It should be that your file is saved in the wrong format. For example, the file name of ppt should be saved in the format of' futures'. Ppt', and when you save it, you write' futures', so the icon will become an uncertain icon, not a ppt icon, so you need to choose what software program to punch in when you open it. The specific solutions are as follows:

1, the simplest method:

Add a suffix to the name of each ppt file. For example, the' futures' shown in the above picture is changed to? Futures. ' ppt '。

2. Once and for all:

Open my computer, as shown below:

Then click Tools-Folder Options-Select View-and check Hide extensions for known file types.

So, do you still need to put the suffix of each PPT file name according to the first method? Add. Ppt' (but you can't see the suffix if you add it and press Enter). Ppt' is the format displayed by users). This method can ensure that you don't have to remember what the suffix is when you save the file in the future, and you can quickly display the correct file name and file icon.