You need to view and show the hidden files, folders and drives in order to do certain tweets and changing features etc in Windows. By default, they are hidden because deleting or damaging the system files can corrupt Windows. This is the method of showing and viewing hidden files in Windows 7.
- Open a Windows Explorer (you can open My computer)
- Go to Organize > Folders and search options
- In folder options, click View tab and select show hidden files, folder and drivers
- Click Apply to Folders if you want to show the hidden files and folders on entire computer
- Click OK and it is done
You have to do the same procedure to hide the system files and folders but check Don’t show hidden files, folders and drivers is step 3.