Mice on my computer won’t click

Hi there,
I have a Compaq Presario CQ3000 Series Desktop PC and Yesterday my mouse won't click but the cursor is moving well when the mouse is moved, the mouse clicks okay but the command is not executed on my computer, I borrowed my friend's wired mouse and the same problem persists, I have restarted the computer, reinstalled windows 8.1, updated mouse drivers but still stuck, what could be causing this problem and how can I solve it?
