Step 1
There are several things, simple things, that you can do to help keep your computer running longer. When you are not working on your computer, simply turn it off. When computers are left on, they generate a lot of heat. This is not good for the computer. And, it saves electricity.

Step 2
Keep your computer clean. Use the special wipes that you can buy at any store in the computer section. When I go on vacation, to keep dust off of the computer, I will lay a towel on top of the screen and keyboards.

Step 3
Make sure that you defragment your computer often. If you do not already have it set to automatically run. This keeps the computer from using up too much unwanted space. Use the free disc space to clean up any drives that have been using too much space. If your computer has been running slowly, then this should help as well.