Show the task pane in Windows Explorer
When you view the Disk Drives, Folders and Files on your computer using Windows Explorer, or My Computer, there is usually a panel of useful tasks displayed along the left-hand side of the window:

However, sometimes on some computers this left panel seems to get 'lost' (this could be due to changes made by installed software or changes you make yourself):

If you want to get these tools back, just do the following.
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Click Tools, Folder Options...

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In the window that appears make sure the General tab is selected

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Click the Show common tasks in folders option

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Click OK to apply the change and close the Folder Options window.