Nogbad the Bad,
"I have a friend who has an airplane, it has a problem when it is flying. The plane has a prop on it. What do you think is wrong?"
If you have trouble answering that question, you can imagine how much trouble we are having answering yours. Please give us some details on the specific hardware your computer has and which Operating System it is running along with which program you notice the problem on.
Take Care,
Richard