Mouse – Not working 2 years ago BCCMIS 2 minutes Mouse – Manually Operated User Selection Equipment Step 1. Check connections. First go to the back of your computer and make sure that the connection of the mouse is connected at the USB or PS/2 port. Most common problem are causes is not connected or loose mouse cable. Go to Start -> then type in ” Device Manager ” and press enter After opening go to mice and pointer settings and right click update driver.