A computer system that adjusts an internal temperature of a hard disk drive during HDD testing. In one aspect, a method for fabricating a photovoltaic device is provided. Also provided by the invention are tissue cultures of the cotton variety 468300G and the plants regenerated therefrom. The sidewall spacers align the source and drain extensions during the implanting process. Accordingly, the locus by a slide operation is depicted on the game screen as if the locus is reflected in a mirror. Accordingly, cost can be saved since the process is shortened, a film quality better than that of the existing dielectric layer structure can be obtained, and a film with improved step coverage can be formed.