Resetting a Dell power supply refers to power cycling or restarting the power supply unit (PSU) on a Dell desktop computer. This may be necessary if the computer is experiencing power issues such as not turning on, not powering up fully, or randomly shutting down. Resetting the PSU can help troubleshoot and resolve these types of problems.
The PSU converts the AC electricity from the wall outlet into the low voltage DC power required by the computer’s internal components. Like any electronic device, the PSU can sometimes experience glitches or connection problems that prevent it from delivering stable power to the system. Resetting the PSU clears these errors and restores normal power delivery. It’s an easy first step to try before investigating hardware issues or replacing components.
There are a few different methods for resetting a Dell PSU, from soft resets involving pressing the power button, to hard resets which disconnect the PSU cable itself. The goal of resetting is to power cycle and reconnect the PSU in order to identify and resolve any underlying power problems with the desktop computer.
Preparation
Before resetting your Dell power supply, it’s recommended to back up any important data and close any open programs or files to prevent potential data loss. You can back up data to an external hard drive, USB drive, or cloud storage. Save and close any open documents, browsers, or software applications.
You should also make note of any customized BIOS settings you may have changed. Resetting the power may revert the BIOS to default settings and erase any customizations.
Locate Power Button
On most Dell laptop models, the power button is located above the keyboard near the hinge of the screen. However, some models integrate the power button into the keyboard itself. For example, on the Dell XPS 13 9350, the power button is the top right key of the keyboard with no marking on it (1). On Dell Inspiron models like the 3000 and 5000 series, the power button can often be found on the right side of the keyboard near the Delete key (2). For desktop models, the power button is typically located on the front of the chassis, either on the top or side. Some high-end gaming desktops like the Alienware Aurora place the power button on the top of the case. It’s important to visually inspect your specific Dell model to identify the power button before attempting to power on the device.
(1) https://www.dell.com/community/en/conversations/inspiron/dells-new-power-button-integrated-into-the-chicklet-keyboard-compromising-on-efficiency-for-looks/647f8b13f4ccf8a8deb1a12a
(2) https://www.lifewire.com/turn-on-dell-laptop-5118072
Perform Soft Reset
A soft reset is a simple method to restart your Dell computer when it is unresponsive or frozen. Before attempting a hard reset, which can result in data loss, try a soft reset first. To perform a soft reset on a Dell computer:
1. Save your work and close any open programs. This helps prevent data loss.
2. Press and hold the power button for 5-10 seconds until the computer shuts down.
3. Wait a few seconds, then power the computer back on with the power button.
A soft reset essentially cuts power to the computer briefly before restarting it. It’s a simple way to reboot the operating system without fully powering down the computer. Try a soft reset if your Dell is experiencing minor freezing or glitching issues. It can often resolve basic software problems without more invasive solutions. However, if the issues persist after a soft reset, you may need to attempt a hard reset for a deeper reset.
Perform Hard Reset
A hard reset should be performed when a soft reset does not resolve the power issue. A hard reset completely cuts power to the computer and drains any residual charge, which can often fix power problems (How to Perform a Hard Reset on a Dell Computer).
To perform a hard reset on a Dell desktop:
- Press and hold the power button for 15-20 seconds to completely drain the computer and cut power.
- After holding the power button, disconnect the power cable from the back of the computer to ensure no power is going to the system.
- Let the computer sit for 2-3 minutes to drain any residual power.
- Reconnect the power cable and press the power button again to turn on the computer.
A hard reset is recommended when power issues persist after a soft reset. It clears all power from the system, allowing it to restart fresh. This should only be done when troubleshooting steps like a soft reset or BIOS reset have not resolved the no power issue.
Reset BIOS
If resetting the power supply does not resolve the issue, you may need to reset the BIOS (Basic Input/Output System) settings next. Resetting the BIOS will restore the original factory settings and clear any customized configurations, which can help resolve hardware issues.
To reset the BIOS on a Dell computer or tablet:1
- Restart the computer.
- Press the F2 key on the keyboard several times until the computer enters the BIOS setup.
- Navigate to the Main menu and select Restore Defaults. This will reset the BIOS settings to factory defaults.
- Select Save & Exit to save changes and reboot the computer.
Resetting the BIOS will remove any customized settings, so you may need to reconfigure some preferences after the reset. But it often resolves hardware issues caused by incorrect or corrupted BIOS settings.
If resetting the BIOS does not resolve the power supply issue, there may be a deeper problem requiring advanced troubleshooting or Dell support assistance.
Troubleshooting
If your Dell desktop still does not power on after resetting the power supply, there are a few troubleshooting steps you can try:
Check that all cables are securely connected to the power supply, motherboard, and components like the hard drive. Reseat connectors by unplugging and plugging back in.
Try using a different power cable if you have one available. The original cable may have become damaged.
Make sure the wall outlet is functioning by testing it with another device like a lamp. Also try plugging the computer into another outlet in case the original one went bad.
Verify that any connected devices like printers, scanners, or monitors are not causing an overload on the power supply. Disconnect extra devices and see if the computer powers on by itself.
If the above steps do not resolve the issue, the power supply itself may need to be replaced. Instructions for replacing a Dell desktop power supply can be found on the Dell Support website.
As a last resort, contact Dell technical support who can walk through diagnostics and may send a replacement power supply if needed.
Preventing Future Issues
Here are some tips to help prevent future issues with your Dell power supply and maintain optimal performance:
- Regularly inspect the power cable for any frays, cracks, or damage. Replace immediately if any wear is found. See How to Troubleshoot AC Adapter Issues on a Dell Laptop for more details.
- Keep the power supply and cable free of dust and debris. Gently wipe down with a dry microfiber cloth periodically. See General Maintenance Guidelines for tips.
- Do not twist, sharply bend, or pinch the power cable. Route and store the cable properly to avoid damage.
- When traveling, use caution and adequately protect the power supply to avoid impacts or compression damage. Consider a protective case.
- Avoid exposing the power supply to extreme heat or cold. Do not leave in vehicles long-term.
- Only use the OEM power adapter designed for your specific Dell model. Avoid cheap, generic replacements that may not provide steady and safe power delivery.
- Unplug the power cable by grasping the plug, not the cord, to avoid damage over time.
- Allow adequate airflow and do not block the power supply vents during operation or charging.
Taking steps to properly maintain and handle your Dell power adapter will help maximize its safety, efficiency and lifetime.
When to Contact Support
While many common power issues with Dell computers can be fixed by resetting the power supply or performing troubleshooting steps at home, there are some situations where you will need to contact Dell support:
If the power supply is making unusual noises like buzzing or high-pitched whining, this could indicate an electrical issue that requires professional diagnosis and repair. Do not continue using the power supply, as it may be hazardous.
If you have determined through testing that the power supply itself is defective and needs to be replaced, contact Dell support to initiate a warranty claim or purchase a replacement PSU.
If the power supply light is blinking in a specific pattern, this indicates an error code that will require analysis by Dell support to resolve. Do not attempt resets on your own, as this could make the issue worse.
If you have tried all troubleshooting steps and resets but the computer still does not power on, there may be an internal component failure that requires professional service and repair. Contact Dell support to arrange for technical assistance.
Any time sparks, smoke, burning smells, or other dangerous issues occur when the computer is plugged in, unplug it immediately and get in touch with Dell support right away. Do not attempt to use the computer until it can be properly examined.
Conclusion
Resetting your Dell power supply can help restore your computer to normal functioning when encountering issues like freezing, crashing, startup failure, and other power-related problems. The steps we outlined for performing a soft reset by pressing the power button, a hard reset by disconnecting and reconnecting the CMOS battery, and resetting the BIOS settings can get your Dell device up and running again.
Resetting the power gives your device a fresh start, clearing any corrupt software issues. It’s a quick and easy fix you can attempt before exploring more complicated repairs. Knowing how to reset the power supply enables you to troubleshoot problems yourself, saving time and frustration. With the simple guidance provided here, you can feel confident addressing Dell power problems and get your computer operational once more.