Why computers can not be used to restore over the wheat?

Before the beginning is not easy to use friends to help me down a sound card the same thing, in the desktop lower right chart, point up like black squares! Now that the computer can be used after reduction seems not to sell, and selling is good! Will I have to install anything you?

Does not mean you have problems of wheat is re-installed on your system, may not have installed the drivers wheat, downloading a computer for your own drive to OK the wheat