https://itmanual.net/%ec%b9%b4%ed%86%a1-pc-%ec%98%88%ec%95%bd-%ec%a0%84%ec%86%a1-%ec%b9%b4%ed%86%a1-%eb%ac%b8%ec%9e%90-%ec%98%88%ec%95%bd-%ec%a0%84%ec%86%a1/