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ASUS TUF Gaming Laptop - FX505D-DBQ234T with i5-8750H and Nvidia gforce GTX. MFD-2019-05.

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No power coming on with power button

I bought my laptop 2.5 years ago. A service service serviced my laptop 1 year ago. Since the warranty of my laptop expired after 2 years, I wanted to service my laptop myself. I opened the case of my laptop. After removing the battery, removing the fans, I gently cleaned it with air and a brush. And then when the thermal paste dried. I applied thermal paste for it (I applied a little bit of thermal paste). And I put the laptop's case back. And when I pressed the power button to start it, I realized that it was not working. I tried all the solutions on the internet, but it did not work. On the first day, when I inserted the battery, I heard a crackling sound from the motherboard, but after a few days, this sound stopped. I really need a laptop and please help.

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That crackling sound likely means something has been burnt out or shorted out. However, to check if this is the case, open up your laptop and try to turn it on without the battery plugged in, with it connected to the charger. If it works, you need a new battery, and the crackling sound is from a bad or swelling battery.

Are there any visual signs of burns on the motherboard? Is the battery swelling? (IF THE BATTERY IS SWELLING UNPLUG IT IMMEDIATELY AND TAKE THE BATTERY OUT OF THE LAPTOP. TAKE IT TO HOME DEPOT. THEY HAVE A PLACE TO DISPOSE DYING OR DANGEROUS BATTERIES. BE VERY CAREFUL WHILE HANDLING THE BATTERY, AS IF IT SWELLS TOO MUCH OR IS PUNCTURED OR DAMAGED, IT MAY CATCH FIRE AND/OR EXPLODE.)

Did anything happen to it while you were taking it apart for service? Did you drop a part or scratch anything?

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I uploaded 2 new photos. Maybe something got burned as you said. But I don't understand. Before I did the maintenance of the computer, my computer was working very well, there was only a heating problem. Even though I removed the battery of the computer, it did not work when I plugged it in.

I don't see any new photos.

If your computer is not working while plugged in without the battery, then the issue is with one of the other components. Can you hear the hard drive or fan spinning when you try and turn it on?

When I try to turn on my computer, I don't hear any sound.

Alright, then you can try and look on the motherboard for any burnt out parts. If it is a large part that can easily be soldered back on, then you can look it up. If it is an obscure logic problem, then give up and my a new motherboard, because you likely will never find a small error in the sea of chips and resistors on the incredibly complicated circuit board.

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