How to Troubleshoot a No Power Issue on your CyberPower Desktop Computer

The following article contains information and CyberPower knowledge base article links to assist with troubleshooting a No Power situation on your CyberPower desktop.

No Power - Introduction

No Power, in this case, can be defined as either the system not receiving any power from the power source or the power not being distributed in the system correctly. It may be more complicated to determine what is causing the No Power issue, but it is easy to identify. You may notice the following symptoms if you are experiencing a No Power issue:

• No response from the power button (LED stays off)

• No lights on inside the case on the motherboard or anywhere else inside the case.

No Power - Troubleshooting

Note: These quick tips are intended to provide a direct path to common points of failure to quickly identify solutions. These tips are not meant to replace complete troubleshooting but provide simplified steps. If these steps do not yield a point of failure, or do not apply to the symptoms being experienced, please refer to the links provided in this article. These steps are equally valid for both Desktop and All in One system.

Before you begin a full investigation into the issue, turn off the power and check any of the following steps that are appropriate to your system, before attempting to restart your PC:

1. Check that all cables are secure in their connection (power and data cables) by re-plugging them, both externally and inside your system

2. Ensure the wall outlet is working by trying another device on it first

3. Bypass any battery back-up or power strip and connect the power cable directly to the wall outlet

4. If there were any hardware or software changes just prior to the issue, reverse those changes and test again

5. Remove any non-essential items connected to the system (printers, flash drives, external hard drives, etc.)

6. Ensure that all removable media is removed from both the system and any printer left attached to the system (disks, cell phones, SD cards)

7. Rule out an Issue with the PSU:

   1. If you have an older system, please check the Voltage selector switch on the PSU hasn't changed to the wrong Voltage 240v, 

   2. Reseat the power cord which is connected to the Power Supply of the system and power the Desktop on. (rules out a bad physical connection)
   3. Try a different wall outlet, and power it on. (rules out the Wall Socket/Power in)

   4. Try a known good substitute and a known good AC adapter cable. If the fault is with the adapter please confirm the status of the adapter cable on the known good device.

   5. If your monitor is powering on and the power cable is appropriate to your PC, then swap the cable between your monitor and PC to rule out an issue with the cable or power socket.

8. Ensure that there is adequate space between the back of your PC's exhaust and the area surrounding it. If you computer is too close to the wall or in a tight enclosed area, there may not be enough airflow to allow the heat accumulating to escape causing the PSU, GPU and other components to over heat and shut down or remain off until the component has cooled down significantly. Over heating due to lack of airflow can permanently damage your PC components. It is recommended that there is a minimum of 6" around all sides of the computer to allow hot air being pushed out of the system to have a place to escape away from the computer.

1. If the PSU checks out OK or you are unable to troubleshoot it, then move on to troubleshooting the internal components of the PC:

   1. Unplug the Power Cord

   2. Disconnect the cables from an internal component (i.e. the Optical drive, the Storage drives, the memory, etc.)

   3. connect the power cord after disconnecting each component and test if the system powers on. (If it does you've identified the component/connection stopping the PSU from powering on. If it doesn't move on to the next component.)

Once you've completed these checks, It should give you a good idea if the fault is external to your PC, an issue with your PSU or is an issue internal to the PC itself. If the issue continues or is intermittent, please see the section below for links to more articles that will assist with troubleshooting further. If you have identified the faulty part then please contact us with your troubleshooting so we can resolve the issue or if out of warranty we can advise how much it would cost to resolve.