Here are the steps by which we can get the missing explorer folders in windows 7:
1. Click Start
2. Computer in Windows
7
You will see system folders like
Control Panel and the Recycle Bin are no longer displayed in the left pane
Final
and important step:
3. Click Tools
4. Folder Options
5. Check "Show
all folders"
6. Click OK and all
your top-level system folders will reappear.