Win7 Explorer (folder) always open in new window

Today, the computer suddenly has a problem. I installed Clover as a resource manager. Double-clicking on any folder does not respond and cannot be opened.
But right click on the folder, then select Open to open the folder successfully, I don't know what happened.
At first I thought it was a problem with Clover software. Well, I uninstalled the original resource manager directly.
But found a more serious problem, double-clicking on any folder will open from a new window.
Checked a variety of information on the Internet, the folder options in the tool configuration is absolutely correct, but the problem has always existed, restarted several times, still problem.
I want to focus on the system, but it is too hard to force …
also read some online information, saying that it may be a problem with IE browser.
I just saw the Java directory inside the Program Files in my C drive. There is actually an Internet Explorer folder.
This is imaginable … maybe I accidentally dragged this IE folder into the Java installation directory and then it caused a series of problems.
Well, cut this folder directly into Program Files, double click on any folder, OK, the problem is solved.
The problem of tangling for a long time is solved …
If you have similar problems, then check if the IE installation directory of your C drive is still healthy.
If you don't, you can download an IE to install it online. See the information and say that this can also solve the problem.