Good evening. I have some .exe files in my external hard drive and yesterday I connected it to a PC with Windows 8.1 and I noticed that each .exe file got hidden. I had to uncheck the OS hide files option to see them again. Now, the name of each file has a "g" letter in the beginning of the file's name. So my question is: why happened that and how can I fix it? Thanks for reading my problem. Every answer will be really appreciate.