Why does my PC not turn on at all?

If your computer isn’t turning on at all—no fans are running, no lights are blinking, and nothing appears on screen—you probably have a power issue. Unplug your computer and plug it directly into a wall outlet you know is working, rather than a power strip or battery backup that may be failing.

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

If you’re still getting absolutely nothing when you press the power button, look to see if your motherboard has any idle indicator lights to confirm that the motherboard is definitely receiving power. If not, then you might need a new power supply.

What causes a motherboard to not power on?

One major why your motherboard won’t turn on is because of improperly installed components. Visually check your hardware and peripherals to ensure that every device is evenly seated on your motherboard. An improperly seated component can cause the boot process to fail.

How do I test a PC power supply?

To test your PSU:

  1. Shut off your PSU.
  2. Unplug all cables from the PSU except for the main AC cable and the 24-pin cable.
  3. Locate pin 4 and pin 5 on your 24-pin cable.
  4. Bend your paper clip so the ends can be inserted into pin 4 and pin 5.
  5. Turn on the PSU.
  6. See if the PSU fan turns.

How do you know if your PC power supply is bad?

The most obvious sign of a faulty power supply is when your computer won’t even turn on. Even if everything else on your computer is broken, if your power supply is operational its fan should turn and you’ll still see a power LED light up near the power supply or on the front of the case.

How do I know if my motherboard is broken?

Signs and Symptoms of Faulty Motherboard

  1. 1 Failing to boot.
  2. 2 Blue Screen of Death.
  3. 3 Freeze or Glitches the computer.
  4. 4 CPU Restart Abnormally.
  5. 5 Hardware is not recognized.
  6. 6 Slow down performance.
  7. 7 Not enough power and data speed to the component.
  8. 8 PC overheats abnormally.