You may encounter some problems when using your laptop. For example, pressing the power on button does not display anything. Many users have encountered such a problem: why won't my computer turn on? This article gives you the troubleshooting about the computer not powering on.
Part1: The laptop can't be turned on, you can judge whether it is powered on
If the laptop display or light is no on,determine if it is a problem with the power adapter, try plugging in again or replacing the original battery and adapter to test.
If laptop not turning on but power supply ok, it may be caused by poor contact of various components of the computer. In this case, you need to disassemble and check the components whether there is looseness. Re-plugging the laptop parts that may affect the self-test.Generally, priority is the failure of the RAM and laptop fan.
Finally, before the laptop is turned on, if the computer is plugged in some external devices, such as USB devices or projection devices, unplugged these devices and then turned on your computer.
Part2: Static electricity in the components causes the laptop won't power on
even when plugged in
Static electricity is the weak current that remains on the electronic components after the power is turned off.
In other words, after turning off the computer, even if the battery and power are removed, the computer still has a weak current.
It's enough to keep your computer running for a few seconds or let the fan spin. Static electricity may cause the laptop won't turn on no lights, no display, or even cause a short circuit on the motherboard.
Reset the laptop hardware.
2.1 Shut down the computer.
2.2 Remove the laptop battery and power adapter.
2.3 Pressing and holding the power button for 10 seconds.
2.4 Then reinsert the battery (or power adapter).
2.5 If your laptop's battery is sealed inside the computer case, the battery can't be easily removed. There should bea small hole in the back of the laptop called the "reset hole". You need to use a pin to insert and press this hole to complete the hardware reset.
2.6 Reconnect the power and start to test.
Part3: Check or replace the CMOS battery
Check or replace the CMOS battery,especially if your computer has been in use for a long time. A bad CMOS battery is a common cause of the laptop no power no lights.
Part4: The laptop won't boot up and black screen, it may be due to hardware incompatibility
The notebook will start with a "beep" sound, which is the BIOS self-test sound, and then the startup screen will appear. If there is a problem with the laptop, the BIOS will generate a related voice to prompt during the self-test.We can judge which hardware has a problem based on the alarm sound or the error code on screen.
Part5:Replace the motherboard of your laptop
If you have determined that the power button, power adapter, and power supply are ok and the various parts of the notebook are also tested for well.
However, the laptop does not respond when it is turned on, and a component on the motherboard may not work properly. You should consider replacing your motherboard, but this part of the inspection should be done by a professional maintenance person.
Summary:
The above is about how to fix a computer that won't turn on suitable for ASUS/HP/DELL/MacBook. When you have a problem, you can check the related laptop parts that may because the problem. If you can repair your broken laptop parts by yourself, you can save a lot of laptop repair costs.
Related Articles:
How to Fix Laptop Beep Codes Error Startup
How to Fix Laptop Turns on But Screen is Black
How to Fix HP Laptop Battery Drains When Off
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