, Precision and Vostro desktop systems include a power supply with a built in self-test (BIST) feature that helps diagnose the health of the power supply unit. The LED indicator on the PSU helps identify if the power issue is caused by the power supply unit.
If this did not resolve the issue, contact Dell Technical Support for repair options.
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Article ID: SLN285154Last Date Modified: 10/06/2020 04:08 AM