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Is it possible to upgrade my GT310M by soldering another GPU in my Sony's motherboard?

Sorry if this is a newbie question, but I couldn't find anything concrete around the web. I have a Sony Vaio VPCF121FX and it has a motherboard soldered GPU (GT310M). I want to know if it's possible ...
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Acer Laptop does not power up after repairing DC power jack

I have an Acer travelmate laptop which (by mistake) I dropped on the floor with the power jack side down, with the charger connected and it broke the DC jack from the inside of the laptop. Then I ...