Whenever I double-click on any drive in My Computer, I get following error message

Problem:
Cannot find copy.exe. Make sure you have typed the name correctly and then try again.

Solution:
Enable “Show hidden files” option in “Tools -> Folder Options” and then search for “Autorun.inf” file in all drivers and if you get them in root of any drive (e.g. in C:\, D:\ and so on), delete them.