Monday, February 16, 2009

Laptop Can’t be Turned On

Few days ago, I found that my laptop is dead, I couldn’t switch it on. The power indicator (LED) is green, means the power is connected. But when I press the On/Off button, seemed it only responded 1-2 seconds then stop, nothing happen again.

What should we do to make it works again?
Well… I’m not the expert, and I’m not a technician. But here, I’m just going to share with you, how I can make my laptop back to work. So when you experience the same problem, I hope you will have the picture to have it on again.
There are 2 things need to be checked:

1. The adaptor

Check the voltage (I used volt meter / AVO meter). The gauge should indicate the voltage exactly the same as the figure mentioned in the adaptor.
In the adaptor case i read that the output is 19Volt, exactly the same as the volt meter tells me. So the voltage is OK.
Second thing need to be check is the Current. Because if the adaptor voltage is OK, but it cannot supply enough current, then it cannot make the laptop on.
Unfortunately, measuring current is not that easy. You need to put a load on and use the induction gauge. In my case, I skipped this. All I had to do is use this adaptor to another laptop with the same brand and type. If it works, then there is nothing wrong with the adaptor. And yes, I’d tested the adaptor to other laptop and it’s OK. SO I jumped to step no.2

2. The Laptop itself

If the power indicator LED is on, then it means that the laptop gets the power from adaptor (if it is off then you must check the laptop power supply!).
So.. the adaptor is OK, laptop receives power supplied by the adaptor. Why it’s still not on?
There must be a short circuit that makes an over load. We have to check the device which consumes lot of power, such as: CD/DVD drive, hard disk and fans.
How to disassemble laptop and take off CD/DVD drive and hard disk? Let’s jump to my next article, Disassembling Laptop for troubleshooting.

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