Q:

running exe makes system unresponsive

I run the file using the command prompt and it got stuck and we had to reboot the server. 
After  the server started I put the exe into another folder and when I run this time it run sucessfully but it still hung when we run it from the original folder. 
All this suggested that there may either be a problem with the disk or that some other process was interfering. I also noted that when opening the original folder from the windows explorer, the progress bar that shows the folder loading (in the address bar) never completes to show the folder is loaded completely.
The chkdsk /r doesnt show any errors.
Please analyze the causes.

A:

Actually, running a virus scan fixed the problem.

