If ever you have a laptop that will not come on, do not assume the motherboard is bad. It may be something connected to the motherboard that is bad. I have had many HP laptops with this problem. But it is possible that it affects other models too.
This problem happened after I just replaced the broken screen, which at my cost was $180. (It is a beautiful screen.) A few weeks later, this HP laptop no longer powered on. The LED light by the power connector – which is integrated into the power connector – never came on. Since this light only comes on when the motherboard works, I naturally assumed the laptop motherboard was defective. The person was using a cheap generic Chinese power adapter and I thought it could have damaged the motherboard.
But, I was wrong. Here is how I eventually figured this out.
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