My Apple 6 used to show a copy, but it has somehow become a copy these days, and sometimes it can't be posted. What happened?

What I found after copying and pasting was the previous content. Possible questions are:

1, it may be an operation problem, and the copy was unsuccessful.

2. The text codes used are different, or the editors are incompatible, especially when editing the original text in a full-width state, which is easy to happen after pasting.

3. The memory stick is broken, and there is something wrong with the memory quality.

4. Two different brands of memory with different capacities are mixed together, which is easy to be incompatible.

5. Pay attention to heat dissipation, especially after overclocking.

Solution: Before copying and pasting, you can copy and paste to the clipboard or notepad for modification and adjustment; You can also use the software MemTest to check the memory, which can thoroughly check the stability of the memory. There is a place in memory for storing data, which is called a buffer. If the program puts the data in one place, it will overflow because of insufficient space.