Sometimes, when I copy and paste a piece of text, the Chinese characters in the text would become question marks (I believe they are not garbled, but actual question marks).
I believe this has nothing to do with font or encoding or whatever, since it can happen when I copy & paste within the same application, for example notepad, word etc.
I recorded a video to show this problem, this is so weird that I'm starting to think it's hardware related. but again is it even possible that hardware can cause such issue?
Please click HERE for the video. Any hint/help would be greatly appreciated. The video is only 30 seconds long, I appreciate your patience.

  • You should copy to Notepad++ or a text editor that handles Unicode characters, etc. better and compare the results too when this occurs. I find Notepad++ very helpful when troubleshooting such issues... not exactly the same issue but sort of. – Pimp Juice IT Feb 24 '17 at 6:39
  • @Walmart thanks for the suggestion. But I was using the same steps for the 3 tests I did, I don't think it's related to unicode handling as the 3rd test was ok. Also this problem can happen in any program, IE, Word etc. – David Dai Feb 24 '17 at 6:41
  • @Walmart I just tried with Notepad++, encountered this problem on the very 1st try. :( – David Dai Feb 24 '17 at 6:43
  • Are you copying the characters from various locations too or does the source of these change or always stay the same? Typically this issue is related to the application not reading the characters correctly or just a bug with the app that it's copied too/from... I've seen this with web apps before such as well know products like QNXT to custom apps... In Notepad++ go up to encoding with the questions marks or unexpected characters pasted and change to UTF-8, ANSI, etc. and you may find that toggling to one will show the expected characters. – Pimp Juice IT Feb 24 '17 at 6:46
  • @Walmart I was working on a Word document. I was doing copy and paste within the same document, and this happened dozens of times. And what I just did with notepad++ was, I opened 2 new tabs, typed in some Chinese characters in one and tried to copy them to the other tab, and it happened. – David Dai Feb 24 '17 at 6:51

2 things can alter the behavior: the font and the encoding. If you save in a compatible encoding, all you have to do is make sure that in Format-->Fonts you have a compatible font selected.

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