Why does my computer power on so immediately turns off?

Updated: 02/01/2021 past Calculator Hope

Power button

If your computer turns off immediately or even within a few seconds subsequently it is turned on, there could be several possible issues. To continue, we recommend going through each section beneath to help discover a solution to your problem.

Caution

Some of the steps below crave you to open the computer case. While working in your machine, always be aware of the dangers of ESD.

Loose cable

Make sure all cables within the computer case are firmly fastened to the motherboard and each component. Check the IDE cables and SATA cables, which are connected to the difficult bulldoze, CD or DVD drive, and floppy drive (if present). Check both ends of each cable and brand certain they are firmly attached to the component and the motherboard. Turn on the computer and examination to see if this resolves the issue.

  • How exercise I open up my computer case?

Tip

Sometimes, the best manner to verify a cable is not loose is to disconnect and reconnect (reseat) the cable on both ends.

Surge protector issues

Surge protectors and battery back-up units can go bad over time, causing reduced ability catamenia to the reckoner. As computers require a specific amount of power to operate, also swell a reduction can force the calculator to shut down.

If this situation applies to your calculator, unplug its power string from the surge protector or battery back-up unit, and plug it directly into a wall outlet. Turn on the computer to see if the problem persists. If the computer stays powered on, the surge protector or battery dorsum-upward unit is bad and needs to be replaced.

Electric short

An electrical short in a computer, which may cause power issues, happens when pieces of metal cause a path for electricity to flow through that shouldn't exist. Computers are full of screws, as they agree nearly every internal component in place, and from time to time, they tin can come loose. Lift your reckoner and gently rotate it while gently shaking information technology from side to side. If you lot hear what sounds similar small rocks banging effectually, you lot likely take loose screws within the case. Open the computer up and remove them.

  • How practise I open my computer case?

Retentiveness upshot

Verify the retentivity modules are properly seated in the retentivity slots on the motherboard. To do this, open the calculator, remove the retention modules from their slots, and gently reseat them. It as well is important to note that retentivity modules are installed in pairs, and sometimes in matching slots, which are designated by matching colors. Make sure the modules are firmly seated and the clamps on both sides of the modules snap into place. Plug in the ability cord and turn the estimator on to run across if the issue is resolved.

  • How exercise I open up my estimator case?
  • How to install calculator retentivity (RAM).

Power supply issues

Ability supply voltage switch

The power supply voltage switch, a modest ruby switch on the back of the power supply, may be on the wrong setting. If this switch'due south setting is non correct for your country, your computer may automatically power downwards. The first thing to practise is to consult the Voltage Valet website to discern your land's correct voltage settings. Then, make sure your power supply voltage switch is set up accordingly.

Possibly defective ability supply

Verify the power supply is functional. A faulty power supply can effect in not enough, if any, ability getting to the motherboard, causing the reckoner to shut off immediately or not plough on at all. Many online computer retailers sell power supply testing units for under $xx. In the issue of a bad power supply, the but remedy is to replace it with a new one. Fixing a power supply is not an economic solution, if possible at all.

Overheating

If your figurer is new or the motherboard was recently replaced, make sure the thermal chemical compound is properly practical to the processor. If the oestrus is non beingness properly transferred from the processor to the heat sink, information technology can overheat very apace. Because of the potential of damage to hardware that overheats, if the reckoner exceeds a gear up temperature, it is automatically turned off.

Motherboard issue

The last matter to check is the motherboard; however, this tin can be rather hard since the event could be anywhere in the circuitry. A faulty, failing, or malfunctioning circuit or component (east.g., capacitor) can cause the figurer to shut off immediately or not turn on at all. If none of the recommendations above assist resolve the issue, we suggest sending the figurer to a repair store or replacing the motherboard.