在任务管理器中,只看到一个CPU核心,表明系统只标识一个核心,所以双核为单核; Most of these problems are operating system reasons and have no relation to overfrequency.The friend's system may be installed with the Ghost system disk, because the hardware configuration has changed, and this kind of problem will happen. 一般来说,只要重装系统可以解决,注意使用纯版本的系统安装光盘,逐步安装。不要使用Ghost系统磁盘,这个光盘系统是优化的,系统文件不完整,容易出现问题。