July 23, 2024

Having trouble getting your computer to turn on? Here are some troubleshooting steps to help you fix the issue.

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Verify Power Supply and Cable Connections

Check the power supply unit to ensure it is properly connected to the motherboard and other components. Make sure the Molex connectors and SATA cables are securely plugged in.

Inspect the power cable for any damage or loose connections. If needed, try using a different power cable to see if that resolves the issue.

Ensure that the power switch on the back of the power supply unit is turned on. Sometimes it can accidentally get switched off without realizing it.

If the computer still won’t turn on, try plugging the power cable into a different outlet to rule out any issues with the wall socket.

If there are any signs of a short circuit, such as burning smells or visible damage to the power supply unit, immediately stop using the computer and seek professional help.

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By verifying the power supply and cable connections, you can troubleshoot and potentially fix the issue of your computer not turning on.

Inspect Internal Wiring and Power Button Functionality

Inspect the internal wiring of your computer to ensure there are no loose connections or damage. Make sure all cables are securely plugged in to their respective ports on the motherboard and power supply unit.

Check the functionality of the power button on your computer. Make sure it is not stuck or faulty, as this can prevent the computer from turning on.

If you suspect a problem with the power button, you may need to replace it or have it repaired by a professional technician. Additionally, check for any visible signs of damage or wear on the button itself.

Test the power supply unit to ensure it is functioning properly. Use a multimeter to check the voltage output of the PSU and make sure it is within the acceptable range.

If the power supply unit is not providing enough power to the motherboard, this can prevent the computer from turning on. Consider replacing the PSU if necessary to resolve the issue.

By inspecting the internal wiring and power button functionality of your computer, you can troubleshoot and fix the issue of it not turning on.

Disconnect Non-Essential Devices and Check Display

  • Unplug all external devices such as printers, USB drives, and external monitors from the computer.
  • Remove any CDs or DVDs from the optical drive.
  • Check the power cable and make sure it is securely connected to both the computer and the power outlet.
  • Press the power button to turn on the computer and check if the display is working.
  • If the display is still not working, try connecting the computer to a different monitor or TV to see if the issue is with the display or the computer itself.
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Advanced BIOS Settings and Troubleshooting Guide

Setting Description
Boot Order Determines the order in which the computer looks for bootable devices
UEFI/Legacy Mode Choose between UEFI or Legacy BIOS for boot mode
Fast Startup Enables or disables fast startup to decrease boot time
Secure Boot Securely boot from trusted hardware and software

Use the BIOS settings to troubleshoot issues with your computer not turning on. Make sure the boot order is correct, try switching between UEFI and Legacy mode, disable fast startup, and check the Secure Boot settings.


Why won’t my PC turn on but has power?

My PC won’t turn on even though it has power because there may be an issue with the power button on the case or the wires connecting it to the motherboard. Check for an onboard power button on the motherboard as well.

When I press the power button on my PC nothing happens?

When the power button on your PC does not respond, there can be a variety of reasons for this issue. Some common causes include a disconnected power cable, a dirty power button, power source problems, or a faulty PSU.

How do you reset your PC when it wont turn on?

To reset your PC when it won’t turn on, try pressing the power button and then repeatedly hitting either the f11 or Shift key to access the advanced settings for a factory reset. Resetting your PC with the power button is possible in this situation.

How do I make my computer start?

To make your computer start, press the Power button on the computer. If the monitor is off, press the Power button on the monitor as well. Once the computer finishes booting up, enter your username and password when prompted.

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