Problem

The desktop PC is completely unresponsive when the power button is pressed. There are no signs of power activity (e.g., no indicator lights, no fan noise), suggesting a total loss of electrical supply to the unit.

Solution

The issue was resolved by identifying and securing a loose connection between the main power cable and the computer chassis.

Action Steps to Reseat the Power Cable:

1. Unplug: Disconnect the power cable from the wall outlet or surge protector.
2. Inspect and Reseat: Locate the power inlet on the back of the computer chassis (where the cable plugs in).
3. Firmly Secure: Push the power cable connector into the computer chassis inlet. Ensure the connector is fully seated and there is no gap.
4. Restore Power: Reconnect the power cable to the wall outlet/surge protector.
5. Test: Attempt to power on the desktop unit.

Prevention

To ensure reliable operation and prevent unexpected power loss:

• Initial Setup: When setting up the computer, always push the power cable plug completely flush with the computer chassis.
• Cable Management: Avoid routing the power cable where it could be snagged, pulled, or stressed, which can loosen the connection over time.
• Verification: If moving or adjusting the computer unit, verify that the main power cable connection remains tight before attempting to power on.