2. Actually, changing a chip is similar to repairing it. Generally, chips are not so easy to break down, and it is not necessarily guaranteed that they will not be soldered or desoldering after replacing new chips (depending on the service life of the computer).
3. It is a bit expensive to change the motherboard in time. Now many brands of computers are looking for bad manufacturers, and there are often cases of virtual welding of graphics cards or some components. I don't know the specific suggestions. Sticking to one's own interests means repairing the computer, selling it and replacing it with a new one. I don't know when the repaired thing broke down again. If the motherboard is changed to 1000, it is better to sell the computer and buy a new one.
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