Most of us have had some pretty awful computers in our lives. However, I have found a foolproof* method of fixing this situation. Simply follow the steps below, and you will be on your way to a better place.
 
Step one: Place your terrible computer on a desk, table, or other level and sturdy object.  Make sure that the most fragile parts are facing upwards.
 
Step two: Take a few steps back, then proceed to dropkick your computer. Studies have shown** that computers learn lessons best when dropkicked. 
 
Step three: Go looking for a new computer at a store. Be sure to inquire into dropkick resistance, rate of dramatic explosions, and likelyhood of starting robot revolutions.
 
Step four: Purchase computer. Should said computer malfunction, repeat the process with increasingly interesting methods of destruction until you have obtained either a decent, stable computer, or one that is dropkick resistant.