Open Windows Explorer > "Organize" > "Folder and search options" > View tab.
- In the Advanced Settings section, search for the "Use check boxes to select items" and check the corresponding box.
- As from now you don't have to use the CTRL key to select multiple item, simply hover the mouse cursor over a file and a check box shall be available for multiple select!
- From now on, when you hover your mouse over a file in Windows Explorer, a check box will appear next to it; click it to select the file. Once a file is selected, the checked box remains next to it; if you uncheck it, the box will disappear when you move your mouse away.