If your Mouse and keyboard has stopped working than follow the solutions:
Solution 1:
Make sure the keyboard/mouse is firmly plugged into the back of the computer
Solution 2:
Try unplugging one or both, and then reinserting it into the back of the computer
Solution 3:
Try plugging your USB keyboard/mouse into a different USB socket
Solution 4:
Replace the keyboard/mouse with one that you know works
Solution 5:
If you cannot see any lights on your keyboard when you press the Caps Lock or Num Lock key, it may be a dead keyboard
Solution 6:
Make sure there is no dirt or fluff clogging up either the optical laser or roller ball on the underside of your mouse. It may require a clean
Solution 7:
If you are using a wireless keyboard/mouse, try pressing the reset button on the device or replacing the batteries.