I have some strange behaviour in Windows 7, I can't copy my file or folder if they are locked (some process is using them) how can I disable this feature?
It’s not a feature, it’s how the file-system works and is normal behavior.
You can use Unlocker. When you run it, it will display what processes have open handles to the file, and you can click the drop-down in the lower-left corner and select Copy. Then you can choose a location to copy the file to.
If you cannot install it either, then you won’t have the convenience of the sell-extension, but can still use the portable version from the command prompt. You’ll have to extract the files and run the EXE from a command-prompt as so: