MichealH,
This sounds like it could be one of a couple things, one, your have lost all the apps on your start screen, which could be a small-moderate problem, or two, your computer's internal components need to be dispelled. You can view the instructions on completing a dispel below.
How to preform a dispel to a laptop computer:
Step One: Turn off your computer.
Step Two: Unplug Your Computer.
Step Three: Close the lid, flip the computer over, and remove your battery.
Step Four: Without plugging your computer in or reinserting the battery, open the lid on your computer and hold the power button down for 15 seconds and release.
Step Five: Reinsert your battery, plug in your computer, and turn on.
If this does not help send us a message and we will do our best to help your or call your brands support team,
Windows 8