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They can remove the hard drives from there and sell you the rest of the computer with no problems at all. That's what the Goodwill here does now.
It's actually a rosin core solder that's used. Acid core will cause corrosion of the material being soldered which is not good. Acid core solder is a project such as Plumbing not for electronics. It can also damage electronic components other than the wire beats other day.
I think your comments were very helpful and I have the same understanding is you with me use of acid core solder and electronics. I also have background and electronics and am ham radio operator and home brewer. Please don't hesitate to comment in the future because people can learn from your knowledge.
Living in your Truck