I am having trouble with windows 8 files are opening with single click when I have the double click option selected. How can I fix this? It is driving me crazy.
In Control Panel\Mouse\Buttons tab if your "Double-click speed" setting is set to "high" try moving the slider to a "medium" setting. It may be that your mouse button is "bouncing" a little and a single-click is being "seen" as a double-click. If your setting is already set to "medium" and the problem has just started then the mouse may have developed a fault so have you tried another mouse to see if it is a mouse issue?