One of the most common reasons your computer is experiencing an issue is it is not completely updated. Please see below for video's explaining how to update different devices.
Please note that for both types of devices you can perform an update any time. You can work while updating but when you restart the computer, it may take some time to finish and turn back on.
Also note that all computers will tell you when they need to be updated. Chrome will display a circle with an arrow in it. A windows computer will have a red or yellow dot. Those warnings will be at the bottom right of the screen.