My laptop is completely dead
Cuase of dead : Soaked in water, dried and allowed to stand for 7 days in a pile of raw rice, but still not worked
Hopefully by leaving it in rice for 7 days it hasn't become damaged beyond repair.
Using rice to fix water damaged electronics is a myth. It doesn't work. Think about it. Rice needs to be in direct contact to absorb moisture so it can't do this through the plastic body of the laptop. Rice is for dinner, not repair
The impurities in the water causes corrosion and provides circuit paths for the electricity which were not in the laptop's operating design and could damage the components. The corrosion starts immediately and is ongoing until it is completely cleaned away
First do not try to charge or to turn on your laptop and then remove the battery as soon as possible from the laptop to minimize any further damage. There is always power somewhere on the motherboard of a laptop, even when it is turned off. The power button is not a power isolating switch. Think of the laptop as being in an extremely low power state when off and not that it is totally disconnected from any power at all.
Then you need to dis-assemble the rest of the laptop and clean all the affected parts using Isopropyl Alcohol 99%+ (available at electronics parts stores) to remove all traces of corrosion and water. If possible do not use "rubbing alcohol" as in some cases this is only 70% IPA or less, can contain additives and is not as effective. If you do have to use it check the label to verify the amount of IPA. The higher the percentage of IPA the better
Here is a link that describes the process. Electronics Water Damage
As always with electronics, especially surface mounted pcb be gentle when handling and especially when brushing away the corrosion. You do not want to remove any components from the board. Remove the shields that may be covering some components as the water may have got in under there. The ends of any flex cables and their connectors need to be cleaned as well
Hopefully after you have done all this the laptop might possibly work correctly again.
Here is the hardware maintenance manual for the laptop that may help.
If this process seems too daunting, take your laptop to a reputable, professional laptop repair service, experienced in liquid damage repair and ask for a quote for a repair. If you decide to do this, do it sooner than later.
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