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(SOLVED) Why is My PC Not Turning On?

Why Is My PC Not Turning On?

The main reason why your PC is not turning on is because of a faulty power cable, a faulty powe supply or defective third-party hardware.


Possible Causes

  • Faulty Wires
  • Third-Party Hardware


Faulty Power Cable

Your PC may not turn on if faulty wires are connected to the system. This could mean several wires, but the power cable is the first one you should check.

If there is no power supply going through your cable to your PC, it will not be able to turn on. Look closely at all the wires connected to your PC for any signs of distress, tears, exposed wire, etc.


Third-Party Hardware

Sometimes, the installation of third-party hardware can interfere with the functionality of a PC. This may be the problem if you have recently added or installed third-party hardware and your PC stopped working.

Some hardware may carry too heavy of a load for your PC to function, and some may be incompatible with the make and model of your PC, thereby affecting its power.


How To Fix A PC That’s Not Turning On

To fix a PC that’s not turning on, you can try to replace the power cables and uninstall third-party hardware.


Replace the Power Cable

The first step should be to ensure that all the cables on your PC are functional and supplying power to your PC; you can use the following steps to determine this.

  • Check that the PC power cord is securely connected to the power source and outlet, as it might become loose over time
  • Replace the cable that supplies electricity to your computer to ensure it is not faulty or damaged
  • If you don’t have another power cord to test with, ask if you can borrow one from a friend or family member. The same cable may power some computer displays as your computer
  • As a test, if your monitor power cord is detachable and has the same sort of connector as the computer, try using it to power the computer
  • Many monitors share the same cable as a desktop power supply. Whether that’s the case, try swapping out the monitor cable for the PC cable and seeing if your display turns on
  • If it doesn’t, replace the PC that was powering the monitor. If you don’t have any spare C13 cables, get some
  • Remember that certain very power-hungry PC installations require a larger gauge wire, so make sure to replace the cable you were using with one of a similar size.


Uninstall Third Party Hardware

Eliminating as many variables as possible is a fundamental concept of troubleshooting. Detach everything from your computer that isn’t necessary.

  • If you have recently installed computer gear, we recommend you briefly disconnect or remove it to check that it is not affecting your problem
  • Generally, this entails disconnecting the printer cord, scanner, camera, and anything else attached to the computer
  • Attempt to boot the computer with only the power cord, display, mouse, and keyboard


PC is not turning on


Why PC Not Turning On No Power Light

The reason your PC is not turning on with no power light is because there is no power supply.

  • It is possible that the outlet you have plugged your PC into may be faulty and not working, therefore making it impossible for your PC to turn on without a sufficient power supply
  • As a cautionary feature, some PCs do not turn on when there is a risk of high voltage surges incompatible with the power supply needed for the PC to turn on
  • On the other hand, your PC may also not turn on if there is low voltage that isn’t supplying enough power to the PC to be able to function


There are a few possibilities if you try to switch on your computer and nothing occurs. Most likely, there is no power entering your computer.

  1. Unplug your PC and connect it to a wall socket directly.
  2. If nothing happens, check that the outlet is operational by plugging in something else, such as a desk light, and checking that it turns on.
  3. Check that any surge protectors or power strips are properly hooked into the socket and that the power switch is turned on.
  4. Check that your PC’s power supply on/off switch is turned on.


PC Power Light Is On But Won’t Start

If your PC power light is on but won’t start, it is because your PC may have a faulty battery that needs to be charged or replaced.

If the computer that won’t start is a laptop and you just ran out of battery power, it’s not uncommon for it to fail to start even if it’s now hooked into a wall outlet.

  1. Plug in the laptop.
  2. Charge the battery for a minimum of 30mins.
  3. Now turn the power back on.
  4. If it still fails to turn on, you may need to swap out the batteries.


Computer Not Turning On but Motherboard Has Power

If your computer is not turning on, but the motherboard has power, it is because of a faulty power button.


To fix this:

  • Examine your motherboard for an inbuilt power button
  • Not all of them do; if you’re unsure or can’t find it, examine your motherboard handbook
  • This will activate your PC in the same manner that an appropriate connected power button would


Why Is My Pc Not Turning On After Unplugging It

The reason your PC may not be turning on after being unplugged is because it doesn’t have the power supply that it needs to turn on.


Before beginning a time-consuming troubleshooting process, ensure that you’ve turned on every power switch and power button on your computer system:

  • The power button/switch is often found on the front of a desktop computer’s chassis or the top or side of a laptop or tablet
  • On a desktop computer, the button or switch is normally located on the back of the computer.
  • Flip the switch or press the button to turn on


PC Not Turning On No Power Light Is Flashing

If your PC is not turning on and there is no power light flashing, you may need to replace the CMOS battery.


  • If your computer is over a few years old, has frequently been left off, or has had the primary battery removed, you should replace the CMOS
  • Unbelievably frequently, a computer that appears to be without power may be traced back to a defective CMOS battery
  • You can get a new CMOS battery for less than $10 almost anywhere that sells batteries


PC Power Button Blinking Orange Light

If your PC power is blinking orange light, it is because there is an internal power issue preventing its function.


  • The computer is getting electricity; however, there might be an internal power issue
  • Ascertain that the processor power line is firmly attached to the system board
  • You will have to inspect the internal power supplies of your PC to diagnose and correct the issue
  • You can use your PC’s reference guide as the specifics would vary from PC to PC

Why PC Power Button Blinking Red Light

The reason why your PC power button is blinking red light is because it is either indicating a power system failure or is overheating.


  • While what a blinking red light may indicate may vary from PC to PC, it typically means that there has been an internal failure in the power system of your PC, rendering it unable to function
  • On other PCs, it may mean your PC is overheating and needs to cool down. Unplug the PC from all power supplies and keep it in the dark, cool, and ventilated space to let it cool down


Why PC Power Button Blinking Green Light

The reason your PC power button is blinking green light is because it is either in sleep mode or on standby.


While what a blinking green light may indicate may vary from PC to PC, it typically means that the hard drive is powered on and functional, but the PC is on standby.

To take your PC off standby or sleep mode, you need to press the power button once, and the green light will stop blinking, and your PC will turn on.


Why Is My Pc Not Turning On and Beeping

The reason your PC is not turning on and beeping is because it is experiencing a system malfunction that is preventing it from turning on.


  • A computer that won’t start and generates beeping sounds has a serious issue that prevents the system from booting up
  • When a computer is turned on, one of the first things it does is execute a Power On Self Test, in which the system runs a hardware diagnostic test to ensure everything is operating properly


Why Did My PC Shut Off Mid Game and Won’t Turn On?

The reason your PC is shutting off mid-game and won’t turn on is because it needs to be removed from the docking station.


  • When you dock your laptop to any appropriate docking station, it frequently causes a technical problem that causes your laptop to switch off abruptly
  • If you have docked any hardware plug-ins to your laptop’s E-port, you should remove them to see if it boots up


Why Is My Lenovo PC Not Turning On?

The reason your Lenovo PC is not turning on is because it may require a power drain which is preventing it from operating.


To fix this:

  • Disconnect any external gadgets and unplug the electricity
  • If the battery is detachable, take it out
  • Use the pinhole reset on laptops that have an internal battery
  • There may be an emergency pinhole reset button on the bottom lid of laptops with internal batteries
  • Reset your PC by pushing a pin into the reset hole
  • You may use the Novo button found on the Lenovo Ideapad to enter the BIOS or recovery mode
  • Press and hold the power button on PCs without a pinhole reset or Novo button for a minimum of 10 seconds
  • If the reset is successful, the power button could malfunction. Call the helpline
  • Reconnect the power cords after the power drain and turn on the computer


Why is my HP PC not turning on?

The reason why your HP PC may not be turning on is because of a fault in its hardware.Your boot problems might result from freshly installed hardware, such as a new RAM kit.


Unfortunately, there are occasions when the hardware in your PC breaks down.

In such a case:

  • Removing and installing your new hardware will allow you to reboot
  • Your hard disk has failed if you hear clicking noises or notice the drive spinning up before shutting off
  • This usually indicates that you’ll need to swap out your hard disk


Why is my DELL PC not turning on?

The reason your DELL PC may not turn on is because of an internal malfunction requiring a hard reset. A hard reset removes any residual power that could be the cause while also fixing several issues.


To fix this:

  • Restart the computer
  • Disc disconnect the computer’s power supply or AC adapter for Dell laptops with detachable batteries before removing the battery
  • Remove all cables from your printers, cameras, media cards, and USB drives
  • To drain any remaining power, press and hold the power button for 15 to 20 seconds
  • Connect the battery, AC adapter, or power cord for Dell computers
  • If your Dell computer can power on, use the proper troubleshooting instructions to pinpoint and fix the issue

Ernie Lo

Ernie Lo is a qualified web designer and web developer. He works as an IT support technician and website manager at Benleigh Vending, and he also fixes vending machines.

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