Question Power LED goes on but quickly goes off, with a "tumble" sound, and this goes on in cycles, while nothing else happens

andrefrsilva

Honorable
Jun 17, 2015
7
0
10,510
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Toshiba Satellite L850-1V7
Power LED goes on but quickly goes off, with a "tumble" sound, and this goes on in cycles, while nothing else happens.
A video of it: https://drive.google.com/file/d/13dR7WQ_6y-RySQCyqYUWP1oioxTrJcU5/view?usp=sharing

I bought a new motherboard and a new CPU and everything is still the same.
I tried a different power source, but the same happens. The laptop requires 19V. The power sources measure ~20V and 21V.
I tried to disconnect every connector and simply connect the power to the motherboard, and still, the same happens.
 

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